{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1140-1BB40-ZW98","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1140-1BB40-ZW98","canonicalUrl":"https://aoctrl.com/siemens/3RH1140-1BB40-ZW98","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1140-1BB40-ZW98","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary contactor, size S00, 24 VDC coil, 4 instantaneous NO contacts, screw and snap-on mounting, IP20 front protection.","salesMarkdown":"## SIRIUS S00 auxiliary contactor — 4 NO, 24 VDC coil The coil draws 3.2 W closing and holding. Screw and snap-on mounting to DIN rail fits standard 45 mm width enclosures. The IP20 front face suits protected panel environments. ## Contact ratings by voltage The auxiliary contacts are rated by utilization voltage: 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, 2 A at 500 V, and 1 A at 690 V. These are thermal current ratings for switching auxiliary loads — not motor starting duty. The 6 kV rated surge voltage provides basic insulation coordination for control circuits. Wire termination accepts solid conductors: 2× (0.5 to 1.5 mm²), 2× (0.75 to 2.5 mm²), or 2× 4 mm². AWG equivalents are 2× (20 to 16), 2× (18 to 14), or 1× 12. The screw terminals are sized for panel wiring with standard ferrule or solid conductors. Pollution degree 3 means the contactor tolerates conductive pollution in industrial control panels. Shock resistance is 10g at 5 ms and 5g at 10 ms.","metaTitle":"Siemens 3RH1140-1BB40-ZW98 SIRIUS Auxiliary Contactor, 24 VD","metaDescription":"Siemens SIRIUS 3RH1140-1BB40-ZW98 auxiliary contactor, 24 VDC coil, 4 instantaneous NO contacts, size S00. Rated 10 A at 24 V. IP20 front, screw/snap-on mount. Current lifecycle st","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"72 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), 2x 4 mm²","Width":"45 mm","Height":"57.5 mm","Rated Value":"24 V","Initial Value":"0.8","During Storage":"-55 ... +80 °C","Leading Contact":"0","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","During Transport":"-55 ... +80 °C","Fastening Method":"screw and snap-on mounting","Full-Scale Value":"1.1","Shock Resistance":"10g / 5 ms and 5g / 10 ms","Delayed Switching":"0","Lagging Switching":"0","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","Product Brand Name":"SIRIUS","Contact Reliability":"one incorrect switching operation of 100 million switching operations (17 V, 1 mA)","Degree Of Pollution":"3","Product Designation":"Auxiliary contactor","at 24 V rated value":"10 A","Of Contactor Typical":"30 000 000","at 110 V rated value":"1 A","at 220 V rated value":"0.27 A","at 230 V rated value":"6 A","at 400 V rated value":"3 A","at 500 V rated value":"2 A","at 690 V rated value":"1 A","Instantaneous Contact":"4","For Auxiliary Contacts":"0","Make-Before-Break Switching":"0","Substance Prohibitance (Date)":"07/01/2006","protection class IP on the front":"IP20","Product Extension Auxiliary Switch":"Yes","closing power of magnet coil at DC":"3.2 W","holding power of magnet coil at DC":"3.2 W","Surge Voltage Resistance Rated Value":"6 kV","at AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","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)","Touch Protection Against Electrical Shock":"finger-safe","with low demand rate according to SN 31920":"40 %","Of Auxiliary Contacts Instantaneous Contact":"0","with high demand rate according to SN 31920":"75 %","number of NC contacts for auxiliary contacts":"0","number of NO contacts for auxiliary contacts":"4","Type Of Voltage Of The Control Supply Voltage":"DC","Identification Number And Letter For Switching Elements":"40 E","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Required Spacing With Side-By-Side Mounting At The Side":"0 mm","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","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","Of The Contactor With Added Electronically Optimized Auxiliary Switch Block Typical":"5 000 000","Design Of The Fuse Link For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 10 A"}},"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=487758&mlfb=3RH1140-1BB40-ZW98","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1140-1BB40-ZW98/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 3RH1140-1BB40-ZW98 and how do I get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What is the depth of the 3RH1140-1BB40-ZW98?","answer":"The depth is 72 mm. Width is 45 mm and height is 57.5 mm, fitting the standard S00 contactor footprint."},{"question":"What wire sizes does the 3RH1140-1BB40-ZW98 accept?","answer":"Solid conductors: 2× (0.5 to 1.5 mm²), 2× (0.75 to 2.5 mm²), or 2× 4 mm². AWG equivalents: 2× (20 to 16), 2× (18 to 14), or 1× 12."},{"question":"What compliance documentation is available for the 3RH1140-1BB40-ZW98?","answer":"RoHS compliance is documented with a substance prohibition date of July 1, 2006. The SIRIUS series typically provides CE, UL, and CSA certifications — confirm specific certs with the datasheet at order."},{"question":"Will the 3RH1140-1BB40-ZW98 drop into a panel specified around the 3RH2140-1BP40?","answer":"Both are SIRIUS size S00 contactors with the same 45 mm width and screw/snap-on mounting. The 3RH1140-1BB40-ZW98 has a 24 VDC coil and 4 NO contacts; the 3RH2140-1BP40 has a different coil voltage and contact arrangement. Mechanical fit is the same, but verify coil voltage and contact configuration before substitution."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1140-1BB40-ZW98","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/3RH1140-1BB40-ZW98 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}}