G/TBT/N/GUY/29  
24 October 2019  
(19-7051) Page: 1/2 
Committee on Technical Barriers to Trade  Original:  English  
 
  
NOTIFICATION  
The following notification is being circulated in accordance with Article 10.6  
 
1. Notifying Member:  GUYANA   
If applicable, name of local government involved (Article 3.2 and 7.2):   
2. Agency responsible:   
Guyana National Bureau of Standards  
Flat 15, National Exhibition Complex  
Sophia, Greater Georgetown  
gnbs@networksgy.com  
+592 219 0062/0065/0071  
http://www.gnbsgy.org  
Name and address (including telepho ne and fax numbers , email and website 
addresses, if available) of agency or authority designated to handle comments 
regarding the notification shall be indicated if different from above:   
3. Notified under Article 2.9.2 [X], 2.10.1 [   ], 5.6.2 [   ], 5.7.1  [  ], other :  
4. Products covered (HS or CCCN where applicable, otherwise national tariff 
heading. ICS numbers may be provided in addition, where applicable):  1.1 The 
requirements of this standard cover molded -case circuit breakers, circuit breaker and 
ground -fault circuit -interrupters, fused circuit breakers, high -fault protectors, and high -
fault modules. This standard also covers instantaneous -trip circuit br eakers (circuit 
interrupters) specifically intended for use as part of a combination motor controller 1.2 
This standard covers molded -case switches and fused molded -case switches. 1.3 This 
standard covers devices rated at 1000 volts ac and 1500 volts dc or  less and 6000 
amperes or less. 1.4 The devices referenced in 1.1 and 1.2 are intended for installation 
in an overall enclosure or as parts of other devices such as panelboards. The acceptability 
of the combination will be determined when the complete prod uct is investigated. 1.5 This 
standard covers circuit -breaker enclosures and accessory devices intended for use with 
the devices described in 1.1 and 1.2. 1.7 This standard contains supplements covering 
the requirements for molded -case circuit breakers for : a) Marine Use; b) Naval Use; c) 
Uninterruptible Power Supply Use; d) Classified Circuit Breakers; e) Software in 
Programmable Components; f) Additional Tests for Circuit Breakers with Electronic 
Overcurrent Protection; g) Electromagnetic Compatibility (E MC) – Requirements and Test 
Methods for Circuit Breakers; and h) Molded -Case Circuit Breakers with Additional Motor 
Overload Protection.; -- Other (HS 853529)  
5. Title, number of pages and language(s) of the notified document:  Molded -Case 
Circuit Breakers, Molded -Case Switches and Circuit -Breaker Enclosures -GYS 525 (UL 489) 
(319 page(s), in English)  
6. Description of content:  Requirements for Molded -Case Circuit Breakers, Molded -Case 
Switches and Circuit -Breaker Enclosures inc luding requirements forconstruction, 
performance and markings.   G/TBT/N/GUY/29  
 
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  7. Objective and rationale, including the nature of urgent problems where 
applicable:  In recent times large quantities of faulty components has been entering the 
country. The risk of electro cution and fire is high. Hence the need to exclude components 
that do not meet the requirements of the standards.; Protection of human health or safety  
8. Relevant documents:   
Guyana National Bureau of Standards Act 11 of 1984 (Section 20 and 22) and Official 
Gazette -Guyana. UL 489 standard.   
9. Proposed date of adoption:  2 October 2019  
Proposed date of entry into force:  1 April 2020  
10. Final date for comments:  Document Adopted.  
11. Texts available from:  National enquiry point [X] or address, telephone and fax 
numbers and email and website addresses, if available , of other body: