ABB 1SVR750487R8300 Industrial Safety Relay Module

ABB 1SVR750487R8300 is a CM-MPN.52S three-phase monitoring relay with two changeover contacts (2c/o). It monitors the presence and balance of a three-phase supply on L1, L2, L3 within 3x350–580 VAC and provides two changeover outputs to signal fault or healthy conditions in a control circuit. The timing function is adjustable from 0.0 to 30 s, with 0.1 s resolution, enabling a controlled response to phase loss or abnormal voltage conditions. This device is part of ABB’s 1SVR family of phase-monitoring relays and is intended for use in industrial safety circuits, motor protection, conveyors, and other automation applications where reliable phase monitoring is essential. The 1SVR750487R8300 designation identifies the CM-MPN.52S variant of ABB’s three-phase monitoring relay, a compact module designed for integration in standard control cabinets and safety interlock schemes.