ABB 1SVR750487R8300 Relay

ABB 1SVR750487R8300 is a CM-MPN.52S three-phase monitoring relay that detects phase failures, monitors phase sequence, and tracks over- and undervoltage conditions with phase unbalance detection. It provides configurable outputs—2 x 1 c/o or 1 x 2 c/o contacts—driven by a control supply voltage of 350–580 V AC (L-L) and a measuring range of 350–580 V AC on L1–L2–L3. The unit features a 200 ms startup delay and selectable tripping delays of 0 s or 0.1–30 s (ON or OFF), with operation from −25 to +60 °C (−40 to +85 °C storage) and RoHS compliance. Wiring uses screw terminals, with UL/CSA ratings up to 300 V AC for the output circuit and a UL/CSA contact rating of B300; it supports flexible conductors (1× 18–14 AWG or 2× 18–16 AWG) and rigid conductors (1× 20–12 AWG or 2× 20–14 AWG), tightened to 7.08 in‑lb. Physical dimensions are 45 mm wide, 85.6 mm high, and 104.8 mm deep, with a net weight of 0.23 kg. Standards cited include IEC/EN 60255-1 and EN 50178, and the product carries the EAN 4016779851916.