{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH2253-1BB40","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH2253-1BB40","canonicalUrl":"https://aoctrl.com/siemens/3RH2253-1BB40","factsUrl":"https://aoctrl.com/api/mcp/products/3RH2253-1BB40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary contactor 3RH2253-1BB40, 24 V DC, size S00, 45 mm width, 117 mm depth, screw and snap-on DIN rail.","salesMarkdown":"## Panel fit and mounting — no shop, no crane Width 45 mm, depth 117 mm, height 57.5 mm. Air gaps needed: 10 mm upward, downward, and forward (-), 6 mm sideways — that's the arc clearance. So you can wedge it into a crowded panel as long as you leave those gaps. Can you fix it where it sits? Yeah — easy access to the screw terminals, no special tools.","metaTitle":"Siemens 3RH2253-1BB40 SIRIUS Aux Contactor, 24V","metaDescription":"SIRIUS auxiliary contactor, 24 V DC coil, 45 mm wide, 117 mm deep. In current production. DIN rail screw/snap-on. Sourced to order – RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"117 mm","Width":"45 mm","at AC":"10 000 1/h","at DC":"7 ... 13 ms","Height":"57.5 mm","Upwards":"10 mm","Forwards":"10 mm","Downwards":"10 mm","Arcing Time":"10 ... 15 ms","At The Side":"6 mm","Rated Value":"24 V","Initial Value":"0.8","During Storage":"-55 ... +80 °C","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm DIN rail","Full-Scale Value":"1.1","Mounting Position":"+/-180° rotation possible on vertical mounting surface; can be tilted forward and backward by +/- 22.5° on vertical mounting surface","Size Of Contactor":"S00","Solid Or Stranded":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), 2x 4 mm²","Product Brand Name":"SIRIUS","Degree Of Pollution":"3","Product Designation":"Auxiliary contactor","at 24 V rated value":"10 A","at 60 V rated value":"4.7 A","Of Contactor Typical":"10 000 000","at 110 V rated value":"3 A","at 220 V rated value":"1.2 A","at 230 V rated value":"6 A","at 400 V rated value":"3 A","at 440 V rated value":"0.5 A","at 500 V rated value":"2 A","at 600 V rated value":"0.26 A","at 690 V rated value":"1 A","Instantaneous Contact":"5","Relative Humidity Minimum":"10 %","Substance Prohibitance (Date)":"10/01/2009","Product Extension Auxiliary Switch":"No","closing power of magnet coil at DC":"4 W","holding power of magnet coil at DC":"4 W","Surge Voltage Resistance Rated Value":"6 kV","at AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 2x 12","operating frequency at DC-12 maximum":"1 000 1/h","operating frequency at DC-13 maximum":"1 000 1/h","operational current at AC-12 maximum":"10 A","reference code according to IEC 81346-2":"K","Finely Stranded With Core End Processing":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","with low demand rate according to SN 31920":"40 %","with high demand rate according to SN 31920":"73 %","number of NC contacts for auxiliary contacts":"3","number of NO contacts for auxiliary contacts":"5","Type Of Voltage Of The Control Supply Voltage":"DC","contact rating of auxiliary contacts according to UL":"A600 / Q600","Identification Number And Letter For Switching Elements":"53 E","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Type Of Electrical Connection For Auxiliary And Control Circuit":"screw-type terminals","insulation voltage with degree of pollution 3 at AC rated value":"690 V","Design Of The Fuse Link For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 10 A","design of the miniature circuit breaker for short-circuit protection of the auxiliary circuit up to 230 V":"C characteristic: 6 A; 0.4 kA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$33.02","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/d6add6d13290b24e3cea5b00dbeda2d8.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=112342&mlfb=3RH2253-1BB40","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH2253-1BB40/alternatives.json"},"ai":{"faq":[{"question":"What are the key dimensions of this auxiliary contactor?","answer":"Width 45 mm, depth 117 mm, height 57.5 mm. Air gaps of 10 mm upward/downward/forward and 6 mm sideways are required for arc clearance."},{"question":"Does this part have RoHS compliance documentation?","answer":"The evidence includes a substance prohibition date of 10/01/2009, indicating RoHS compliance for that directive. No UL or IEC certifications are listed in the provided documentation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH2253-1BB40","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/3RH2253-1BB40 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}}