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 and G9KB-E series SPST-NO relays support high current applications with high capacity load ratings. The relay's high capacity characteristics make the G9KB and G9KB-E relays ideal for energy storage systems, power conditioning, and electric vehicle charging applications. This product can switch up to 100 A at 600 VDC or 50 A at 800 VDC bidirectionally, eliminating the need for multiple switching components to alternate forward and reverse currents. The G9KB family 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

G9KB - 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
G9KB-E - Features and Benefits
  • 100 A at 600 VDC (100 operations) UL certified
    • Capable of supporting high capacity DC loads
  • 50 A at 800 VDC (10 operations) UL certified
    • Useful UL certifications for EV chargers and energy storage applications
Applications
  • Energy storage systems
  • Power conditioner systems
  • EV chargers
  • V2H and V2X chargers
  • 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 A76 - Immediate$354.80View Details
RELAY GEN PURPOSE SPST 50A 24VG9KB-1A DC24RELAY GEN PURPOSE SPST 50A 24V24VDCSPST-NO (1 Form A)50 A12 - Immediate$320.72View Details
RELAY GEN PURPOSE SPST 100A 24VG9KB-1A-E DC24RELAY GEN PURPOSE SPST 100A 24V24VDCSPST-NO (1 Form A)100 A44 - Immediate$446.01View Details
RELAY GEN PURPOSE SPST 100A 12VG9KB-1A-E DC12RELAY GEN PURPOSE SPST 100A 12V12VDCSPST-NO (1 Form A)100 A100 - Immediate
72 - Factory Stock
$426.25View Details
Published: 2022-05-13