Back to Omron

Omron Electronics G9KJ PCB High-Power Relays

Omron Electronics G9KJ PCB High-Power Relays are compact PCB relays optimized for precharge circuits in 1500VDC systems. The Omron G9KJ offers a significant reduction in size and weight compared to conventional screw-type relays. The PCB terminals eliminate the need to fasten the relay with screws, enabling significant reductions in wiring work and space. These high-power relays feature 530mW coil consumption and are ideal for use in energy storage systems, electric vehicle (EV) charging stations, and vehicle-to-everything (V2X) applications, including vehicle-to-home (V2H) and vehicle-to-building (V2B).

Features

  • Compact 37.2mm length x 17mm width x 25.5mm height relay
  • Optimized for precharge for use in 1500VDC systems
  • Up to 25A making current for precharge circuits
  • 14mm minimum clearance and 25mm minimum creepage between coil and contacts
  • 530mW high-sensitivity coil consumption

Applications

  • Energy storage systems
  • V2X (V2H and V2B)
  • EV charging stations

Specifications

  • Maximum switching current
    • 25A making
    • 5A breaking
  • Maximum switching voltage
    • 1500VDC making
    • 40VDC breaking
  • 12VDC or 24VDC rated coil voltage
  • 100mΩ maximum contact resistance
  • 500,000 operations minimum mechanical durability

Additional Resources

Dimensions & PCB Layout

Mechanical Drawing - Omron Electronics G9KJ PCB High-Power Relays

DC Capacitor Precharge Circuit

Application Circuit Diagram - Omron Electronics G9KJ PCB High-Power Relays
Published: 2026-01-19 | Updated: 2026-01-20