The Siemens 3RH1131-1HB40 is a high-performance contactor relay from the SIRIUS 3RH series, designed for motor control and power switching in industrial automation. It combines compact design with high switching capacity, making it ideal for demanding applications in machinery, HVAC, and power distribution.
4. Special Features
Modular Design: Supports auxiliary contacts, timers, and interlocks
LED Status Indicator: Optional for visual feedback
Surge Suppression: Protects coil from voltage spikes
5. Standards & Certifications
IEC/EN 60947-4-1 (Contactors and motor starters)
UL 508 (Industrial control equipment)
CE, RoHS, cULus
Typical Applications
✔ Motor Control (Pumps, Fans, Compressors)
✔ Industrial Automation (PLC interfaces, control circuits)
✔ HVAC Systems
✔ Lighting Control
✔ Power Distribution Panels