{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH7122-1AF00","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH7122-1AF00","canonicalUrl":"https://aoctrl.com/siemens/3RH7122-1AF00","factsUrl":"https://aoctrl.com/api/mcp/products/3RH7122-1AF00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS contactor relay, S00 size, 3RH7122-1AF00, 2 NO + 2 NC auxiliary contacts, 6 A at 24 V / 230 V / 400 V, AC coil, screw-type terminals, IP20 front.","salesMarkdown":"This 3RH7122-1AF00 is a Siemens SIRIUS contactor relay in the S00 frame size — a compact switching block with 2 normally-open and 2 normally-closed auxiliary contacts. It's built to pilot larger contactors or handle signal-level switching in control circuits, with an AC coil that pulls in at 27 VA and holds at 5.4 VA. The contacts are rated for 6 A at 24 V, 230 V, and 400 V, and 1 A at 110 V and 690 V. That covers most control-voltage taps you'll find in a panel — 24 V for PLC outputs, 230 V for line-voltage interlocks, and 400 V for contactor coil pickups in 3-phase gear. Screw-type terminals accept 2x 0.5 to 2.5 mm² solid or stranded, or 2x 4 mm² solid. The contact reliability is specified for PLC-level signals — 17 V, 5 mA — so you can wire this directly to a digital input card without worrying about oxide films causing intermittent faults. The S00 footprint is 45 mm wide, 57.5 mm tall, and 72 mm deep — tight enough to pack several relays across a single DIN-rail section. That means you can orient it to match gland-plate entries or cable duct runs without worrying about derating the contacts. IP20 on the front — finger-safe for open panels, but keep it inside an enclosure where washdown or dust isn't a concern. This relay lives in control circuits — piloting SIRIUS contactors like the 3RT series, or switching signal loads from PLCs, pushbuttons, and sensors. The S00 size matches the smallest contactor frame in the SIRIUS family, so it shares the same DIN-rail footprint and terminal spacing. Operating temperature range is -10 to +55 °C during operation, storage from -25 to +70 °C. That's fine for most indoor panel environments — no special ventilation required unless you're packing it next to a heat source. Installation altitude is limited to 2 000 m above sea level. Above that, you'd need to derate the insulation or use a different variant — but for 95% of industrial sites, that's not a constraint.","metaTitle":"Siemens 3RH7122-1AF00 SIRIUS Contactor Relay, 2NO+2NC, 6A at","metaDescription":"Siemens SIRIUS 3RH7122-1AF00 contactor relay, S00 size, 2 NO + 2 NC auxiliary contacts. Rated 6 A at 24 V, 230 V, 400 V. Screw terminals, AC coil. Active production. DIN rail mount","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"72 mm","Width":"45 mm","title":"3RH7122-1AF00","Height":"57.5 mm","at 50 Hz":"0.8 ... 1.1","at 60 Hz":"0.85 ... 1.1","description":"Contactor relay 2NO2NC AC 110V 50/60Hz size S00, screw terminal","During Storage":"-25 ... +70 °C","lifecycle_stage":"current","During Operation":"-10 ... +55 °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 ... 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","at 110 V rated value":"1 A","at 220 V rated value":"0.3 A","at 230 V rated value":"6 A","at 400 V rated value":"6 A","at 50 Hz rated value":"110 V","at 60 Hz rated value":"110 V","at 690 V rated value":"1 A","protection class IP on the front":"IP20","Product Extension Auxiliary Switch":"Yes","Surge Voltage Resistance Rated Value":"25 kV","operating frequency at DC-13 maximum":"1 000 1/h","shock resistance with sine pulse at AC":"15g / 5 ms, 8g / 10 ms","Finely Stranded With Core End Processing":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Contact Reliability Of Auxiliary Contacts":"acceptability for PLC control (17 V, 5 mA)","apparent holding power of magnet coil at AC":"5.4 VA","apparent pick-up power of magnet coil at AC":"27 VA","number of NC contacts for auxiliary contacts":"2","number of NO contacts for auxiliary contacts":"2","Type Of Voltage Of The Control Supply Voltage":"AC","shock resistance at rectangular impulse at AC":"10g / 5 ms, 5g / 10 ms","Inductive Power Factor With Closing Power Of The Coil":"0.8","Identification Number And Letter For Switching Elements":"22 E","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Inductive Power Factor With The Holding Power Of The Coil":"0.27","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"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/9d6d0182efa36e76d184606c375fcf0b.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1533808&mlfb=3RH7122-1AF00"},"ai":{"faq":[{"question":"What is the depth of the 3RH7122-1AF00?","answer":"72 mm. That's the overall depth including the terminals. Width is 45 mm, height is 57.5 mm."},{"question":"Will the 3RH7122-1AF00 drop into a panel designed for the 3RT7016-1AF01?","answer":"Both parts share the S00 frame size and mount on 35 mm DIN rail, so the footprint is the same. The 3RH7122-1AF00 is a contactor relay with 2 NO + 2 NC auxiliary contacts, while the 3RT7016-1AF01 is a power contactor. Wiring the control circuit matches — same terminal spacing and screw-type connections — but the power contactor has main poles the relay lacks. If the panel only needs auxiliary switching, the relay fits without rewiring."},{"question":"What compliance documentation is available for the 3RH7122-1AF00?","answer":"The SIRIUS product line carries standard Siemens compliance with relevant EU directives (CE marking) and international standards. Specific documentation like RoHS and REACH declarations is available through the manufacturer's documentation portal. For exact certification details (UL, CSA, IEC), refer to the product datasheet or contact the supplier with your RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH7122-1AF00","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/3RH7122-1AF00 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}}