{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH6122-1BW40","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH6122-1BW40","canonicalUrl":"https://aoctrl.com/siemens/3RH6122-1BW40","factsUrl":"https://aoctrl.com/api/mcp/products/3RH6122-1BW40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS contactor relay, size S00, 48 VDC coil, 2 NO + 2 NC auxiliary contacts, screw-type terminals, 35 mm DIN rail mount.","salesMarkdown":"## SIRIUS contactor relay, 48 VDC coil, 2NO+2NC It carries a 48 VDC coil, draws 4 W closing and holding power, and provides two normally-open and two normally-closed auxiliary contacts (22 E switching element designation). Rated operational currents span the voltage range: 6 A at 24 V, 3 A at 110 V, 1.2 A at 220 V, 10 A at 230 V, 3 A at 400 V, and 1 A at 690 V. The AC-12 rating at 6 A and DC-12/DC-13 ratings at 1 000 operations per hour define the switching duty for resistive and lightly inductive loads. Mechanical endurance is 30 000 000 cycles for the base relay, dropping to 10 000 000 cycles when an auxiliary switch block is added — still well above typical panel life. Surge voltage resistance is 6 kV, and the operating temperature range is -25 to +60 °C, with storage from -55 to +80 °C. Installation altitude is rated to 2 000 m above sea level. The screw-type 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, with equivalent AWG sizes 2 x (20 to 16), 2 x (18 to 14), or 2 x 12. Finely stranded wire with ferrule is supported at the same cross-sections. Strip length and torque values follow standard Siemens SIRIUS practice for size S00.","metaTitle":"Siemens 3RH6122-1BW40 SIRIUS Contactor Relay, 48 VDC, 2NO+2N","metaDescription":"Siemens 3RH6122-1BW40 SIRIUS contactor relay, size S00, 48 VDC coil, 2NO+2NC auxiliary contacts, screw terminals. Current production. Available to order. Request RFQ for pricing an","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"73 mm","Width":"45 mm","at AC":"10 000 1/h","at DC":"10 000 1/h","title":"3RH6122-1BW40","Height":"57.5 mm","Rated Value":"48 V","description":"Contactor relay, 2 NO + 2 NC, DC 48 V, size S00, screw terminal","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","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","Product Brand Name":"SIRIUS","Product Designation":"Contactor relay","at 24 V rated value":"6 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 690 V rated value":"1 A","Substance Prohibitance (Date)":"05/01/2012","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":"6 A","for AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 2x 12","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)","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","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","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,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/24a07ddb2ca7df55342bd88dccdeeb11.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=641370&mlfb=3RH6122-1BW40"},"ai":{"faq":[{"question":"What are the key ratings for the 3RH6122-1BW40?","answer":"The contactor relay has a 48 VDC coil drawing 4 W, 2 NO + 2 NC auxiliary contacts rated for 6 A at 24 V up to 10 A at 230 V AC, mechanical endurance of 30 000 000 cycles, and surge voltage resistance of 6 kV."},{"question":"Where can I buy the 3RH6122-1BW40 and get current pricing?","answer":"The 3RH6122-1BW40 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit a request for quotation."},{"question":"Will the 3RH6122-1BW40 fit a panel specified around the 3RH6131-1BF40?","answer":"Both are size S00 SIRIUS contactor relays with the same 45 mm width and 35 mm DIN rail mounting, so the 3RH6122-1BW40 will drop into the same panel footprint without rewiring. The main difference is the coil voltage: 48 VDC here versus the 3RH6131-1BF40's 110 VDC coil."},{"question":"What compliance documentation does the 3RH6122-1BW40 carry?","answer":"The part is RoHS compliant with a substance prohibitance date of 05/01/2012, and carries standard SIRIUS approvals including UL, CSA, CE, and IEC for industrial control applications."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH6122-1BW40","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/3RH6122-1BW40 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}