{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1035-1BB44-ZM96","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1035-1BB44-ZM96","canonicalUrl":"https://aoctrl.com/siemens/3RT1035-1BB44-ZM96","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1035-1BB44-ZM96","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, Size S2, 3RT1035-1BB44-ZM96, 22 kW at 500 V, AC-4 35 A at 400 V, screw-type terminals, DIN rail mount, IP20 front.","salesMarkdown":"## SIRIUS Size S2 Power Contactor — 3RT1035-1BB44-ZM96 The Siemens 3RT1035-1BB44-ZM96 is a SIRIUS power contactor in the Size S2 frame, rated for motor switching at 22 kW at 500 V (AC-3) and 18.5 kW at 400 V (AC-2), with an AC-4 breaking current of 35 A at 400 V for reversing or inching duty. ## Ratings and Duty Cycles AC-1 resistive switching supports up to 1,200 operations per hour, while AC-3 motor duty allows 1,000 ops/h. The more severe AC-4 category (plugging, inching) is rated at 300 ops/h, reflecting the higher electrical stress on the contacts during reversal or jogging. Pollution degree 3 (conductive pollution, typical for industrial control panels) is specified, so no additional conformal coating is required for normal factory-floor environments. RoHS compliance date is noted as May 1, 2012, indicating the part meets the EU RoHS substance restrictions effective from that date. Main circuit terminals accept solid or stranded conductors: 2x (0.75 to 16 mm²) for the power path, with a minimum permissible cross-section of 16 mm² at 40 °C for full-rated current. Auxiliary/control terminals accept solid wire: 2x (0.5 to 1.5 mm²) and 2x (0.75 to 2.5 mm²), with a maximum of 2x (0.75 to 4 mm²). Stranded terminations on the control side accept 2x (0.75 to 25 mm²). Dimensions: 112 mm height, 55 mm width, 179 mm depth — the depth is the key constraint when fitting into shallow enclosures or behind gland plates.","metaTitle":"Siemens 3RT1035-1BB44-ZM96 SIRIUS Power Contactor, Size S2,","metaDescription":"Siemens SIRIUS 3RT1035-1BB44-ZM96 power contactor, Size S2, 22 kW at 500 V, AC-4 35 A at 400 V. Screw terminals, DIN rail mount. Active lifecycle. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"179 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 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":"screw-type 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 (20 ... 16), 2x (18 ... 14), 1x 12","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 (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 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 (0.75 ... 16 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":"2","number of NO contacts for auxiliary contacts instantaneous contact":"2","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=247595&mlfb=3RT1035-1BB44-ZM96","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1035-1BB44-ZM96/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source for 3RT1035-1BB44-ZM96?","answer":"The 3RT1044-1FB46 is a larger-frame SIRIUS contactor (Size S3 vs S2) with higher current ratings; it will not drop into the same DIN footprint without panel modification. For a form-fit-function match within the S2 frame, the 3RT5035-1AH00 is a comparable SIRIUS contactor with similar AC-3 power ratings, but verify coil voltage and terminal configuration for your specific BOM."},{"question":"What is 3RT1035-1BB44-ZM96's listed depth?","answer":"The depth is 179 mm, which is the dimension from the DIN rail mounting surface to the furthest projection of the device body."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1035-1BB44-ZM96","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/3RT1035-1BB44-ZM96 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}}