Technical Specifications Parameter / Item Value / Description Product Type / Function Three‑phase monitoring relay (phase sequence + phase‑failure + over/under‑voltage detection) Model / Part Number 1SVR730794R3300 (CM‑PVS.41S) Monitored Voltage (L–L) 300 … 500 V AC, 50/60 Hz Supply / Control Voltage Same as monitored three-phase supply (300–500 V AC) Measured Phase Types 3-phase (L1‑L2‑L3) Output Contacts 2 × change-over (2 c/o, DPDT / SPDT pairs) Contact Rating 250 V AC / 4 A (AC‑12 general load) 3 A @ 230 V AC (AC‑15 inductive / motor‑control load) Also compliant with UL/CSA B300 contact rating, output circuit max 300 V AC Functions Monitored Phase failure (phase loss), phase sequence (phase order), overvoltage / undervoltage, adjustable phase‑unbalance threshold Time Settings / Delay Options 200 ms start‑up delay after power application; selectable trip delay: immediate (0 s) or adjustable 0.1 – 30 s; ON or OFF delay selectable Connection Terminals Screw terminals (double‑chamber cage terminal / spring clamp) suitable for flexible or rigid conductors Mounting DIN‑rail (e.g. TH‑35) mount Operating Ambient Temperature –25 °C … +60 °C Storage Temperature –40 °C … +85 °C Dimensions (W × H × D) 22.5 mm × 85.6 mm × 103.7 mm Net Weight ~ 0.139 kg Standards / Approvals IEC/EN for phase monitoring relays; UL/CSA output contact rating B300; RoHS compliant Additional Features Adjustable undervoltage/overvoltage thresholds, adjustable trip delay, LED (or status indication) (depending on variant), transparent/sealable cover option to prevent unauthorized adjustment