Omron G3PJ-525B DC12-24 – Slim Single-Phase Solid State Relay for Heaters, 25 A, 100–480 V AC
The Omron G3PJ-525B DC12-24 is a single-phase solid state relay (SSR) with integrated heat sink from Omron’s G3PJ series, designed for heater control. It switches loads up to 25 A at 100–480 V AC, controlled by a 12–24 V DC signal, for example from a temperature controller’s voltage output.
The G3PJ’s main advantage is its low heat generation in a slim 22.5 mm housing. It can carry 25 A even when three SSRs are mounted side by side, which helps reduce control panel size and cooling requirements. Being solid state, it has no moving contacts to wear out, making it ideal for the frequent switching needed in heater control. Zero-cross switching reduces electrical noise, and the orange LED shows the input status at a glance.
Key Technical Data – Omron G3PJ-525B DC12-24
- Product type: Solid state relay with heat sink, single-phase
- Series: Omron G3PJ
- Rated load voltage: 100–480 V AC, 50/60 Hz
- Load voltage range: 75–528 V AC
- Rated load current (at 40 °C): 25 A close mounting of 3 SSRs; 27 A separate mounting
- Input voltage: 12–24 V DC (operating range 9.6–30 V DC)
- Input current: 7 mA max.
- Switching: Zero-cross function
- Inrush current resistance: 220 A (60 Hz, 1 cycle)
- Output ON voltage drop: 1.8 V (RMS) max.
- Leakage current: 20 mA max. at 480 V AC
- Indicator: Orange LED
- Terminals: Screw terminals, input and output
- Mounting: DIN rail or screw mounting
- Dimensions: 22.5 × 100 × 100 mm
- Operating temperature: –30 to +80 °C (with derating)
- SCCR (UL508): 10 kA
- Approvals: cULus, TÜV, CE (EN 60947-4-3)
- Weight: approx. 240 g
Choosing the Right G3PJ Version
- G3PJ-525B DC12-24: 25 A, 480 V AC, screw input terminals (this item)
- G3PJ-525B-PU DC12-24: same, with push-in input terminals
- G3PJ-225B DC12-24: 25 A version for 240 V AC loads
- G3PJ-515B DC12-24: 15 A version for 480 V AC loads
The usable load current depends on ambient temperature and mounting. Our sales team can help you choose the right rating.
Typical Applications
- Heater control on plastics machinery, extruders and moulding machines
- Ovens, furnaces and packaging sealing bars
- Switching stage for temperature controllers with voltage output
- Replacing mechanical contactors in frequently switched heating circuits
Buy Omron G3PJ-525B DC12-24 from Atlantech Drives
- In stock or fast sourcing, shipped worldwide
- 12-month warranty
- Senior commercial advice on SSR ratings and lead time
- Quick, no-obligation quotes: get a quote today
