Key Technical Parameters General & Monitoring Product / Model: ABB CM‑PVS.41S Three‑Phase Monitoring Relay Part Number: 1SVR730794R3300 Function: Monitors three‑phase supply for overvoltage, undervoltage, phase failure, and phase sequence faults Supply / Measuring Voltage: 300 V to 500 V AC between phases (L‑L) Measuring Frequency: 50 Hz / 60 Hz Output & Contacts Output Type: 2 change‑over (SPDT) contacts Contact Ratings: Up to 250 V AC at 4 A (typical control load) Timing Startup Delay: ~200 ms Tripping Delay: Adjustable from instantaneous to 30 s Connection & Installation Mounting: DIN‑rail (standard TH35) Terminal Type: Screw terminals with double‑chamber cage connection Environmental Operating Ambient Temperature: –25 °C to +60 °C Storage Temperature: –40 °C to +85 °C Degree of Protection: IP20 on terminals and housing Physical Width: ~22.5 mm Height: ~85.6 mm Depth: ~103.7 mm Weight: ~0.139 kg Typical Applications Phase sequence and phase loss detection for motor protection systems Over/undervoltage monitoring to protect equipment from abnormal supply conditions Industrial control panels used in automation and machine control Signal/alarm interfacing for PLCs or safety circuits upon fault detection