G9KB Series High Power PCB DC Relay

Omron's G9KB series supports high current applications with high capacity load ratings

Image of OMRON's G9KB Series High Power PCB DC Relay Omron's G9KB series SPST-NO relay supports high current applications with high capacity load ratings. The relay's high capacity characteristics make the G9KB ideal for energy storage systems, power conditioning, and electric vehicle charging applications. This product can switch up to 50 A at 600 VDC bidirectionally, eliminating the need for multiple switching components to alternate forward and reverse currents. The G9KB has been developed with high-performing arc cut-off technology to combat contact arcing typical with large DC power applications.

White Paper: 600 VDC 50 A High-power PCB relay G9KB Instruction of Product Performance and Reference Circuit

Features and Benefits
  • 50 A at 600 VDC (2,000 operations)
    • Capable of supporting high capacity DC loads
  • Holding voltage required is 45% to 60% of rated voltage
    • Reduces power consumption to 560 mW from 3.4 W when held at 45% of rated V
  • Bidirectional switching with arc cut-off
    • Eliminates the need for two relays in the case of DC forward/reverse currents
    • Swift extinguishing of arc provides a safer switching of high DC voltage loads
Applications
  • Energy storage systems
  • Power conditioner systems
  • V2H and EV charging
  • High voltage designs

Dimensions and PCB Layout

Image of OMRON's G9KB Series Dimensions and PCB Layout

G9KB Series High Power PCB DC Relay

ImageManufacturer Part NumberDescriptionCoil VoltageContact FormContact Rating (Current)Available QuantityPriceView Details
RELAY GEN PURPOSE SPST 50A 12VG9KB-1A DC12RELAY GEN PURPOSE SPST 50A 12V12VDCSPST-NO (1 Form A)50 A0 - Immediate$50.06View Details
RELAY GEN PURPOSE SPST 50A 24VG9KB-1A DC24RELAY GEN PURPOSE SPST 50A 24V24VDCSPST-NO (1 Form A)50 A0 - Immediate$50.06View Details
Published: 2022-05-13