Siemens 3RB31234PB0 1-4 Amp Solid State Overload Relay

Siemens 3RB31234PB0 1-4Amp Overload Relay

A solid-state electronic overload relay used to protect small motors. Designed for currents between 1‑4 A, it offers both manual and automatic reset, phase failure/unbalance protection, and mounts directly to a Siemens S0 contactor.

Key Specs

Current Range: 1 - 4 A

Contact Form: 1 NO + 1 NC auxiliary contact 

Power Rating: ~ 0.37 to 1.5 kW (at 400 VAC, 3-phase)

Mounting / Size: S0 frame, screw terminals, suitable for contactor mounting