Name: Omron G3PJ-225B-PU DC12-24 Single-Phase Solid State Relay - INOSAKI
SKU: Omron-G3PJ-225B-PU DC12-24
Price: 80.51 USD
Availability: InStock

Technical Overview

The Omron G3PJ-225B-PU DC12-24 is a premium single-phase solid-state relay (SSR) engineered for heater control and high-frequency industrial switching applications. It features an integrated heat sink, zero-crossing function to minimize electrical noise, and innovative Push-In Plus input terminals to streamline panel wiring and reduce installation time. Operating with a 12-24 VDC control voltage, this SSR reliably switches AC loads up to 25A within a 24-240 VAC range. Its compact 22.5mm slim profile allows for close side-by-side mounting on standard DIN rails, contributing to significant control panel downsizing while maintaining exceptionally low heat generation.

Key Features

Single-phase solid-state relay optimized for industrial heater control [1.1]
Integrated heat sink designed for low heat generation and high reliability
Push-In Plus input terminal blocks for fast, tool-less, and vibration-resistant wiring
Built-in zero-cross function minimizes surge currents and electrical noise
25A rated load current with capability for close-mounting multiple SSRs side-by-side
Slim 22.5mm width design saves valuable DIN rail space in control panels
Orange LED operating indicator for clear, at-a-glance status monitoring

Technical Specification Matrix

Parameter	Value
Control Voltage (Input)	12 to 24 VDC (9.6 to 30 VDC allowable)
Load Voltage (Output)	24 to 240 VAC (19 to 264 VAC allowable)
Maximum Load Current	25 A
Phase	Single Phase
Switching Type	Zero Crossing
Terminal Type	Push-In Plus Terminal Block (Input) / Quick Connect
Mounting Type	DIN Rail
Operating Indicator	Orange LED
Dimensions	22.5 mm x 100 mm x 100 mm
Operating Humidity	45% to 85% RH

Industrial Applications

1. Industrial Packaging Sealing Heater Control

In continuous flow packaging machines, precise and rapid temperature control is required for thermal sealing jaws to maintain seal integrity without burning the material. The G3PJ SSR provides rapid, reliable, and wear-free ON/OFF cycles necessary for PID temperature control loops.

Problem Solved

Mechanical relays wear out quickly under the high-frequency switching required by PID controllers. The solid-state design eliminates mechanical fatigue, and the zero-cross function suppresses electrical noise that could disrupt nearby sensitive PLCs or sensors.

Packaging machineryThermal sealing jawHigh-frequency switchingZero-cross functionSolid-state relayPID temperature control

2. Plastic Injection Molding Barrel Heating

Extruder barrels in injection molding machines require tightly controlled multi-zone heating to melt plastic resin uniformly. Multiple G3PJ-225B-PU relays can be mounted side-by-side on a single DIN rail to control individual heater bands across the barrel zones.

Problem Solved

Space constraints inside molding control cabinets often lead to overheating when standard SSRs are mounted closely. The 22.5mm slim design and specialized integrated heat sink of the G3PJ allow for close side-by-side mounting without significantly derating the 25A load capacity.

Injection moldingExtruder barrel heatingMulti-zone temperature controlClose-mountingIntegrated heat sinkDIN rail optimization

3. Commercial Industrial Baking Ovens

Large-scale commercial baking ovens rely on robust electric heating elements that require proportional or rapid duty-cycle control to maintain exact baking temperatures across varying ambient conditions.

Problem Solved

Standard screw terminals often loosen over time due to thermal expansion and industrial vibration inside standard control boxes. The Push-In Plus terminal blocks provide a secure, vibration-proof connection for the 12-24 VDC control signal, heavily reducing maintenance needs.

Industrial baking ovenElectric heating elementDuty-cycle controlPush-In Plus terminalVibration resistanceHeater control