{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1SVR730824R9300","brand":"ABB","brandSlug":"abb","productSlug":"1SVR730824R9300","canonicalUrl":"https://aoctrl.com/abb/1SVR730824R9300","factsUrl":"https://aoctrl.com/api/mcp/products/1SVR730824R9300","rawCanonicalId":null},"summary":{"shortDescription":"ABB 1SVR730824R9300, 3-Phase Monitoring Relay / Voltage Monitor, 200-500V AC, SPDT, DIN Rail Mount.","salesMarkdown":"## What the 200-500V AC range means for your panel The ABB 1SVR730824R9300 is a 3-phase voltage monitor relay that continuously measures all three phases against a 200-500V AC range. It is a functional protection device: it trips the SPDT output when it detects loss of any phase or an unbalance condition between phases. The 200-500V AC range covers common low-voltage three-phase supplies — 208V, 240V, 400V, 480V — without needing a separate voltage tap or range card. That means one part number covers most industrial panel voltages in North America and Europe. ## Phase loss and unbalance detection — what trips the relay The relay monitors for loss of any phase (a single-phase condition that stalls motors and overheats windings) and phase unbalance (asymmetrical voltage that causes negative-sequence currents). When either condition exceeds the internal threshold, the SPDT output switches state, typically dropping out a motor contactor or signaling a PLC input. Mounting is DIN rail (snap-on to standard 35 mm rail per EN 60715), so it integrates into a control panel alongside contactors, overloads, and terminal blocks without extra brackets.","metaTitle":"ABB 1SVR730824R9300 Voltage Monitor, 3-Phase, 200-500V AC","metaDescription":"ABB 1SVR730824R9300 3-phase monitoring relay, voltage monitor type, 200-500V AC range, SPDT output, DIN rail mount. Protects against phase loss and unbalance.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["General Purpose Relays"],"specifications":{"Type":"Voltage Monitor","Phase":"3","title":"1SVR730824R9300","Mounting":"DIN Rail","description":"3-Phase Monitoring Relay|Voltage Monitor. 3-Phase, 200-500V AC, SPDT, DIN Rail Mount. Functional Protection: Loss of any Phase, Phase Unbalance.","Volts AC Range":"200 - 500","lifecycle_stage":"current"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$45.72 – $98.00","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/626a9a80e98b09f5aad107da1dd9084d.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What does ABB 1SVR730824R9300 protect against?","answer":"It protects against loss of any phase and phase unbalance. These are the two most common supply faults that damage three-phase motors and other loads."},{"question":"How does ABB 1SVR730824R9300 detect phase loss?","answer":"The relay continuously measures the voltage on each of the three phases. If one phase drops below the detection threshold relative to the others, the SPDT output switches to indicate a fault condition."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/abb/1SVR730824R9300","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/1SVR730824R9300 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}