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CM-ESS.MS 1SVR730830R0500

ABB CM‑ESS.MS 1SVR730830R0500 is a compact, single‑phase voltage monitoring relay designed to monitor AC or DC supply voltage and to detect over‑voltage or under‑voltage conditions. It is part of ABB’s “CM” series of single‑phase monitors. The device provides a 2 change‑over (SPDT) contact output that can be used to control alarms, contactors or protective circuits when the monitored voltage goes outside the pre‑set threshold.

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Technical Specifications Specification / Item Value / Description Product / Model CM‑ESS.MS single‑phase voltage monitoring relay Part Number 1SVR730830R0500 Function Over‑ or under‑voltage monitoring Rated Control / Supply Voltage (Us) 24 … 240 V AC or DC Measuring Range (Voltage) 3–30 V, 6–60 V, 30–300 V, 60–600 V AC/DC (selectable) Output Contacts 2 × change‑over (SPDT) Contact Ratings AC‑12: 250 V / 4 A; AC‑15: 230 V / 3 A; DC‑12: 24 V / 4 A; DC‑13: 24 V / 2 A Minimum Switching Capacity 24 V, 10 mA Trip / Delay Settings Start-up delay: 0 s (instant) Trip delay adjustable: 0.1 … 30 s or instantaneous Hysteresis / Threshold Adjustment Adjustable: 3 … 30% of threshold Terminal / Connection Type Screw terminals (double‑chamber cage‑connection) Mounting DIN‑rail (TH35) Insulation / Protection Measuring/output insulation: up to 600 V; Output: 250 V; Housing IP50; Terminals IP20; Pollution degree 3; Overvoltage category III Operating Temperature –20 °C … +60 °C Storage Temperature –40 °C … +85 °C Dimensions (W × H × D) 22.5 mm × 85.6 mm × 103.7 mm Net Weight ~0.154 kg Mechanical / Electrical Life Electrical: 100,000 cycles; Mechanical: 30,000,000 operations Wire Connection Capacity Flexible 0.5–2.5 mm²; Rigid 0.5–4 mm²; Torque 0.6–0.8 N·m Output Circuit Maximum Voltage 300 V AC