{"product_id":"abb-cm-ess-2s-1svr730831r0400-single-phase-voltage-monitoring-relay","title":"ABB – CM-ESS.2S (1SVR730831R0400) – Single-Phase Voltage Monitoring Relay","description":"\u003cdiv\u003eThe ABB CM-ESS.S (SVRR) is a single-phase voltage monitoring relay designed for reliable overvoltage and undervoltage protection in industrial and commercial electrical systems. Operating with a rated control supply voltage of – V AC, this relay features two changeover (SPDT) contacts rated at  V \/  A for flexible integration into control circuits.\u003c\/div\u003e\u003cdiv\u003eThe device supports four selectable measuring ranges (– V, – V, – V, – V) using a true RMS measuring principle, ensuring precise monitoring of both AC and DC voltages. The relay is configurable for either overvoltage or undervoltage detection, with an adjustable hysteresis (–% of the threshold value) and a tripping delay that can be set from instantaneous up to  seconds. It is equipped with screw terminals and fits standard DIN rail mounting, making installation straightforward in control panels.\u003c\/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\u003cdiv\u003eKey Features:\u003c\/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\u003cdiv\u003e\n\u003cspan class=\"Apple-tab-span\" style=\"white-space:pre\"\u003e\t\u003c\/span\u003e•\u003cspan class=\"Apple-tab-span\" style=\"white-space:pre\"\u003e\t\u003c\/span\u003eControl supply voltage: – V AC\u003c\/div\u003e\u003cdiv\u003e\n\u003cspan class=\"Apple-tab-span\" style=\"white-space:pre\"\u003e\t\u003c\/span\u003e•\u003cspan class=\"Apple-tab-span\" style=\"white-space:pre\"\u003e\t\u003c\/span\u003eMeasuring ranges: – V, – V, – V, – V (AC\/DC, true RMS)\u003c\/div\u003e\u003cdiv\u003e\n\u003cspan class=\"Apple-tab-span\" style=\"white-space:pre\"\u003e\t\u003c\/span\u003e•\u003cspan class=\"Apple-tab-span\" style=\"white-space:pre\"\u003e\t\u003c\/span\u003eOutput:  x SPDT (changeover) contacts,  V \/  A\u003c\/div\u003e\u003cdiv\u003e\n\u003cspan class=\"Apple-tab-span\" style=\"white-space:pre\"\u003e\t\u003c\/span\u003e•\u003cspan class=\"Apple-tab-span\" style=\"white-space:pre\"\u003e\t\u003c\/span\u003eConfigurable for overvoltage or undervoltage monitoring\u003c\/div\u003e\u003cdiv\u003e\n\u003cspan class=\"Apple-tab-span\" style=\"white-space:pre\"\u003e\t\u003c\/span\u003e•\u003cspan class=\"Apple-tab-span\" style=\"white-space:pre\"\u003e\t\u003c\/span\u003eAdjustable hysteresis: –% of threshold\u003c\/div\u003e\u003cdiv\u003e\n\u003cspan class=\"Apple-tab-span\" style=\"white-space:pre\"\u003e\t\u003c\/span\u003e•\u003cspan class=\"Apple-tab-span\" style=\"white-space:pre\"\u003e\t\u003c\/span\u003eAdjustable tripping delay:  s (instantaneous) or .– s\u003c\/div\u003e\u003cdiv\u003e\n\u003cspan class=\"Apple-tab-span\" style=\"white-space:pre\"\u003e\t\u003c\/span\u003e•\u003cspan class=\"Apple-tab-span\" style=\"white-space:pre\"\u003e\t\u003c\/span\u003eScrew terminal connections\u003c\/div\u003e\u003cdiv\u003e\n\u003cspan class=\"Apple-tab-span\" style=\"white-space:pre\"\u003e\t\u003c\/span\u003e•\u003cspan class=\"Apple-tab-span\" style=\"white-space:pre\"\u003e\t\u003c\/span\u003eDIN rail mounting (. mm wide)\u003c\/div\u003e\u003cdiv\u003e\n\u003cspan class=\"Apple-tab-span\" style=\"white-space:pre\"\u003e\t\u003c\/span\u003e•\u003cspan class=\"Apple-tab-span\" style=\"white-space:pre\"\u003e\t\u003c\/span\u003eDegree of protection: Housing IP, terminals IP\u003c\/div\u003e\u003cdiv\u003e\n\u003cspan class=\"Apple-tab-span\" style=\"white-space:pre\"\u003e\t\u003c\/span\u003e•\u003cspan class=\"Apple-tab-span\" style=\"white-space:pre\"\u003e\t\u003c\/span\u003eElectrical durability: , cycles (AC-)\u003c\/div\u003e\u003cdiv\u003e\n\u003cspan class=\"Apple-tab-span\" style=\"white-space:pre\"\u003e\t\u003c\/span\u003e•\u003cspan class=\"Apple-tab-span\" style=\"white-space:pre\"\u003e\t\u003c\/span\u003eMechanical durability: ,, cycles\u003c\/div\u003e\u003cdiv\u003e\n\u003cspan class=\"Apple-tab-span\" style=\"white-space:pre\"\u003e\t\u003c\/span\u003e•\u003cspan class=\"Apple-tab-span\" style=\"white-space:pre\"\u003e\t\u003c\/span\u003eStandards: IEC\/EN -, UL , CAN\/CSA C. No.\u003c\/div\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":55818549854582,"sku":"EB-286669234465","price":198.55,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0754\/4202\/8857\/files\/57_a9c38239-1ca9-42cb-975b-4b3d41dc546b.png?v=1750720991","url":"https:\/\/volt-werk.com\/products\/abb-cm-ess-2s-1svr730831r0400-single-phase-voltage-monitoring-relay","provider":"VOLTWERK Handel","version":"1.0","type":"link"}