To make sure of correct installation, wiring, operation, maintenance, and inspection of theEB3C-N relay barrier, read this instruction manual, manual No. B-2270-1~8 for
intrinsically safe system, and for use in Japan, additional manual No. B-670 for the switch(intrinsically safe apparatus).
Make sure that this manual be kept at the last user of the EB3C-N relay barrier.

USA/FMEN 60079-11
Class 3610
ANSI/UL60079-11[Ex ia Ga] IIC[Ex ia Da] IIIC［Installation］

Operating Temperature-20 to +60C (no freezing)

Operating Humidity

45 to 85% RH (no condensation)

Atmosphere
Pollution Degree
Overvoltage category
Rated Power Voltage
UL certified
Rated Power Voltage
Power Consumption

800 to 1100 hPa
2II
100 to 240V AC, +10 or –15% , 24V DC 10%
100 to 120V AC, +10 or –15% 50/60Hz
24V DC±10%(Class2 power supply)
AC：(approx.)9.6VA (EB3C-R10AN at 200V AC)
DC：(approx.)4.8W (EB3C-R16CDN at 24V DC)
AC9.6 VA (EB3C-R10AN at 120V AC)
DC5.8W(EB3C-R16CDN at 26.4V DC)< Mounting Hole Layout (Screw mounting) >2-M4 or 2-φ4.5(All Dimensions in mm)4-M4 or 4-φ4.5

B-2270-4

B-2270-7
B-2270-5
B-2270-6
B-2270-8

PP

Housing Size A, B, C

Housing Size D< Mounting Hole Dimensions >※※Housing
Number of Circuits
SizePL(mm)

(mm)

A

128.0

42.0

B

2,35,6,
8 common8,10,16 common
connector 16

51.0

65.0

97.0

110.5

CD

97.0

171.5

< Outline Drawing >Power LED (Green)(All Dimensions in mm)
Operation LED (Yellow)

AC: 10A (100V AC), 20A (200V AC)
DC: 10A (24V DC)

Operation

EB3C-T16CSD-CN

FC6A-N16B3Terminal Output

Input TerminalTerminal Output

Input Terminal

20A1I02020A1I02019A9I101919A9I101918A2I11818A2I11817Power LED (Green)

Operation LED (Yellow)(All Dimensions in mm)

L17A10I111716A3I21616A3I21615

A11I121515A11I121514

A4I31414

A4I31413

A12I131313

A12I131312A5

I41212

A5I41211

A13

I141111A13

I141110A6I51010A6I5109A14I1599A14I1598A7I688A7I687A15I1677A15I1676A8I766A8I765A16I1755A16I1754C1(+V)

COM

44C1(-V)

COM

43NC

COM

33NC

COM

32C2(COM(-))

NC

22C2(COM(+))

NC

21NC

NC

11NC

NC

1Clamp(Note) A dotted line is not related to operation.
Applicable Connector ： XG4M-2030-T(OMRON)

Label Color
Intrinsically safe side:
Light blue
Non-intrinsically safe side:
GrayNote:
The power supply to the PLC input module is supplied from the relay
barrier, so there is no need to connect a separate power supply to the PLC
input module.

P3 N3Yellow

Yellow

Yellow

Green/~~~N

C1 A2 C2 A3

A1C3< Ex.1 AC power Relay Output>
P16 N1 N2

P1Yellow

Yellow

Green/＋ － A1 C1 A2 C2 A3 C3< Ex.2 DC power Transistor Output >－－~~~+ － A1

A16 C1 C2< Ex.3 Connector Type Sink output>［Output Circuit ］
Transistor Sink Output

Transistor Source Output＋LL

N

A1～An

Load

C1,C2
(C1～Cn)－＋(C1～Cn)
C1,C2N

A1～AnLoad－Relay Output＋C1,C2(C1～Cn)NA1～AnLoad－Connector Type Sink Output

Connector Type Source Output＋＋+V(C1)－

A1～A16COM(-)(C2)

COM(+)(C2)

A1～A16－

Load・Connector Type17Yellow

N2

Internal Circuit

Label Color
Intrinsically safe side:
Light blue
Non-intrinsically safe side:
Gray

I11

Yellow

P1 N1 P2

LoadClamp

A10

P3 N3－－

Internal Circuit

Input ON: Output ON (1:1)
Contact configuration:1NO (08C and 16C:8 circuits per common)
Relay Output
Ui = 250V AC, 125V DC, Ith = 3A (common terminal: 8A)
Minimum applicable load: 0.1V DC, 0.1mA(reference value)
125V AC 3A, 24VDC 3A(Res.)/125VAC 3A, 24VDC 2A(Ind.)UL certified
8A max.at common terminal
Relay Output
24V DC (30V max.), 100 mA, Voltage drop: 1.5Vmaximum(Ta:25℃)
Transistor Output<Connector type : 24V DC (30V max.), 15 mA > Class2
12V DC, 10mA
(n = number of lines per common)
Signal Input
Wiring allowable resistance: Rc = 600/(1+n) maximum
Between intrinsically safe circuit
Dielectric Strengthand non-intrinsically safe circuit : 1527V AC(1min,1mA)
Between AC power and output terminal: 1500V AC
Between DC power and transistor output terminal : 1000V AC※1
XG4A-2031(OMRON)
Connector type Barrior <ACCESSORY(mating connector): XG4M-2030-T(OMRON)>
Use connector
Note: If you use anything other than an accessory connector,
it will not be recognized as a UL certified product.
Terminal Style
M3 screw terminal
Wire Size
One wire : 0.5 to 2.1 mm2 (AWG20 to 14)(per one terminal)
Two wires : 0.5 to 1.5 mm2 (AWG20 to 16) (same size)
UL certified productOne wire : AWG16 to 14 (1.25 to 2.1 mm2)
voltage rating minimum 125V,temperature minimum 75 deg.C
Wire Size(per one terminal) Use Copper Conductors OnlyMounting
35mm-wide DIN rail or panel mounting (M4 screw)
Weight (approx.)0.39 kg (EB3C-R16CDN)※1 : Except for Conector type

FC6A-N16B3

N2－－－< Connectioith PLC (FC6A series)>
EB3C-T16CKD-CN

N1 P2

Yellow

Green/L［Wiring of Connector Type］

・Screw Terminal Type

P1

Internal Circuit

IEC60947-5-1
IP20

B-2270-3［Internal Circuit Block Diagram］

Internal Circuit

Standard for equipmentDegree of Protection

Use the EB3C-N relay barrier within the rated values of the specifications.
Do not use the damaged EB3C-N relay barrier, otherwise injury or fire may result.
Indoor use
When disposing of the EB3C-N relay barrier, do so as an industrial waste< Stripping the Wire End >1) Mounting
Solid wire
The EB3C-N relay barrier can be installed inany direction.
6~8mm
Install the EB3C-N relay barrier securely towithstand vibrations.
Stranded wire（ferrule）
When mounting the EB3C-N relay barrier onto
a DIN rail, make sure to press in the clamp
completely. Use the BNl6 mounting clips to6~8mm
prevent the EB3C-N relay barrier from movingsideways.
< Applicable Crimping Terminal >2) Terminal Wiring
φ3.2min.
Provide IP20 for wiring of the EB3C-N relay
barrier. Use shielded wires for bare crimping
terminals.
Using a ø5.5 mm or smaller screw driver,3max.
5.4min.
tighten the screw to a torque of 0.6 to 1.0Nm .
(All Dimensions in mm)3) Output(Non-intrinsically safe side)When required, provide a short-circuit protection externally.
Do not apply an expressively high voltage or reverse voltage, otherwise the transistor
output may be damaged.
4) Power voltage
Do not apply an expressive power, otherwise the EB3C-N relay barrier may bedamaged.
When connecting relay barriers in parallel, be sure to use the same power supply.
5）Power LED
The power LED lights up in green when normal. If the power LED is red, stop using thebarrier and replace it.
5) Extraneous Noise (EMC)
Induction of excessive noise may cause malfunction and damage to the EB3C-N relay
barrier.When the voltage limiting circuit (thyristor) inside the barrier operates due to noise,
all LEDs are turned off and the output is turned off. If the voltage limiting circuit operates,
it will not automatically recover, so take measures such as removing the noise source
after shutting off the power supply to the barrier. If the noise has been removed,
powering the barrier back on will restore normal operation.
6) Signal Input (Switches installed in hazardous areas)
Use switches which can open/close the input voltage and current. Switches other thannon-voltage/reed switches (for example, non-contact switches) cannot be used.
Both the switch contacts and wiring must have insulation performance of 500V or moreagainst grounding in hazardous areas.

Internal Circuit

UL913
Cl. I,II,III Division 1,UL60079-11
Groups A,B,C,D,E,F,G
CSA C22.2 No.157
CSA C22.2 No.60079-11 Cl. I, Zone0 [AEx ia Ga]IIC
GB/T3836.4
CHINA/Ex-CCC
KOREA/KCS
IEC 60079-11[Ex ia Ga] IIC
IEC 60079-11
TAIWAN/TS[Ex ia Da] IIIC
IEC 60079-11
NK
IEC 60079-11
KR※ : see No.B-2270-2 therefor Certificate Body not specified Manual.

Inrush Current

B-2270-1
B-2270-2

II(1)G[Ex ia Ga] IIC
II(1)D[Ex ia Da] IIICAIS Cl. I,II,III Division 1,Groups A,B,C,D,E,F,G
AIS Zone0,1[AEx ia Ga]IIC,IIB,IIA

USA,CAN/UL, c-UL

UL certified
Power Consumption

Manual No.

65

GLOBAL/IECEx
EUROPE/ATEX
UK/UKCA

Performance for Type ofProtection

Inattention might cause personal
injury or damage to equipment.

CAUTION

65JAPANSpecial expertise is required to install, wire, operate, maintain, and inspect the EB3C-N
relay barrier. People without such expertise and knowledge in the installation of electricalequipment used in potentially explosive atmospheres and electric systems, relevant
regulations, principle, function, and skill must not use the EB3C-N relay barrier.
Install the EB3C-N relay barrier in non-hazardous areas.
Make sure that the operating environment is in accordance with the specifications.

!

[Specifications]
Recommended Practices
for Explosion-ProtectedElectrical Installations inGeneral Industries
IEC 60079-11

Improper operation may cause severe
personal injury or death.

! WARNING

EB3C-N Relay Barrier(Contact signal Transducer)

Applicable Standard［Instructions］

Use the EB3C-N relay barrier only for the protection of electrical equipment used in
potentially explosive atmospheres. In this instruction manual, safety precautions arecategorized in order of importance to Warning and Caution.

INSTRUCTION SHEET

Certification Body

［Safety Precautions］

6max.

B-2269-2(0)-V(C1)

Please check the instruction manual including
other languages from the following URL.
URL ：https://product.idec.com/?product=EB3C-N

2022.12