{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA9477-0GX20","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA9477-0GX20","canonicalUrl":"https://aoctrl.com/siemens/3VA9477-0GX20","factsUrl":"https://aoctrl.com/api/mcp/products/3VA9477-0GX20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA9477-0GX20 auxiliary switch module, rotary operator, 2 x leading to ON and 1 x leading to OFF, 5 A thermal current, for 3VA5 and 3VA6 breakers.","salesMarkdown":"The Siemens SENTRON 3VA9477-0GX20 is an auxiliary switch module with a rotary operator mechanism, designed as an accessory for 3VA5 (250/400/600 A frames) and 3VA6 (150/250/400/600 A frames) molded-case circuit breakers. It provides two contacts that lead to the ON position and one contact that leads to the OFF position, giving the panel builder a clean way to signal breaker status back to a PLC or indicator lamp without adding a separate interposing relay. Rated thermal current is 5 A, and the switching capacity is defined across three utilization categories that matter for different load types: AC-12 (resistive loads and solid-state inputs) carries the full 5 A at 12 V through 240 V AC; AC-15 (inductive loads like contactor coils) is rated 2 A across the same voltage range; and DC-13 (solenoid valves and DC contactors) is rated 0.2 A at 12 V through 250 V DC. That 0.2 A DC limit is the one that catches people out — if you're switching a DC coil that pulls 300 mA, this contact won't hold up under DC break. The module measures 88.5 mm wide by 41.85 mm tall by 70 mm deep. It mounts directly onto the 3VA breaker's rotary operator mechanism — no separate DIN-rail footprint, no extra wiring trough. The 70 mm depth sits flush with the breaker body, so it doesn't push the panel door out.","metaTitle":"Siemens 3VA9477-0GX20 SENTRON Auxiliary Switch Module, 5 A","metaDescription":"Siemens 3VA9477-0GX20 SENTRON auxiliary switch module for 3VA circuit breakers. Rated 5 A AC-12, 2 A AC-15, 0.2 A DC-13. Active production, available to order. Request quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Breaker Accessories"],"specifications":{"Depth":"70 mm","Width":"88.5 mm","title":"3VA9477-0GX20","Height":"41.85 mm","Maximum":"80 °C","Minimum":"-40 °C","Accessories":"Auxiliary switch module","description":"Aux switch module rot op mech 2 x leading to \"ON\" and 1 x leading to \"OFF\" Accessory for: 3VA5 250/400/600 3VA6 150/250/400/600","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","Product Designation":"Auxiliary switch module, rotary operator","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","Design Of The Product":"Accessories for 3VA circuit breakers","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/e57bf451ec197a83c982c9866068ac44.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1385890&mlfb=3VA9477-0GX20"},"ai":{"faq":[{"question":"What is 3VA9477-0GX20 used for?","answer":"It is an auxiliary switch module for Siemens SENTRON 3VA5 and 3VA6 molded-case circuit breakers. It provides two NO contacts that close when the breaker is ON and one NC contact that closes when the breaker is OFF, used to signal breaker status to a control system or indicator."},{"question":"What are the switching ratings for 3VA9477-0GX20?","answer":"Thermal current is 5 A. AC-12 (resistive) rating is 5 A at 12 V through 240 V. AC-15 (inductive) rating is 2 A at the same voltages. DC-13 rating is 0.2 A at 12 V through 250 V DC."},{"question":"Where can I buy 3VA9477-0GX20?","answer":"This part is sourced to order through independent industrial-automation distribution. Submit an RFQ for current pricing and availability confirmation."},{"question":"Will 3VA9477-0GX20 fit on a 5SL4363-7 miniature circuit breaker?","answer":"No. The 3VA9477-0GX20 is designed specifically for 3VA5 and 3VA6 molded-case circuit breakers. The 5SL4363-7 is a different product line (SENTRON miniature circuit breaker) with a different mounting interface and form factor."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA9477-0GX20","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/3VA9477-0GX20 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}}