{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA9877-0GX31","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA9877-0GX31","canonicalUrl":"https://aoctrl.com/siemens/3VA9877-0GX31","factsUrl":"https://aoctrl.com/api/mcp/products/3VA9877-0GX31","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA9877-0GX31 auxiliary switch module, 1 aux switch, OFF to ON, for 3VA57/3VA58/3VA59 and 3VA67/3VA68/3VA69 breakers, 5 A thermal current, -40 to 80 °C, pollution degree 3.","salesMarkdown":"The Siemens 3VA9877-0GX31 is a SENTRON auxiliary switch module — one auxiliary switch, OFF to ON — designed as a field-installable accessory for the 3VA57/3VA58/3VA59 and 3VA67/3VA68/3VA69 families of molded-case circuit breakers. It mounts inside the breaker's rotary operator mechanism, not on a separate DIN rail, so the panel layout stays unchanged when you add it. The thermal current rating of 5 A (Ith) sets the continuous carry limit through the auxiliary contacts — adequate for signaling a PLC input or a contactor coil, not for powering a load directly. Switching capability is defined per utilization category across the voltage range. In AC-12 (resistive loads like pilot lamps and relays) it switches 5 A from 12 V up to 240 V. In AC-15 (solenoid and contactor coils) it switches 2 A across the same voltage range. For DC-13 (solenoid valves, DC contactors) it switches 0.2 A at 12 V through 250 V — the same 0.2 A limit holds at 110 V and 250 V DC, so verify your DC load current stays under that ceiling. Surge voltage resistance of 4 kV matches the impulse withstand expected in a 400 V distribution panel.","metaTitle":"Siemens 3VA9877-0GX31 SENTRON Auxiliary Switch, 5 A Thermal,","metaDescription":"Siemens 3VA9877-0GX31 SENTRON auxiliary switch module for 3VA57/58/59 and 3VA67/68/69 breakers. Rated 5 A thermal current, -40 to 80 °C, pollution degree 3. Active production, avai","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Breaker Accessories"],"specifications":{"title":"3VA9877-0GX31","Maximum":"80 °C","Minimum":"-40 °C","Accessories":"Auxiliary switch module","description":"Auxiliary contacts for rotary operators 1 aux switch, OFF to ON accessory for: 3VA57/3VA58/3VA59 3VA67/3VA68/3VA69","Thermal Current":"5 A","lifecycle_stage":"current","Product Brand Name":"SENTRON","at AC-12 / at 12 V":"5 A","at AC-12 / at 24 V":"5 A","at AC-12 / at 48 V":"5 A","at AC-15 / at 12 V":"2 A","at AC-15 / at 24 V":"2 A","at AC-15 / at 48 V":"2 A","at DC-13 / at 12 V":"0.2 A","at DC-13 / at 24 V":"0.2 A","at DC-13 / at 48 V":"0.2 A","Degree Of Pollution":"3","at AC-12 / at 125 V":"5 A","at AC-15 / at 125 V":"2 A","at DC-13 / at 110 V":"0.2 A","at DC-13 / at 250 V":"0.2 A","Overvoltage Category":"III","at AC-12 / at 220/240 V":"5 A","at AC-15 / at 220/240 V":"2 A","Surge Voltage Resistance":"4 kV","operating voltage / at DC / rated value / minimum":"250 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/89d1c854b35c2d95dbd900d2174b8faf.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1542300&mlfb=3VA9877-0GX31"},"ai":{"faq":[{"question":"What is the 3VA9877-0GX31 used for?","answer":"It is an auxiliary switch module that mounts inside the rotary operator of Siemens 3VA57/3VA58/3VA59 and 3VA67/3VA68/3VA69 molded-case circuit breakers, providing one OFF-to-ON auxiliary contact for status feedback to a PLC or control system."},{"question":"What are the key switching ratings of the 3VA9877-0GX31?","answer":"The thermal continuous current is 5 A. For AC-12 resistive loads it switches 5 A from 12 V to 240 V. For AC-15 inductive loads (coils, solenoids) it switches 2 A across the same voltage range. For DC-13 loads it switches 0.2 A from 12 V up to 250 V."},{"question":"Where can I buy the 3VA9877-0GX31?","answer":"The 3VA9877-0GX31 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA9877-0GX31","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/3VA9877-0GX31 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:47:38.189Z","lastPublished":"2026-07-22T19:47:38.189Z","indexable":true}}