TRINIDAD AND TOBAGO STANDARD  
 
 
 
 
 
ELECTRICAL ACCESSORIES AND COMPONENTS – COMPULSORY 
REQUIREMENTS  
 
 
 
 
 
PCTTCS  23:20XX 
 
 
 
 
 
 
 
 
 
 
 
 
 
Copyright ©  
This National Standard issued by the Trinidad and Tobago Bureau of Standards is copyright protected by the Stand ards Act  No. 
18 of 1997 and neither this document nor any extract from it may be reproduced, stored in a retrieval system or transmitted in 
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from the Trinidad and Tobago Bureau of Standards.  
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Trinidad and Tobago Bureau of Standards  
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Macoya, Tunapuna,  
P.O. Box 46 7, Port of Spain  
Trinidad and Tobago  
Phone: 662 -TTBS E -MAIL: ttbs@ttbs.org.tt  
 
Reproduction may be subject to royalty payments or a licensing agreement.  
              
 
 PCTTCS  23:20XX 
 ii Trinidad and Tobago Bureau of Standards (TTBS) disclaimer and exclusion of liability  
The information contained herein is provided without any representations, warranties or conditions of 
any kind, expressed or implied, including (but not limited to) implied warranties or conditions 
concerning the accuracy, reliability, completeness or curre ncy of the information.  
The Trinidad and Tobago Bureau of Standards (the Bureau) makes no representation and gives no 
warranties in relation to the information herein, its compliance with any relevant statue, rule, regulation, 
policy formulation, legal ins trument or notice whatsoever and where so ever derived nor whether the 
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Neither the  Bureau as a body corporate nor its members, employees, subsidiaries, affiliates or 
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 PCTTCS  23:20XX  
 iii General s tatement  
 
The Trinidad an d Tobago Bureau of Standards ( TTBS ) is a body corporate established under the 
authority of the Standards Act No. 18 of 1997 (herein after referred to as the Standards Act).  
In accordance with the Standards Act, the Bureau shall promote and encourage the de velopment and 
maintenance of standards and further shall establish standards for the following: to improve goods 
produced or used in Trinidad and Tobago; to ensure industrial efficiency and development; to promote 
public and industrial welfare, health and safety; and to protect the environment.  
TTBS  develops standards through consultation with relevant interest groups, and public comment is 
invited on all draft standards before they are declared as Trinidad and Tobago Standards in 
accordance with the provis ions of the Standards Act.  
TTBS  is the legal custodian of Trinidad and Tobago Standard Marks, which are issued in accordance 
with the Standards Act. When a Trinidad and Tobago Standard Mark appears on any product, or in 
connection with any service, process  or practice, it provides assurance that such a product, service, 
process or practice conforms to a Trinidad and Tobago Standard.  
TTBS’  Standards Information Centre maintains a reference library of standards, including local, 
regional and international sta ndards and is the national node of the International Organization for 
Standardization Information Network (ISONET).  The Centre serves as the WTO/TBT Enquiry Point 
which disseminates information on standards and technical regulations as it relates to the Wo rld 
Trade Organization, Technical Barriers to Trade Agreement. The Centre also acts as the sales agent 
for the publications of foreign and international standards organi sations.  
NOTE  In order to keep abreast of progress in the industries concerned, Trinida d and Tobago Standards are 
subject to periodic review. Suggestions for improvements are welcome.  
 PCTTCS  23:20XX 
 iv Contents   
  
Foreword  ................................ ................................ ................................ ................................ ..............................  1 
1 Scope  ................................ ................................ ................................ ................................ ......................  2 
2 Normative references  ................................ ................................ ................................ ..............................  2 
3 Terms and definitions  ................................ ................................ ................................ ..............................  3 
4 General requirements  ................................ ................................ ................................ .............................  6 
4.1 General labelling  ................................ ................................ ................................ ................................ ..... 6 
4.2 Caution markings  ................................ ................................ ................................ ................................ .... 7 
4.3 Presentation of information  ................................ ................................ ................................ .....................  8 
4.4 Packaging  ................................ ................................ ................................ ................................ ...............  8 
5 Specific requirements for electrical accessories and components  ................................ .........................  8 
6 Conflict with other na tional standards  ................................ ................................ ................................ ..... 8 
7 Mechanisms to demonstrate compliance  ................................ ................................ ................................  9 
7.1 New electrical accessories and components  ................................ ................................ ..........................  9 
7.2 Electrical accessories and components categorized othe r than new  ................................ .....................  9 
8 Measures related to non -compliance  ................................ ................................ ................................ .... 10 
Annex A  (normative)  Electrical accessories and components requirements  ................................ ...................  11 
 
 
 
 
 
 
 
 
 
 
 
 
 
 PCTTCS  23:20XX  
 1 Forewor d 
This specif ication was declared a Trinidad and Tobago Standard with effect from ….., after the draft , 
finaliz ed by the Advisory Committee  for Electrical Appliances , had been approved by the Bureau.  
This standard replaces specific compulsory standards covering a range  of electrical accessories and 
components including  but not limited to plugs and receptacles, switches, cord sets, power units, 
ground -fault circuit interrupters and circuit breakers.  
TTBS has recommended  that this standard be accorded compulsory status . This standard will 
become  effective as a compulsory standard on a date to be notified by the Minister responsible for 
trade and industry in a Notice to be published in the Trinidad and Tobago Gazette, as required by the 
Standards Act  (Chapter 82:03) to:  
a) protect the consumer or user against danger to health or safety;  
b) protect public or industrial health, welfare or safety;  
c) protect the environment;  
d) require adequate information to be given to the consumer or user; and  
e) prevent fraud or misrepresentation aris ing from misleading advertising or labelling.  
This standard is intended for use by:  
 
i. manufacturers, distributors, importers  and retailers of  electrical accessories and components to 
assist in manufacturing or procuring products which satisfy minimum requir ements and 
demonstrate compliance to this compulsory standard;  
ii. purchasers and users to assist in making informed decisions based on an understanding of the 
nature, quality or use of the electrical accessories and components; and 
iii. regulatory agencies  as a b asis for assessing electrical accessories and components within an 
established regulatory framework.  
 
The ma jor factor which prompted the development of this standard is the need to ensure that 
electrical accessories and components  meet the most recent ver sions of internationally accepted 
standards, including those developed by the International Electrotechnical Commission and 
Underwriters Laboratories Inc. Other foreign standards and certification marks may also be accepted 
by the Trinidad and Tobago Burea u of Standards.  
This standard covers  product safety requirements for electrical accessories and components by 
reference to international product standards and contains l abelling requirements for electrical 
accessories and components. Requirements for infor mation which should be on the packaging of 
electrical accessories and components  are also included. While this standard covers the general 
labelling requirements for electrical accessories and components , there may be additional labelling 
requirements for electrical accessories and components  in other specific product standards ; in such 
cases compliance with those additional requirements will be required.   
In developing this standard considerable assistance was derived from the following:  
a) Government of the Republic of Trinidad and Tobago. Electricity (Inspection) Act Chapter 54:72.  
b) Trinidad and Tobago Electricity Commission. Wiring for Light and Power (5th Edition)  PCTTCS  23:20XX  
 2 1 Scope  
This National Standard specifies safety requirements for all electrical accessories and  components  for 
use in Trinidad and Tobago.  It also specifies labelling information to be placed on the electrical 
accessories and components  as well as information to be placed on the packaging for such  
accessories and components . 
This standard  applies  to electrical accessories and components  intended for use at either of the 
following no minal supply  voltages:  
a) 115 volts , with a relative tolerance of ± 6 %; or  
b) 230 volts, with a relative tolerance of ± 6 %.  
NOTE  These nominal supply voltages have been decla red by the Trinidad and Tobago Electricity Commission 
(T&TEC) in their publication entitled “Wiring for Light and Power”. The Electricity Supply Rules made under 
Section 15 of the Electricity (Inspection) Act Chapter 54:72 provides for variations of six pe rcent above or below 
the declared voltages.  
This standard does not apply to accessories and components  designed exclusively for indus trial 
purposes or accessories  intended to be used in locations where special conditions prevail, e.g. the 
presence of a cor rosive or explosive atmosphere ( caused by dust, vapour or gas).  
This standard does not apply to electrical lighting  products or  electrical appliances.   
2 Normative references  
The following referenced documents are indispensable to the application of this standard . For dated 
references, only the edition cited applies. For undated references, the latest edition of the referenced 
document (including amendments) applies.  
International Electrotechnical Commission (IEC)  
IEC 60027, Letter symbols to be used in Electrical Technology  
International Organization for Standardization (ISO)  
ISO 7000/IEC 60417, Graphical symbo ls for use on equipmen t 
ISO 7010,  Registered safety signs  
Trinidad and Tobago Bureau of Standards  Website  
Full list of standards for electrical accessorie s and components  recognised by TTBS. Trinidad and 
Tobago Bureau of Standards. Available at www.gottbs.com/eaac -standardslist . PCTTCS  23:20XX  
 3 3 Terms and definitions  
For purposes of this National Standard, the following terms and definitions shall apply.  
3.1 
conformity assessment  
demonstration that specified requirements r elating to a pro duct, process,  system , person or body  are 
fulfilled  
 
Note 1 to entry:  ISO/IEC 17000 , Conformity assessment — Vocabulary and general principles . 
3.2 
country of origin  
a) country where the goods were wholly manufactured; or  
b) in cases where the composition and or  quality of the goods was changed to a significant extent 
elsewhere (other than by packaging), the last country where such significant change occurred  
Note 1 to entry:  A significant change in the product refers to where there is a change in the product tha t has 
resulted in a change of the Harmonized Commodity Description and Coding System (HS Code) as per World 
Trade Organization’s guidelines.  
3.3 
conspicuous  
clearly visible  
 
3.4 
distributor   
person or entity that supplies businesses with goods  
 
3.5 
durabl e 
able to withstand wear, pressure, or damage  
 
3.6 
electrical accessory  
item used in domestic and industrial electrical wiring   
 
3.7 
electrical appliance  
item of electrical or electronic equipment, normally built in standardi zed sizes or types, which is 
installed as a unit to perform one or more functions but does no t include electrical luminaries  or 
electrical components  
 
Note 1 to entry:  Examples of electrical appliances include  fans, vacuum cleaners, washing machines, 
water heaters, toast ers, blenders, microwave ovens,  electric cookers , refrigerators, vi deo equipment , audio 
equipment and computers.  PCTTCS  23:20XX  
 4 3.8 
electrical component  
self-contained element intended to store, generate, distribute, alter or consume electrical energy o r 
effect an electrical junction  
 
3.9 
e-waste  
electronic or electrical products which are disposed of or are intended to be disposed of or are 
required to be disposed of by the provisions of national law  
Note 1 to entry:   For the purposes of this document, electrical accessories and compon ents classified in 
Clause 4.1.2 (f)  are not considered to be e -waste . 
3.10 
indelible  
unerasable or unremovable  
 
3.11 
label  
any mark, symbol, imprint, stamp or brand placed on or permanently affixed to a product  
 
Note 1 to entry:  For the purpose of this s tandard tickets and tags are not considered to be labels, as these 
are not permanently placed . 
3.12 
legible   
written or printed matter that can be read without difficulty under the conditions in which the label is 
normally displayed to a use r 
 
3.13 
manufa cturer  
person or entity who produces, processes, prepares, packages or prepackages any goods for sale  
3.14 
model  
electrical accessory or component  that is assigned a unique name or number by the manufacturer to 
distinguish its design and functions from oth er products  
 
3.15 
rated frequency  
frequency assigned by the manufacturer expressed in hertz (Hz)  
 
3.16 
rated current  
root mean square (r.m.s) current assigned to the product  by the manufacturer expressed in amperes 
(A) 
 
3.17 
rated voltage  
root mean squa re (r.m.s) voltage assigned by the manufacturer expressed in volts (V)  
 
 PCTTCS  23:20XX  
 5  
3.18 
rated voltage range  
voltage range assigned by the manufacturer which is expressed by its lower and upper limits in root 
mean square (r.m.s.) values  
 
3.19 
rated power input  
power input assigned by the manufacturer expressed in watts (W)  
 
3.20 
rebuilt  
reconditioned  
refurbished  
remanufactured  
renewed  
goods  which have been overhauled, repaired, refitted, or have undergone a similar process to be 
made reusable  to meet applicable te chnical standards or regulatory requirements, with the result of  
making it a fully functional product to be used for a purpose that is at least the one for  which it was 
originally intended, including through such activities as cleaning and data  sanitizatio n. 
 
Note 1 to entry:   The product can be refurbished by the manufacturer, an authorised representative of 
the manufacturer or a third party authorised by the manufacturer.  
 
Note 2 to entry:   Common industry terms include certified refurbished (normally do ne by an authorised 
representative of the manufacturer or retailer), manufacturer or factory refurbished (normally done by the 
manufacturer).  
3.21 
second -hand goods  
used  goods  
goods or components/parts that have been in service (leased, loaned or owned) an d that are re -
entering a market for sale, lease or use by a second user or an end user  
 
Note 1 to entry:  For the purposes of this document, products that are rebuilt, refurbished or remanufactured 
are not c onsidered to be second -hand goods.  PCTTCS  23:20XX  
 6 4 General r equir ements   
4.1 General labelling  
4.1.1  All labelling shall be indelible, durable, legible and conspicuous . 
4.1.2  The following information shall be marked on, or permanently affixed to  electrical accessories 
and components : 
a) the name of the manufacturer, distribut or, importer or retailer responsible for the electrical 
accessory or component ; 
b) address, or the principal place of business or registered office of the manufacturer, distributor, 
importer o r retailer responsible for the electrical accessory or component  – Item a) and b) shall be 
preceded by the words “manufactured by ....”, “distri buted by ....”, “imported by .... ”, or any format 
that is acceptable to TTBS.  
NOTE  The list of acceptable formats for name and address is available at the TTBS's website and is u pdated 
as necessary.  
c) the country of  origin which shall be stated with the following words as appropriate or any fo rmat 
that is acceptable to TTBS : 
1) “made in (name of country)”;  
2) “product of (name of country)”;  
3) “produced in (name of country)”;  
4) “manufactured in (name of country)”; and  
5) “assembled in (name of country)”.  
NOTE   It is useful  that the contact information of the manufacturer, distributor, importer or retailer 
responsible for the electrical accessory or component  be on the label.  
EXAMPLE   Telephone nu mber, email address, website, QR code, social media handle etc.  
d) the model number or other indication of the model of the accessory or component ; 
e) serial number where applicable;  
NOTE  Serial numbers are usually found on electrical accessories and components  with timers (not including 
clocks), transformers, heating elements, and electronic components such as circuit boards.  
f) Where electrical a ccessories and components are categorized as follows, they shall be clearly 
and conspicuously labelled with the followi ng terms as appropriate:  
1) rebuilt, reconditioned, refurbished, remanufactured, or renewed; and  
2) second -hand or used.  PCTTCS  23:20XX  
 7 g) the nature of the  voltage supply to the accessories and components  as appropriate, unless the 
rated frequency is marked , as follows:  
1) a.c. or A.C. or the symbol 
 ; 
2) d.c. or D.C. or the symbol 
 ; or 
3) a.c./d.c. or A.C./D.C. or the symbol 
 . 
h) the rated voltage or rated voltage range;  
i) the rated current or the rated power input;  
j) a genuine certification mark or  genuine  safety certification mark; and  
k) a suitable hazard or caution warning.  
4.1.3 The rated voltage or voltage rang e specified in item h ) of Clause 4. 1.2 shall be either : 
a) 115 volts, with a relative tolerance of ± 6 %; or  
b) 230 volts, with a relative tolerance of ± 6 %.  
4.1.4  If an outlet (supplied  on or with the accessor y or component) is provided to power other 
accessories and components, the following shall be marked on the outlet or in close proximity to that 
outlet:  
a) the voltage;  
b) the rated current or the rated power; and  
c) the safety ground termin al if applicable.  
4.1.5 The rated frequency shall be marked, if applicable. The frequency shall be 60 Hz.  
4.2 Caution markings      
4.2.1   Caution markings intended to inform the user of a potential risk of injury to persons shall be 
in accordance with ISO 701 0, or any other standard recognised by TTBS, and prefixed by the signal 
word "CAUTION", "WARNING" or "DANGER". The signal word shall be prominent on the accessory 
or component . 
4.2.2   Where applicable, a caution marking intended to instruct a user shall be  legible and visible 
from the position which presents maximum exposure to risk.  
4.2.3   Where applicable, if the configuration of the accessory or component  is such that it presents 
danger to the user or service personnel then a label shall be placed in a s uitable area on the 
accessory or component  to indicate such danger.  
4.2.4   Where applicable, for servicing of the accessories and components , warning labels shall be 
located so as to be visible before or immediately upon removal of the protective shield of  the area to 
be serviced.  PCTTCS  23:20XX  
 8 4.3 Presentation of information  
4.3.1  Labelling information shall be clear and legible.  
4.3.2  All statements shall be presented , at a minimum, in  the English Language and English 
alphabet with or without accent signs. Where names and  addresses are in a foreign language, it shall 
not be necessary to translate such names and addresses into the English Language but they shall be 
stated in a form using the English alphabet.  
4.3.3  Letter  symbols, graphical symbols or numerical symbols ma y be used. If letter symbols are 
used, they shall be in accordance with IEC 60027. If graphical symbols are used, they shall be in 
accordance with ISO 7000/IEC 60417.  
4.4 Packaging  
4.4.1 The functionality of the electrical accessor y or component , brief product  description and the 
necessary conditions for operation shall be marked on the packaging of the electrical accessory or 
component . 
4.4.2 Any special handling instructions shall be placed on the packaging of the electrical accessory 
or component , in words o r symbols.  
EXAMPLE  “Place upright”, “Fragile”, “Do not use forklift”, “Use no hooks”.  
4.4.3 There shall be an indication on the packaging of the classification of the electrical a ccessory 
or component in accordance with 4.1.2 ( f). 
5 Specific requirements for  electrical accessories and components   
5.1  Electrical accessories and components  shall comply with a stan dard that is recognised by 
TTBS as outlined in Annex A and the TTBS webpage “Full list of standards for electrical accessories 
and components recogni sed by TTBS” available at www.gottbs.com/eaac -standardslist . This list is 
constantly updated to include new standards recognised by TTBS. In the event that the  electrical 
accessory or component  is no t covered in the full list available on the TTBS webpage 
www.gottbs.com/eaac -standardslist  these accessories and components shall be addressed on a case 
by case basis by TTBS. See C lause 7 .1.2. 
5.2  Electrical accessories and component s considered e-waste  under the Basel Convention and 
national legislation shall not enter into the local mar ket.  
6 Conflict with other national standards  
Whenever there is a conflict between the requirements of this standa rd and any other compulsory 
national standard(s) covering the same product(s) or categories of products, the standard(s) 
containing the more specific requirements shall take precedence.  PCTTCS  23:20XX  
 9 7 Mechanisms to demonstrate compliance   
7.1 New electrical accessories and components  
7.1.1 Locally manufactured and imported electrical accessories and components  shall comply with 
the requirem ents outlined in Clauses 4, 5 and 6 of this standard. TTBS shall verify compliance to this 
standard and electrical accessories and compon ents under the scope of this standard shall be subject 
to a mandatory conformity assessment programme administered by TTBS.  
EXAMPLE  Conformity assessment activities include inspection, testing, certification, verification and 
validation.   
7.1.2 TTBS may co nsider and accept information from other sources, such as third party testing, 
product certification and/or quality management system certification from an accredited body. If an 
accredited body is not available, the information can be provided by a body a pproved by TTBS, 
subject to the terms and conditions of TTBS in accordance with the latest version of the Standards 
Act (Chapter 82:03) , to provide objective evidence of compliance to the standard. The information 
may include test reports and other relevan t information. Provision of this information does not exempt 
TTBS from conducting any further conformity assessment activities deemed necessary to 
demonstrate compliance with the standard . 
NOTE  Pre-shipment approval can be sought from TTBS . 
7.1.3  Electric al accessories and components  shall be functionally compatible with TTS 171: Part 1, 
Trinidad and Tobago Electrical Wiring Code: Part 1: Low voltage installations. Documentation to 
demonstrate functional compatibility with TTS 171: Part 1 shall be provided  to TTBS.  
7.1.4 In the event the electrical accessory or component  has a product certification mark,  the 
certification mark shall be genuine. B oth the mark and the associated standard shall be submitted for 
approval by TTBS.  
7.1.5 Notwithstanding Clause 7 .1.2, the TTBS reserves the right to sample and test electrical 
accessories and components  for compliance  to this standard in accordance with the latest version of 
the Standards Act (Chapter 82:03). Sampling and testing shall be done at  the expense of the 
manufacturer, distributor, importer  or retailer of the electrical accessory or component, where deemed 
necessary by TTBS.  
NOTE  The sampling plan is at the discretion of TTBS in alignment with ISO 2859 -1, Sampling procedures 
for inspection by attributes - Part 1: Sampling schemes indexed by Acceptance Quality Limit (AQL) for lot -by-lot 
inspection.  
7.1.6  All documentation pertaining to this standard  shall be in the English language.  
 
7.2 Electrical accessories and components  categorized other than new  
7.2.1 For a ll electrical accessories and components  intended for use in Trinidad and Tobago, listed 
in Clause 4.1.2 (f)  the entire lot shall be evaluated/assessed  by the  TTBS at the expense of the 
manufacturer, distributor, importer or retailer of the electrical access ory or component . The 
evaluation /assessment may include inspection, testing, certification, verification and validation.  PCTTCS  23:20XX  
 10 7.2.2 Where necessary for these categories  of electrical accessories and components  to be subject 
to further sampling and testing, this  shall be done at the expense of the manufacturer, distributor, 
importer or retailer of the accessory or component .  
TTBS may consider documentation provided by the manufacturer, distributor, importer or retailer of 
the electrical accessory or component  that demonstrate compliance to C lauses 4, 5 and 6  of this 
standard.  
NOTE  Documentation includes test reports, inspection reports and conformity assessment reports.  
7.2.3 All electrical accessories and components  that are categorized as used or second -hand 
goods, and are imported, donated or offered for sale in Trinidad and Tobago, TTBS reserves the right 
to sample, inspect and test all goods on a hundred percent ( 100% ) basis for compliance to this 
standard at the expense of the local manufacturer, importer or  distributor (including wholesalers or 
retailers where applicable).  
 
7.2.4  All documentation pertaining to this standard  shall be in the English language.  
 
8 Measures related to non -compliance  
8.1 Where  electrical accessories and components under the scope of this standard are found to be 
in non -compliance of any of the requirements, TTBS shall initiate any of the following actions:  
a) direct the manufacturer, distributor, importer or retailer r esponsible for the electrical accessory or 
component  to remove non -conforming electrical accessories or components from use throughout 
Trinidad and Tobago within a specified timeframe;  
b) direct the seizure, detention and disposal of non-conforming electrical accessories and 
components within the legal  framework in accordanc e with the latest version of the Standards Act 
(Chapter 82:03);  
c) prohibit the sale and distributio n of non -compliant electrical accessories and components  in 
Trinidad and Tobago;  
d) permit modifications necessary for compliance, where possible; or  
e) any action p ermitted by the latest version of the Standards Act (Chapter 82:03).  
8.2 Any breaches to this standard are subject to fines and penalties in accordance with the latest 
version of th e Standards Act (Chapter 82:03).  
 PCTTCS  23:20XX  
 11 Annex A   
(normative)  
 
Electrical accessories and components requirements  
A.1 Standards for e lectrical  accessories and components  recognised by TTBS  
A full list of standards for electrical accessories and components recognised by TTBS is available  on 
the TTBS webpage at www.gottbs.com/eaac -standardslist . Table A.1 provides a non -exhaustive list of 
standards for electrical accessories and components recognised by TTBS.  
Table A.1 – Standards f or electrical accessories and components recognised by TTBS  
Type of electrical accessory 
or component  Specific standards  
Attachment plugs and receptacles  UL 498, Attach ment Plugs and Receptacles  
Circuit breakers  UL 489, Molded -Case Circuit Breakers, Mol ded-Case Switches and Circuit 
Breaker Enclosures (1st Revision)  
UL 1449, Surge protective devices (SPD)  
IEC 60947 -2, Low -voltage switchgear and controlgear  
IEC 61643 Series, Low -voltage surge protective devices  
Class 2 Power Units  UL 1310, Standard for Cl ass 2 Power Units  
Cord sets and power -supply cords  UL 817, Cord Sets and Power -Supply Cords  
 
IEC 60799, Electrical accessories - Cord sets and interconnection cord 
sets 
IEC 60884 -2-7, Plugs and socket -outlets for household and similar 
purposes - Part 2 -7: Particular requirements for cord extension sets  
General -use snap switches  UL 20, General -Use Snap Switches  
Ground -fault circuit -interrupters  UL 943, Ground -Fault Circuit -Interrupters  
Power taps  UL 1363, Standard for Relocatable Power Taps  
Power units other than Class 2  UL 1012, Standard for Power Units Other Than Class 2  PCTTCS  23:20XX  
 12 Table A .1 – Standards for electrical accessories and components recognised by TTBS 
(continued)  
Type of electrical accessory or 
component  Specific standards  
Uninterruptible power sys tems  UL 1778, Uninterruptible Power Systems  
 
IEC 62040 -1, Uninterruptible power systems (UPS) - Part 1: Safety 
requirements  
IEC 62040 -2, Uninterruptible power systems (UPS) - Part 2: 
Electromagnetic compatibility (EMC) requirements  
IEC 62040 -3, Uninterrupt ible power systems (UPS) - Part 3: Method of 
specifying the performance and test requirements  
IEC 62040 -4, Uninterruptible power systems (UPS) - Part 4: 
Environmental aspects - Requirements and reporting  
IEC 62040 -5-3, Uninterruptible power systems (UPS) - Part 5 -3: DC 
output UPS - Performance and test requirements  
NOTE       Table A.1 indicates the standards for electrical accessories and components  as of XX -06-2022 , which are 
recognis ed by TTBS . It is useful that user s of this standard consult the most r ecent list which is published on the TTBS’ website 
at www.gottbs.com/eaac -standardslist .