The Omron G7J-4A-B-W1-AC100/120 is an enclosed power relay from the G7J Series, built for switching motor and resistive loads in control panels where a bracket-mounted, screw-terminal form factor is specified. It carries a 25 A continuous rating on the normally-open contacts, with contact ratings of 25 A at 240V AC and 25 A at 30V DC for the NO poles, and 8 A at those voltages for the NC poles. The 100/120V AC coil is rated for 50/60 Hz operation.
The 4PST-NO contact arrangement (four independent normally-open poles) suits applications where multiple load circuits must be switched simultaneously from a single coil, such as engaging a motor and its auxiliary circuits. The enclosed sealing protects the contacts from dust and physical contact, making it suitable for panel environments where contamination is a concern. Bracket mounting allows installation on a panel backplate or chassis, with screw terminals accepting solid or stranded wire for field wiring.
The manual push-to-test button allows panel builders to verify contact operation without energizing the coil, useful during commissioning or fault isolation. Electrical durability is rated at 100,000 operations, mechanical durability at 1,000,000 operations, giving a realistic service life for moderate-duty cycling.