{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH2140-2AP00-ZW97","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH2140-2AP00-ZW97","canonicalUrl":"https://aoctrl.com/siemens/3RH2140-2AP00-ZW97","factsUrl":"https://aoctrl.com/api/mcp/products/3RH2140-2AP00-ZW97","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary contactor, size S00, 4 NO instantaneous contacts, screw and snap-on mounting on 35 mm DIN rail, 73 x 45 x 70 mm.","salesMarkdown":"The Siemens 3RH2140-2AP00-ZW97 is a SIRIUS auxiliary contactor in size S00, carrying 4 normally-open instantaneous contacts. It switches control and signal circuits in motor starter and contactor assemblies — the NO contacts handle pilot duty, PLC inputs, or interlocking logic where the main contactor's auxiliary block is already full. Dimensions are 73 mm deep, 45 mm wide, 70 mm high, with a 10 mm clearance required on all sides (upwards, downwards, forwards, and 6 mm at the side) for arc dissipation and airflow. The 4 NO contacts are rated for 10 A at 230 V AC (50/60 Hz), which covers most 24–230 V AC control circuits in a panel. At 24 V DC the contacts carry 10 A; at 60 V DC it drops to 4.7 A, and at 110 V DC to 3 A — the DC derating curve is steep, so confirm your DC load voltage against the table before committing the BOM line. For higher AC voltages the contact rating steps down: 3 A at 400 V, 2 A at 500 V, 1 A at 690 V, and 0.26 A at 600 V. These are the maximum continuous currents the NO contacts can make and break at those voltages — a 690 V motor control circuit drawing 0.8 A through the auxiliary contact would exceed the 1 A limit and risk contact welding. Arcing time is 10–15 ms at AC and 4–15 ms at DC, with a maximum switching frequency of 10 000 operations per hour at DC. The mechanical life is typical 30 million operations — the electrical life will be lower and depends on the switched load. The substance prohibition date of 10/01/2009 refers to RoHS compliance — the part meets the 2009 substance restrictions. Strip length is 8 mm for a reliable connection under the cage. The 4 NO contacts are all instantaneous — no timed or delayed auxiliary contacts on this variant. If your circuit needs a delayed break or make, you need a different order code from the 3RH21 family.","metaTitle":"Siemens 3RH2140-2AP00-ZW97 SIRIUS Auxiliary Contactor","metaDescription":"Siemens 3RH2140-2AP00-ZW97 SIRIUS auxiliary contactor, size S00, 4 instantaneous NO contacts. Screw and snap-on mounting on 35 mm DIN rail.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"73 mm","Width":"45 mm","at AC":"4 ... 15 ms","at DC":"10 000 1/h","Height":"70 mm","Upwards":"10 mm","Forwards":"10 mm","at 50 Hz":"0.8 ... 1.1","at 60 Hz":"0.85 ... 1.1","Downwards":"10 mm","Arcing Time":"10 ... 15 ms","At The Side":"6 mm","1 Rated Value":"50 Hz","2 Rated Value":"60 Hz","During Storage":"-55 ... +80 °C","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail","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 ... 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":"30 000 000","at 110 V rated value":"3 A","at 220 V rated value":"1.2 A","at 230 V rated value":"10 A","at 400 V rated value":"3 A","at 440 V rated value":"0.5 A","at 50 Hz rated value":"230 V","at 500 V rated value":"2 A","at 60 Hz rated value":"230 V","at 600 V rated value":"0.26 A","at 690 V rated value":"1 A","Instantaneous Contact":"4","Relative Humidity Minimum":"10 %","Substance Prohibitance (Date)":"10/01/2009","Product Extension Auxiliary Switch":"Yes","Surge Voltage Resistance Rated Value":"6 kV","at AWG cables for auxiliary contacts":"2x (20 ... 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 ... 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 %","Finely Stranded Without Core End Processing":"2x (0.5 ... 2.5 mm²)","apparent holding power of magnet coil at AC":"5.7 VA","apparent pick-up power of magnet coil at AC":"37 VA","with high demand rate according to SN 31920":"73 %","number of NO contacts for auxiliary contacts":"4","Type Of Voltage Of The Control Supply Voltage":"AC","contact rating of auxiliary contacts according to UL":"A600 / Q600","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","Inductive Power Factor With The Holding Power Of The Coil":"0.25","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","Type Of Electrical Connection For Auxiliary And Control Circuit":"spring-loaded 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","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":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/0bce96ea1a6dd7b629c42da8f01b84c0.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=165318&mlfb=3RH2140-2AP00-ZW97","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH2140-2AP00-ZW97/alternatives.json"},"ai":{"faq":[{"question":"Is 3RH2140-2AP00-ZW97 equivalent to any other contactor relay?","answer":"The closest functional peer within the SIRIUS family is the 3RH2131-1AH00, which carries 2 NO + 2 NC contacts instead of the 4 NO configuration on this part. The 3RH2122-1AC60 has 2 NO + 2 NC as well. If your circuit requires only NO contacts, this 4 NO variant is the correct choice; if you need a mix of NO and NC, one of the other order codes fits better."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH2140-2AP00-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/3RH2140-2AP00-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}}