{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA6920-2A","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA6920-2A","canonicalUrl":"https://aoctrl.com/siemens/3RA6920-2A","factsUrl":"https://aoctrl.com/api/mcp/products/3RA6920-2A","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA6920-2A main circuit terminal block, spring-loaded terminals, 45 mm width, 30 mm depth, IP20 finger-safe front, for motor starter assemblies.","salesMarkdown":"## Panel fit — the dimensions that decide the row The 3RA6920-2A: At 45 mm wide, 32 mm tall, and only 30 mm deep, this terminal block tucks into the tightest DIN-rail rows — the shallow depth leaves room behind for wiring ducts or a second rail layer. The spring-loaded main circuit terminals accept solid or finely stranded copper: up to 12 A you can land two conductors per clamp (1.5–6 mm² each), and up to 32 A still allows two conductors (2.5–6 mm² each). That dual-conductor entry lets you daisy-chain motor feeds without an extra junction block. Stripped length is a uniform 10 mm — set your wire stripper once and work through the whole panel. ## What the spring-clamp terminals mean for the wireman Spring-loaded (cage-clamp) terminals on both the main circuit and the auxiliary/control circuit — no screw torque to verify, no vibration loosening over time. The clamp holds the full conductor cross-section without cold flow. AWG equivalents are listed alongside metric: up to 12 A you can land 2x (16–14 AWG), 2x (14–10 AWG), or a single 8 AWG; up to 32 A accepts 2x (14–10 AWG) or a single 8 AWG. Finger-safe IP20 front protection per IEC 60529 means an operator brushing against the terminal strip during troubleshooting won't contact live metal — a real help when the panel is powered for diagnostics. ## Environmental envelope — where it lives in the cabinet Rated for -20 to +60°C during operation, with storage and transport tolerance from -55 to +80°C. That covers unheated warehouses in winter and sun-loaded enclosures in summer without derating. Relative humidity during operation is 10–90% — no special coating needed for most indoor industrial environments, but if your line sees condensation cycles, the IP20 front still keeps moisture off the live terminals. Part of the SIRIUS family — the same accessory platform used across Siemens motor starters, so panel spares and expansion share a common terminal system.","metaTitle":"Siemens 3RA6920-2A SIRIUS Motor Starter","metaDescription":"Active Siemens 3RA6920-2A SIRIUS motor starter accessory. Spring-loaded main circuit terminals, 45mm wide, 30mm deep, IP20 finger-safe.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Motor Starters"],"specifications":{"Depth":"30mm","Solid":"up to 12 A: 2x (1.5 ... 6 mm²), up to 32 A: 2x (2.5 ... 6 mm²)","Width":"45mm","title":"3RA6920-2A","Height":"32mm","description":"Main circuit terminals Inclusion and connection Main circuit: Spring-type terminal","During Storage":"-55 ... +80°C","Stripped Length":"10mm","lifecycle_stage":"current","During Operation":"-20 ... +60°C","During Transport":"-55 ... +80°C","Product Brand Name":"SIRIUS","Product Designation":"main circuit terminals (ingoing as well as outgoing)","For Main Current Circuit":"spring-loaded terminals","at AWG cables for main contacts":"up to 12 A: 2x (16 ... 14), 2x (14 ... 10), 1x 8, up to 32 A: 2x (14 ... 10), 1x 8","For Auxiliary And Control Circuit":"spring-loaded terminals","Relative Humidity During Operation":"10 ... 90%","reference code acc. to DIN EN 61346-2":"X","Finely Stranded With Core End Processing":"up to 12 A: 2x (1.5 ... 6 mm²), up to 32 A: 2x (2.5 ... 6 mm²)","touch protection on the front acc. to IEC 60529":"Finger-safe, for vertical contact","protection class IP on the front acc. to IEC 60529":"IP20"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/ef20d89386533c578f3a19bb5ff908db.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=422067&mlfb=3RA6920-2A"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3RA6920-2A?","answer":"Submit an RFQ against your BOM quantity."},{"question":"What is 3RA6920-2A's depth?","answer":"The depth is 30 mm, with a width of 45 mm and height of 32 mm — a compact footprint for dense DIN-rail layouts."},{"question":"What wire sizes does the spring terminal accept?","answer":"Solid or finely stranded: up to 12 A accepts 2x (1.5–6 mm²) or 2x (16–14 AWG), 2x (14–10 AWG), 1x 8 AWG; up to 32 A accepts 2x (2.5–6 mm²) or 2x (14–10 AWG), 1x 8 AWG. Stripped length is 10 mm."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA6920-2A","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/3RA6920-2A 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}}