{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1035-3BB40-ZN88","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1035-3BB40-ZN88","canonicalUrl":"https://aoctrl.com/siemens/3RT1035-3BB40-ZN88","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1035-3BB40-ZN88","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S2, 24 VDC coil, screw terminals, 22 kW at 500 V AC-3, 55 mm width, DIN rail mount.","salesMarkdown":"Rated at 22 kW at 500 V in AC-3 duty (the standard motor-switching category per IEC 60947-4-1), it handles the locked-rotor inrush of a 3-phase induction motor up to that power. At 690 V the AC-3 rating drops to 11.4 kW, reflecting the higher voltage stress on the arc chutes. The 24 VDC coil draws a holding current that keeps the magnet sealed down to about 18 V; dropout happens below that threshold. Depth is 130 mm — enough clearance for the arc chamber and the screw-terminal wiring. Main power terminals accept stranded wire from 0.75 mm² up to 25 mm² (two conductors per clamp), or solid wire from 0.25 mm² up to 2.5 mm². At 40 °C ambient, the minimum permissible cross-section is 16 mm² — that's the thermal sizing floor for full rated current. ## Environmental range and compliance The storage range exceeds the operating range because it governs shipping and idle storage, not running conditions.","metaTitle":"Siemens 3RT1035-3BB40-ZN88 SIRIUS Power Contactor, 24 VDC Co","metaDescription":"Siemens SIRIUS 3RT1035-3BB40-ZN88 power contactor, size S2, 24 VDC coil. Rated 22 kW at 500 V AC-3. Screw terminals, DIN rail mount. Active production. Sourced to order against RFQ","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"130 mm","Solid":"2x (0.25 ... 2.5 mm²)","Width":"55 mm","at DC":"20 ... 25 ms","Height":"112 mm","Stranded":"2x (0.75 ... 25 mm²)","Arcing Time":"10 ... 15 ms","Rated Value":"24 V","On The Front":"IP20","Initial Value":"0.8","During Storage":"-55 ... +80 °C","Of The Terminal":"IP00","at AC-1 maximum":"1 200 1/h","at AC-2 maximum":"600 1/h","at AC-3 maximum":"1 000 1/h","at AC-4 maximum":"300 1/h","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022","Full-Scale Value":"1.1","Size Of Contactor":"S2","Solid Or Stranded":"2x (0.75 ... 16 mm²)","Product Brand Name":"SIRIUS","Degree Of Pollution":"3","Product Designation":"power contactor","at 24 V rated value":"10 A","at 60 V rated value":"2 A","Of Contactor Typical":"10 000 000","at 110 V rated value":"1 A","at 220 V rated value":"0.3 A","at 230 V rated value":"6 A","at 400 V rated value":"3 A","at 500 V rated value":"22 kW","at 690 V rated value":"11.4 kW","Side-By-Side Mounting":"Yes","For Main Current Circuit":"screw-type terminals","at AC-2 at 400 V rated value":"18.5 kW","at AC-4 at 400 V rated value":"35 A","Substance Prohibitance (Date)":"05/01/2012","at 40 °C minimum permissible":"16 mm²","at 60 °C minimum permissible":"16 mm²","Insulation Voltage Rated Value":"690 V","at 230 V at 60 °C rated value":"22 kW","at 690 V at 60 °C rated value":"66 kW","at AWG cables for main contacts":"2x (18 ... 2)","For Auxiliary And Control Circuit":"spring-loaded terminals","With Type Of Assignment 2 Required":"fuse gL/gG: 63 A","closing power of magnet coil at DC":"13.3 W","holding power of magnet coil at DC":"13.3 W","Surge Voltage Resistance Rated Value":"6 kV","With Type Of Coordination 1 Required":"fuse gL/gG: 125 A","at AWG cables for auxiliary contacts":"2x (24 ... 14)","operational current at AC-12 maximum":"10 A","number of NC contacts for main contacts":"0","number of NO contacts for main contacts":"3","reference code according to IEC 81346-2":"Q","Finely Stranded With Core End Processing":"2x (0.25 ... 1.5 mm²)","Number Of Poles For Main Current Circuit":"3","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","Thermal Short-Time Current Limited To 10 S":"400 A","Finely Stranded Without Core End Processing":"2x (0.25 ... 2.5 mm²)","Type Of Voltage Of The Control Supply Voltage":"DC","Required Spacing For Grounded Parts At The Side":"6 mm","contact rating of auxiliary contacts according to UL":"A600 / Q600","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 10 A","number of NC contacts for auxiliary contacts instantaneous contact":"0","number of NO contacts for auxiliary contacts instantaneous contact":"0","Of The Contactor With Added Electronically Optimized Auxiliary Switch Block Typical":"5 000 000"}},"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=226378&mlfb=3RT1035-3BB40-ZN88","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1035-3BB40-ZN88/alternatives.json"},"ai":{"faq":[{"question":"What is the coil voltage for this contactor?","answer":"The coil is rated at 24 VDC. Pickup and dropout times are 20 to 25 ms, with an arcing time of 10 to 15 ms."},{"question":"What motor power can the 3RT1035-3BB40-ZN88 switch?","answer":"In AC-3 duty (motor starting) it is rated at 22 kW at 500 V and 11.4 kW at 690 V. In AC-4 duty (plugging/inching) at 400 V it is rated at 35 A."},{"question":"How do I get current pricing and availability for 3RT1035-3BB40-ZN88?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Current pricing and availability are confirmed at quote time."},{"question":"What compliance documentation does this contactor carry?","answer":"RoHS compliance is documented with a substance prohibition date of 05/01/2012. The SIRIUS series typically carries UL, CSA, and CE certifications, though specific approvals for this order code should be verified against the nameplate."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1035-3BB40-ZN88","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/3RT1035-3BB40-ZN88 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}}