REM601AE446BB1BH
Distributeur OfficielBy ABB
Protection Relay for Distribution Network, 24-265VAC. It is a compact, high-performance numerical relay intended for modern distribution networks. It supports a wide universal supply range of 24–265 V AC or DC and delivers a full suite of protection functions including overcurrent, earth‑fault, negative‑sequence, and thermal overload, enhanced by inrush and cold‑start stabilization. The unit also offers versatile digital I/O, programmable logic, and protocol options (Modbus RTU / IEC 60870‑5‑103, with IEC 61850 or DNP3 in selected variants). With preconfigured settings, USB data export, and selectable sensor interface (CT or Rogowski coil), REF601 simplifies commissioning and maintenance. Coil options include Rogowski for compact MV installations, while safety features like terminal shorting and self‑supervision boost reliability. Overall, this makes REM601AE446BB1BH a flexible, robust, and easy‑to‑deploy solution for feeder protection in utility and industrial distribution applications.
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The CM-MSS.21S belongs to the CM-MSS thermistor motor protection relay range. It operates with a rated control supply voltage of 24 - 240 V AC / DC and has a 1 n/c + 1 n/o (SPDT) output with contacts rated at 250 V / 4 A. It features one sensor circuit to monitor PTC temperature sensors and works according to the closed-circuit principle. The sensor circuit of the CM-MSS.21S is short-circuit, as well as interrupted-wire monitored and the relay will be reset automatically after the failure has been removed. This protection relay is certified according to the ATEX directive 94/9/EC. A sealable transparent cover for protection against unauthorized changes is available as accessory. The device offers screw connection technology with double-chamber cage connection terminals.