G3B / G3BD

Category Tag

• Shape-compatible with mechanical relays.

• Certified by UL, CSA, and VDE (models numbers with a suffix of “-VD”).

• Plug-in type, same size as MK Power Relays.

• Operation indicator provided to confirm input.

• DC Output model available with 3 to 125-VDC load voltage range for high-voltage applications.

Ratings (at an Ambient Temperature of 25°C)



Model Rated voltage Operating voltage Input current Voltage levels
Must operate
Must release
G3B-205S-VD 5 to 24 VDC 4 to 30 VDC 15 mA max.
(See note.)
4 VDC max. 1 VDC min.
G3BD-103S-VD 1.5 kΩ+20%/-10%



Note: 1. The input impedance is given for the maximum operating voltage. For details, refer to the Technical Guide for
Solid State Relays.
2. Constant-current input circuit.




Model Applicable load
Rated load voltage Load voltage range Load current Inrush current
G3B-205S-VD 100 to 240 VAC 75 to 264 VAC 0.1 to 5 A at 40 ° C 80 A, 60 Hz for 1 cycle
G3BD-103S-VD 5 to 110 VDC 3 to 125 VDC 0.1 to 3 A at 40 ° C 12 A (10 ms)



Note: The load current depends on the ambient temperature. Refer to Load Current vs. Ambient Temperature under
Engineering Data for details.




Model G3B-205S-VD G3BD-103S-VD
Operate time 1/2 cycle of load power source + 1 ms max. 0.5 ms max.
Release time 1/2 cycle of load power source + 1 ms max. 2.5 ms max.
Output ON voltage drop 1.6 V (RMS) max. 1.5 V max.
Leakage current 5 mA max. (at 100 VAC); 10 mA max. (at 200 VAC) 5 mA max. (at 125 VDC)
Insulation resistance 100 MΩ min. (at 500 VDC)
Dielectric strength 2,000 VAC, 50/60 Hz for 1 min 1,500 VAC, 50/60 Hz for 1 min
Vibration resistance Destruction: 10 to 55 to 10 Hz, 0.75-mm single amplitude
Shock resistance 1,000 m/s2
Ambient temperature Operating: -30°C to 80°C (with no icing or condensation)
Storage: -30°C to 100°C (with no icing or condensation)
Ambient humidity 45% to 85%
Certified standards UL (File No.E64562), CSA (File No.LR35535)
VDE (Certificate No.40000157, EN60947-4-3 (G3B-VD)
No.40046587, EN62314 (G3BD-VD))
EMC Emission: EN55011 Group 1 Class B
Immunity: EN61000-6-2
Weight Approx. 70 g