{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2712-1CB00","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2712-1CB00","canonicalUrl":"https://aoctrl.com/siemens/3RA2712-1CB00","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2712-1CB00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens Sirius 3RA2712-1CB00 AS-i basic module, star-delta (wye-delta) starter, 24 V DC control supply, screw-type terminals, varistor surge suppression, IP20 finger-safe front, 45 mm width.","salesMarkdown":"## What this AS-i module does — star-delta starting on the bus The 3RA2712-1CB00 is a Sirius basic module that adds AS-i bus communication to a star-delta (wye-delta) starter assembly. It plugs onto the front of a communication-capable Siemens contactor (3RT20…-…..-0CC0 series) — no separate DIN rail mount needed. Control supply is 24 V DC, the standard industrial bus voltage. It handles star-delta starting logic over the AS-i network, meaning the transition timing and motor protection can be managed from the PLC rather than a separate timer relay. ## Mounting and wiring — fits which contactors, what wire sizes The module snaps onto the front of contactor frame sizes S00, S0, S2, or S3. That covers the common Siemens contactor range from small auxiliary to 65 A motor switching. Mounting position is any orientation. Screw-type terminals accept solid wire 0.5–4 mm² or two conductors 0.5–2.5 mm². AWG equivalent is 20–14 for two conductors. The terminal block is removable — you can pre-wire the harness and snap it onto the module during panel assembly. ## Environmental and EMC — industrial panel conditions Rated for industrial ambience A per IEC 60947-1 on both emissions (CISPR 11) and immunity. ESD withstand is 8 kV contact per IEC 61000-4-2; radiated field immunity is 10 V/m per IEC 61000-4-3. This means it's qualified for installation near VFDs, welding gear, and switching power supplies without extra shielding. Pollution degree 3 (conductive pollution or dry non-conductive that becomes conductive with condensation) — typical for control panels in industrial floors. Vibration resistance is 11–55 Hz at 0.35 mm displacement; shock resistance is 11 g for 15 ms. The IP20 front protection is finger-safe per IEC 60529, adequate for enclosed panels. ## Insulation voltage and altitude — system voltage limits Maximum installation altitude is 2000 m above sea level without derating.","metaTitle":"Siemens 3RA2712-1CB00 AS-i Basic Module, Star-Delta Starter","metaDescription":"Siemens 3RA2712-1CB00 Sirius AS-i basic module for star-delta starting. 24V DC control, screw terminals, IP20, varistor suppression.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Motor Starters"],"specifications":{"Depth":"75mm","Solid":"0.5 ... 4 mm², 2x (0.5 ... 2.5 mm²)","Width":"45mm","title":"3RA2712-1CB00","Height":"37mm","description":"basic module for AS-i, star-delta (wye-delta) start screw terminal, can be snapped on at the front on communication-capable contactor 3RT20…-…..-0CC0","Direct Starter":"No","During Storage":"-40 ... +80°C","lifecycle_stage":"current","During Operation":"-25 ... +60°C","During Transport":"-40 ... +80°C","Fastening Method":"can be plugged into contactor","Shock Resistance":"11g / 15 ms","Bus Communication":"Yes","Mounting Position":"any","Reversing Starter":"No","Product Brand Name":"Sirius","Star-Delta Starter":"Yes","Degree Of Pollution":"3","Product Designation":"Basic module","acc. to IEC 81346-2":"K","Vibration Resistance":"11 ... 55 Hz / 0,35 mm","Design Of The Product":"AS-i","acc. to DIN EN 61346-2":"K","With Core End Processing":"1x (0.5 ... 2.5 mm²), 2x (0.5 ... 1.5 mm²)","Design Of The Surge Suppressor":"Varistor","EMC immunity acc. to IEC 60947-1":"ambience A (industrial sector)","at AWG cables for auxiliary contacts":"2x (20 ... 14)","control supply voltage 1 at DC rated value":"24V","control circuit interface with AS-interface":"Yes","EMC emitted interference acc. to IEC 60947-1":"CISPR11, ambience A (industrial sector)","Type Of Voltage Of The Control Supply Voltage":"DC","electrostatic discharge acc. to IEC 61000-4-2":"8 kV","field-based interference acc. to IEC 61000-4-3":"10 V/m","touch protection on the front acc. to IEC 60529":"finger-safe, for vertical contact from the front","Size Of Contactor Can Be Combined Company-Specific":"S00, S0, S2, S3","protection class IP on the front acc. to IEC 60529":"IP20","Installation Altitude At Height Above Sea Level Maximum":"2 000m","Type Of Electrical Connection For Auxiliary And Control Circuit":"screw-type terminals","insulation voltage with degree of pollution 3 at AC rated value":"690V","Product Component Removable Terminal For Auxiliary And Control Circuit":"Yes"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$120.65","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/799b87d2d42e643a37f8bca7f9bb87cf.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=380915&mlfb=3RA2712-1CB00"},"ai":{"faq":[{"question":"What contactor sizes does 3RA2712-1CB00 mount on?","answer":"The specific contactor order code suffix is -0CC0."},{"question":"Does 3RA2712-1CB00 support reversing or direct-on-line starting?","answer":"No. This module is specifically designed for star-delta (wye-delta) starting only. It is not a direct starter or reversing starter."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2712-1CB00","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/3RA2712-1CB00 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}}