{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH2422-1BC40","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH2422-1BC40","canonicalUrl":"https://aoctrl.com/siemens/3RH2422-1BC40","factsUrl":"https://aoctrl.com/api/mcp/products/3RH2422-1BC40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary contactor, size S00, 3RH2422-1BC40, 2 NO instantaneous contacts, 24 VDC coil, 10 A rated, screw and snap-on 35 mm DIN rail mounting.","salesMarkdown":"## SIRIUS 3RH2422-1BC40 — Auxiliary Contactor, Size S00, 24 VDC Coil The Siemens SIRIUS 3RH2422-1BC40 is an auxiliary contactor in the compact S00 frame size, carrying 2 instantaneous normally-open contacts rated 10 A at 24 V. The 10 A rating at 24 V is the resistive (AC-1 / DC-1) load curve for the auxiliary contacts — it switches signal-level loads, PLC inputs, or small relay coils without derating at that voltage. At 230 V the same contacts carry 10 A, but at 400 V they drop to 3 A, and at 600 V to 0.26 A; that's the arc-extinction limit in air at higher potentials. The 2 instantaneous contacts (NO) close on coil energization with no intentional delay — used for feedback to a controller or to interlock a starter. Mechanical endurance is 5 million switching cycles typical, and the AC switching rate is 10,000 operations per hour — that's about 2.8 operations per second sustained, which covers high-speed pick-and-place or packaging machine applications. The DC arcing time of 7–13 ms is the interval the arc persists on DC break; for DC control circuits, verify the load inductance doesn't exceed the contactor's making/breaking capacity at the operating voltage. The S00 footprint is 57.5 mm high, 90 mm wide, 73 mm deep — it occupies roughly the same DIN-rail pitch as a miniature circuit breaker. The screw terminals accept 2 x 0.5–1.5 mm², 2 x 0.75–2.5 mm², or 2 x 4 mm² solid/stranded — sufficient for control wiring up to 12 AWG.","metaTitle":"Siemens 3RH2422-1BC40 SIRIUS Auxiliary Contactor, 2 NO, 24 V","metaDescription":"Siemens SIRIUS 3RH2422-1BC40 auxiliary contactor, size S00, 2 instantaneous NO contacts, 24 VDC coil, 10 A rated. Screw and snap-on 35 mm DIN rail. Current lifecycle stage, sourced","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"73 mm","Width":"90 mm","at AC":"10 000 1/h","at DC":"7 ... 13 ms","title":"3RH2422-1BC40","Height":"57.5 mm","Upwards":"10 mm","Forwards":"10 mm","Downwards":"10 mm","Arcing Time":"10 ... 15 ms","At The Side":"6 mm","Rated Value":"30 V","description":"Contactor relay, latched, 2 NO + 2 NC, 30 V DC, Size S00, screw terminal","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","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":"5 000 000","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":"5 000 000","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,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/d8711880cfc35f13093750637f05d036.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=123858&mlfb=3RH2422-1BC40"},"ai":{"faq":[{"question":"What is the depth of 3RH2422-1BC40?","answer":"73 mm. That's the dimension from the DIN-rail mounting surface to the front of the contactor body — relevant for enclosure depth clearance."},{"question":"What is the width of 3RH2422-1BC40?","answer":"90 mm. The S00 frame width is 90 mm, which determines the DIN-rail pitch and side clearance requirement of 6 mm."},{"question":"Will 3RH2422-1BC40 drop into a panel specified around 3RH2422-1AB00?","answer":"Yes, both are S00 frame auxiliary contactors with the same physical dimensions (57.5 x 90 x 73 mm) and DIN-rail mounting. The difference is the coil voltage: 1BC40 is 24 VDC, 1AB00 is a different coil variant. If the panel wiring and control voltage match 24 VDC, it's a direct mechanical swap."},{"question":"Where can I buy 3RH2422-1BC40 and how is it quoted?","answer":"This part is sourced to order through independent distribution. Submit an RFQ for current availability and pricing — confirmed at quote time, not a published figure."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH2422-1BC40","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/3RH2422-1BC40 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}}