{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH2122-1BM40-ZW97","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH2122-1BM40-ZW97","canonicalUrl":"https://aoctrl.com/siemens/3RH2122-1BM40-ZW97","factsUrl":"https://aoctrl.com/api/mcp/products/3RH2122-1BM40-ZW97","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RH2122-1BM40-ZW97 contactor relay, size S00, 2 NO instantaneous contacts, 24 VDC coil, screw and snap-on mounting onto 35 mm DIN rail.","salesMarkdown":"The Siemens 3RH2122-1BM40-ZW97 is a size S00 contactor relay from the SIRIUS family, fitted with two normally-open instantaneous contacts and a 24 VDC coil that draws 4 W both on closing and holding. The 73 mm depth and 45 mm width keep it compact inside a crowded enclosure, and the mounting position is flexible: you can rotate it ±180° on a vertical surface or tilt it ±22.5° forward and backward, which helps when routing wires around other gear. The contacts are rated for DC switching across a range of voltages: 10 A at 24 V, 4.7 A at 60 V, 3 A at 110 V, 1.2 A at 220 V, and 0.5 A at 440 V. These numbers define the resistive load curve the relay can break without excessive arcing — the arcing time sits between 10 and 15 ms for AC and 7 to 13 ms for DC, so you need that clearance around the relay to avoid flashover to adjacent components. Clearances: 10 mm upwards, forwards, downwards; 6 mm at sides. Pollution degree 3. Surge voltage resistance rated at 6 kV. For DC-12 duty the maximum operating frequency is 1,000 operations per hour — the lower figure reflects the longer arc extinction time on DC. Terminals accept solid or stranded conductors: 2 × (0.5 to 1.5 mm²), 2 × (0.75 to 2.5 mm²), or 2 × 4 mm². The product extension for auxiliary switches is supported — you can add more contact blocks on the side if the two built-in NO contacts aren't enough for your logic. Relative humidity minimum is 10%, so no special climate control is needed for typical panel environments.","metaTitle":"Siemens 3RH2122-1BM40-ZW97 Contactor Relay, Size S00, 2 NO,","metaDescription":"Siemens 3RH2122-1BM40-ZW97 contactor relay, size S00, 2 instantaneous NO contacts, 24 VDC coil, 4 W holding power. DIN rail mount. Current production. Quoted on request.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"73 mm","Width":"45 mm","at AC":"10 000 1/h","at DC":"7 ... 13 ms","Height":"58 mm","Upwards":"10 mm","Forwards":"10 mm","Downwards":"10 mm","Arcing Time":"10 ... 15 ms","At The Side":"6 mm","Rated Value":"220 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","Degree Of Pollution":"3","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 500 V rated value":"2 A","at 600 V rated value":"0.26 A","at 690 V rated value":"1 A","Instantaneous Contact":"2","Relative Humidity Minimum":"10 %","Substance Prohibitance (Date)":"10/01/2009","Product Extension Auxiliary Switch":"Yes","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","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","for AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 2x 12","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":"2","number of NO contacts for auxiliary contacts":"2","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":"22 E","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","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","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":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1684638&mlfb=3RH2122-1BM40-ZW97","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH2122-1BM40-ZW97/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH2122-1BM40-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/3RH2122-1BM40-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}}