{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1SVR730840R0400","brand":"ABB","brandSlug":"abb","productSlug":"1SVR730840R0400","canonicalUrl":"https://aoctrl.com/abb/1SVR730840R0400","factsUrl":"https://aoctrl.com/api/mcp/products/1SVR730840R0400","rawCanonicalId":null},"summary":{"shortDescription":"ABB 1SVR730840R0400 CM-SRS.21S current monitoring relay, 0.07 kg, active production.","salesMarkdown":"## CM-SRS.21S Current Monitor for Overload and Phase Loss The ABB 1SVR730840R0400 is a CM-SRS.21S current monitoring relay in the ABB CM family, used to detect overcurrent, undercurrent, and phase loss conditions on three-phase motor loads. It sits in the Phase & Voltage Loss Monitors subcategory, meaning it's wired into the control circuit of a motor starter or contactor to trip on fault conditions — a common fit in compressor, pump, and conveyor panels where unmonitored single-phasing would burn out a winding. The CM-SRS.21S uses screw-clamp terminals; the current transformer input passes through the relay body, and the output contacts are rated for switching the coil of a contactor or PLC input module.","metaTitle":"ABB 1SVR730840R0400 CM-SRS.21S Current Monitoring Relay","metaDescription":"ABB 1SVR730840R0400 CM-SRS.21S current monitoring relay. Active production, sourced to order. Request a quote for current pricing and availability.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["General Purpose Relays"],"specifications":{"Part #":"1SVR730840R0400","Weight":"0.07 kgs","Category":"Relays","Sub Category":"Phase & Voltage Loss Monitors","Top Category":"Circuit Breakers, Fuses & Protection","lifecycle_stage":"current"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$95.36 – $148.00","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/6c455a817e73594e4952aefcc15ee794.pdf","sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/1SVR730840R0400/alternatives.json"},"ai":{"faq":[{"question":"What is the function of ABB 1SVR730840R0400?","answer":"The ABB 1SVR730840R0400 CM-SRS.21S is a current monitoring relay that detects overcurrent, undercurrent, and phase loss on three-phase motor loads, typically wired into a motor starter control circuit to trip the contactor on fault."},{"question":"Where can I buy ABB 1SVR730840R0400 and get a price?","answer":"The ABB 1SVR730840R0400 is available to order through independent distribution. Submit an RFQ for current pricing and lead time on your required quantity."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/abb/1SVR730840R0400","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/abb/1SVR730840R0400 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}