{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH2122-1BF40-ZW97","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH2122-1BF40-ZW97","canonicalUrl":"https://aoctrl.com/siemens/3RH2122-1BF40-ZW97","factsUrl":"https://aoctrl.com/api/mcp/products/3RH2122-1BF40-ZW97","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RH2122-1BF40-ZW97 contactor relay, Size S00, 110 V AC/DC coil, 2 NO + 2 NC instantaneous contacts, screw and snap-on 35 mm DIN rail mounting, 45 mm width, 73 mm depth.","salesMarkdown":"The Siemens 3RH2122-1BF40-ZW97 is a Size S00 contactor relay from the SIRIUS family, built for switching auxiliary circuits in motor control centers and panel applications. The coil is rated at 110 V AC/DC with a pickup threshold of 0.8 x rated value and a dropout ceiling of 1.1 x rated value — meaning it pulls in reliably at 88 V and releases above 121 V, a standard hysteresis for noise immunity in industrial environments. ## Contact Ratings and Duty The 2 NO + 2 NC instantaneous contacts are rated for switching at various DC voltage levels: 10 A at 24 V, 4.7 A at 60 V, 3 A at 110 V, 1.2 A at 220 V, 0.5 A at 440 V, 0.26 A at 600 V. For AC loads, the contacts handle 10 A at 230 V, 3 A at 400 V, 2 A at 500 V, and 1 A at 690 V. These are the make/break capacities for the auxiliary contacts — not the main power path, but the control signals, interlocks, and status feedback loops that keep a line running. The mechanical service life is typical 30 million operating cycles, with a maximum switching frequency of 10,000 operations per hour at AC and 1,000 per hour at DC-12 duty. RoHS compliance is confirmed with a substance prohibition date of 10/01/2009, covering the EU RoHS directive. Operating temperature range is -25 to +60 °C, storage -55 to +80 °C, with relative humidity from 10 % upward. The coil draws 4 W during both closing and holding — a consistent power draw that simplifies thermal budgeting in a densely packed panel. ## Panel Integration Wiring terminals accept 2 x (0.5 to 1.5 mm²), 2 x (0.75 to 2.5 mm²), or 2 x 4 mm² solid or stranded conductors — no special ferrules required for standard control wiring.","metaTitle":"Siemens 3RH2122-1BF40-ZW97 Contactor Relay, Size S00, 110 V","metaDescription":"Siemens 3RH2122-1BF40-ZW97 contactor relay, Size S00, 110 V coil, 2 NO+2 NC contacts. Screw and snap-on 35 mm DIN rail mounting. Rated for 10 A at 24 V, 3 A at 110 V. Available to","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":"110 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":"https://cdn.aoctrl.com/82bc38a968a88d7c18a1e99aa20db9b0.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1684633&mlfb=3RH2122-1BF40-ZW97","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH2122-1BF40-ZW97/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RH2122-1BF40-ZW97 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 through this listing."},{"question":"What is 3RH2122-1BF40-ZW97's listed depth (73 mm) on this component line?","answer":"The depth is 73 mm, with a width of 45 mm and height of 58 mm. Clearance requirements are 10 mm upward, 10 mm forward, 10 mm downward, and 6 mm at the side."},{"question":"Will 3RH2122-1BF40-ZW97 drop into a panel that was specified around 3RH2122-1BW40 without rewiring?","answer":"Yes, both are Size S00 contactor relays with the same 45 mm width and 35 mm DIN rail mounting. The terminal wiring capacity is identical (2 x 0.5 to 2.5 mm²). The main difference is the coil voltage — the 1BW40 variant uses a different coil rating, so verify the control voltage matches before installation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH2122-1BF40-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/3RH2122-1BF40-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}}