Siemens 3RB31234SB0 3-12A Solid State Overload Relay

Siemens 3RB31234SB0 Overload Relay

A solid‑state overload relay designed to protect 3‑phase motors from overloads, phase imbalance, or phase failure. Fits directly on a Siemens S0 contactor. Includes both manual and automatic reset options and has one normally open + one normally closed auxiliary contact.

Key Specs

• Current Setting: 3 ‑ 12 A

• Poles: 3

• Auxiliary Contacts: 1 NO + 1 NC

• Protection Types: Overload, phase unbalance, phase failure

• Mounting: Contactor mounting, screw terminals Enclosure Rating: IP20

• Operating Temp: −25°C to +60°C

• Dimensions: ~ 87 mm × 45 mm × 84 mm (H × W × D)