{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1975-5QP31","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1975-5QP31","canonicalUrl":"https://aoctrl.com/siemens/3RT1975-5QP31","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1975-5QP31","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, changeover operating mechanism (magnet coil), 200-277 V AC/DC, for 3RT107/3RT147 contactors, electronic with AS-Interface and RLT signal, 3RT1975-5QP31.","salesMarkdown":"The Siemens SIRIUS 3RT1975-5QP31 is a changeover operating mechanism — essentially a magnet coil assembly — designed for the 3RT107 and 3RT147 series power contactors. It operates on AC/DC control supply voltage, rated at 200 V DC and 277 V AC (both 50 and 60 Hz), and includes an electronic module with AS-Interface communication and an RLT signal output. The 200-277 V AC/DC control voltage range covers common global control voltages — 208 V, 220 V, 240 V, and 277 V panels — without needing a separate transformer tap. The AC/DC type means it works on both rectified DC buses and standard AC control circuits, simplifying panel wiring. This is a changeover operating mechanism, not a standard contactor coil. It mounts onto the 3RT107 (size S12) and 3RT147 contactor frames, providing mechanical interlocking for reversing or two-speed applications. The electronic module handles the timing and includes AS-Interface for status feedback and an RLT (Remote Local Trip) signal. For panels originally specified around the 3RT1076-6AU36 power contactor, this coil is the correct mating changeover mechanism. The 3RT1076-6AU36 is a size S12 contactor with screw terminals; the 3RT1975-5QP31 bolts onto it without rewiring the main power circuit, though the control wiring must match the 200-277 V AC/DC coil rating. ## Deployment context Designed for panel-mount integration with SIRIUS contactors in motor control centers, conveyor systems, and pump stations. The AS-Interface link allows direct connection to an AS-i master for status monitoring without additional I/O wiring.","metaTitle":"Siemens 3RT1975-5QP31 SIRIUS Magnet Coil, 200-277 V AC/DC","metaDescription":"Siemens SIRIUS 3RT1975-5QP31 changeover operating mechanism for 3RT107/3RT147 contactors. 200-277 V AC/DC, electronic with AS-Interface. Current lifecycle stage, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"lifecycle_stage":"current","Product brand name":"SIRIUS","1 at DC rated value":"200 V","2 at DC rated value":"277 V","Product designation":"Magnet coil","at 50 Hz rated value":"277 V","at 60 Hz rated value":"277 V","Type of voltage of the control supply voltage":"AC/DC"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=381120&mlfb=3RT1975-5QP31","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1975-5QP31/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source for 3RT1975-5QP31?","answer":"The 3RT1076-6AU36 is the primary contactor this coil mates with — it is the correct changeover mechanism for that size S12 frame. No direct second-source exists from other manufacturers; this is a Siemens-specific form factor."},{"question":"Will 3RT1975-5QP31 drop into a panel wired for 3RT1076-6AU36?","answer":"Yes, it is designed as the changeover operating mechanism for the 3RT1076-6AU36 contactor. The mechanical fit is direct; verify the control voltage matches your panel's 200-277 V AC/DC supply."},{"question":"Where can I buy 3RT1975-5QP31 and how is it quoted?","answer":"Sourced to order through independent distribution. Submit an RFQ for current pricing and availability — confirmed at quote time, no minimum order quantity restrictions."},{"question":"What compliance documentation is available for 3RT1975-5QP31?","answer":"As a Siemens SIRIUS component, it carries CE marking and is manufactured under IEC/EN standards. Specific RoHS and REACH declarations are available through the manufacturer's documentation portal."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1975-5QP31","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/3RT1975-5QP31 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}}