{"product_id":"abb-1svr740831r0400-rms-monitoring-relay-2-pole","title":"ABB 1svr740831r0400 RMS Monitoring Relay 2-Pole","description":"\u003cdiv\u003e\u003cp\u003eABB 1SVR740831R0400 CM-ESS.2P Voltage monitoring relay provides RMS-based supervision for DC and AC voltages in a compact single‑phase package, featuring two changeover contacts (2c\/o) that can drive alarms or interlocks in control circuits. It monitors the voltage across B–C in the range of 3 to 600 VRMS and is powered from 110–130 V AC, making it compatible with standard 1‑phase mains. The device uses an RMS measuring principle and offers four measurement ranges for threshold selection: 3–30 V, 6–60 V, 30–300 V, and 60–600 VRMS. The two isolated SPDT outputs are rated to 250 V and 4 A, enabling reliable signaling or interlock control in automation, machine protection, and process control applications. This ABB CM-ESS.2P part belongs to ABB’s ERC2 family of voltage-monitor relays, with the 0400 suffix indicating operation on 110–130 V AC. \u003c\/p\u003e\u003c\/div\u003e","brand":"ABB","offers":[{"title":"New","offer_id":51656912404782,"sku":null,"price":474.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_218d4cef-469a-45e9-b16d-c2370904e9ed.jpg?v=1769464374","url":"https:\/\/plgautomation.com\/products\/abb-1svr740831r0400-rms-monitoring-relay-2-pole","provider":"PLG Automation ","version":"1.0","type":"link"}