{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1140-2AP00-ZW97","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1140-2AP00-ZW97","canonicalUrl":"https://aoctrl.com/siemens/3RH1140-2AP00-ZW97","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1140-2AP00-ZW97","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary contactor, 3RH1140-2AP00-ZW97, 4 NO contacts, size S00, screw and snap-on mounting, IP20 front protection.","salesMarkdown":"It is designed to switch control and signal circuits in motor control centers and distribution panels, typically driven by a larger power contactor or PLC output to extend the number of auxiliary contacts available for status feedback, interlocks, or logic wiring. The S00 footprint keeps it compact at 45 mm wide, 60 mm tall, and 73 mm deep — a common size that slots into existing panel layouts without re-spacing. The 4 NO contacts are rated for 10 A at 24 V, dropping to 6 A at 230 V and 3 A at 400 V. This means the contactor handles higher currents at lower control voltages, typical for pilot-duty signaling, and derates predictably as line voltage rises. The 6 kV rated surge voltage resistance indicates the contacts can withstand transient overvoltages common in industrial environments without welding or arcing over. Contact reliability is specified as one incorrect switching operation per 100 million cycles at 17 V, 1 mA — a dry-circuit rating that matters when switching low-energy signals like PLC inputs or sensor feedback. If the signal level is that low, the contacts will hold a clean circuit without needing gold plating or sealed relays. Pollution degree 3 confirms it tolerates conductive pollution typical of control rooms and light industrial floors. The auxiliary switch extension is supported, meaning you can add more contact blocks on top of the base 4 NO configuration without replacing the contactor. This is useful when a panel revision adds feedback points after the initial build. ## Integration notes Wire capacity is 2x (0.25 to 2.5 mm²) solid or stranded — standard for control wiring. Terminals accept ferruled conductors; strip length is typical for screw-clamp terminals. Shock resistance is rated at 10g for 5 ms and 5g for 10 ms, which is sufficient for mounting on a panel door or inside a cabinet near vibrating machinery like pumps or conveyors. The contactor will not drop out or chatter under normal industrial vibration.","metaTitle":"Siemens SIRIUS 3RH1140-2AP00-ZW97 Auxiliary Contactor, 4 NO,","metaDescription":"Siemens SIRIUS 3RH1140-2AP00-ZW97 auxiliary contactor, 4 NO contacts, size S00. Screw and snap-on mounting, IP20 front. Rated for 10 A at 24 V. Current production. Sourced to order","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"73 mm","Solid":"2x (0.25 ... 2.5 mm²)","Width":"45 mm","Height":"60 mm","at 50 Hz":"0.8 ... 1.1","at 60 Hz":"0.85 ... 1.1","1 Rated Value":"50 Hz","2 Rated Value":"60 Hz","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","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 50 Hz rated value":"230 V","at 500 V rated value":"2 A","at 60 Hz rated value":"230 V","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","Surge Voltage Resistance Rated Value":"6 kV","at AWG cables for auxiliary contacts":"2x (24 ... 14)","operational current at AC-12 maximum":"10 A","reference code according to IEC 81346-2":"K","Finely Stranded With Core End Processing":"2x (0.25 ... 1.5 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 %","Finely Stranded Without Core End Processing":"2x (0.25 ... 2.5 mm²)","Of Auxiliary Contacts Instantaneous Contact":"0","apparent holding power of magnet coil at AC":"4.6 VA","apparent pick-up power of magnet coil at AC":"27 VA","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":"AC","Inductive Power Factor With Closing Power Of The Coil":"0.8","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","Inductive Power Factor With The Holding Power Of The Coil":"0.27","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","Type Of Electrical Connection For Auxiliary And Control Circuit":"Cage Clamp 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=328302&mlfb=3RH1140-2AP00-ZW97","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1140-2AP00-ZW97/alternatives.json"},"ai":{"faq":[{"question":"What are the key dimensions of this auxiliary contactor?","answer":"Width is 45 mm, height is 60 mm, and depth is 73 mm. It is a size S00 footprint that fits standard DIN-rail spacing."},{"question":"What wire sizes does the terminal accept?","answer":"Each terminal accepts 2 conductors of 0.25 to 2.5 mm² solid or stranded wire. Use ferrules for stranded conductors to avoid stray strands."},{"question":"Can this contactor be used as a direct drop-in replacement for the 3RT1017-1AP01?","answer":"The 3RH1140-2AP00-ZW97 is an auxiliary contactor with 4 NO contacts, while the 3RT1017-1AP01 is a power contactor with a coil and main contacts. They serve different functions — the 3RH1140 extends auxiliary contacts from a power contactor or PLC, not replace it. Panel wiring and function differ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1140-2AP00-ZW97","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/3RH1140-2AP00-ZW97 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}}