Omron G3PA Series Solid State Relay, 45 A Load, DIN Rail Mount, 528 V Load, 24V Control

Omron G3PA Series Solid State Relay, 45A Load Current, 528V Load Voltage - G3PE-545B 12-24VDC

This solid-state relay provides electrically isolated switching for AC loads in industrial automation and control systems. Designed for DIN-rail fitting, it accepts a low-voltage DC control signal and performs zero-cross switching to drive high-voltage AC loads while keeping electrical control circuits separate from load circuits.

Features and Benefits:

• Accepts 12–24V DC control for flexible input compatibility
  Switches up to 45A to support high-current applications
  Operates across 180–528V AC load range for broad voltage coverage
  Zero-cross switching reduces inrush and electrical noise
  Rated for operation between -30°C and 80°C for varied environments
  Screw-terminal connections ensure secure wiring under vibration

Applications

• Suitable for heater control switching in process systems
  Ideal for industrial motor pre-heating circuits
  Used with three-phase distribution timing and sequencing panels
  Can be used for switching resistive and inductive AC loads in automation racks

What Terminal arrangement does it use for wiring?

It uses screw-type terminals, providing firm clamped connections for control and load conductors.

How is the device mounted in control cabinets?

It is designed for DIN-rail mounting to integrate neatly into standard enclosure rail systems.

What switching behaviour should be expected at turn-on?

The relay performs zero-cross switching, so it closes when the AC waveform crosses zero volts to limit transient current.

Which protection rating applies to the enclosure?

The unit carries an IP20 rating, indicating protection against contact with hazardous parts but not against water ingress.