{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH7122-1AG00","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH7122-1AG00","canonicalUrl":"https://aoctrl.com/siemens/3RH7122-1AG00","factsUrl":"https://aoctrl.com/api/mcp/products/3RH7122-1AG00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS contactor relay, size S00, 2 NO + 2 NC auxiliary contacts, AC coil, screw terminals, IP20 front, snap-on DIN rail mounting.","salesMarkdown":"The Siemens 3RH7122-1AG00 is a SIRIUS contactor relay in size S00, carrying 2 normally-open and 2 normally-closed auxiliary contacts (22 E configuration). It is the control-circuit switching element — not a main power contactor — designed to switch signal loads, pilot devices, PLC inputs, and smaller control loads in a panel. The AC coil draws 27 VA pick-up and 5.4 VA holding. Contact reliability is specified for PLC-level signals: 17 V, 5 mA minimum switching capability. Rated operational current is 6 A at 24 V, 230 V, and 400 V AC; at 110 V it is 1 A, at 220 V it is 0.3 A, and at 690 V it is 1 A. The 6 A plateau across the common 24–400 V range covers most auxiliary and signal loads in a standard panel — solenoids, contactor coils, indicator lamps, and PLC inputs. The drop at 220 V and the 1 A limit at 690 V reflect the contact gap and arc extinction limits for that voltage class. The 45 mm width and 72 mm depth fit the standard S00 footprint. That covers most enclosure layouts without derating — no need to reserve a specific orientation slot. Screw-type terminals accept 2x 0.5–1.5 mm² solid/stranded, 2x 0.75–2.5 mm², or 2x 4 mm². Finely stranded with ferrule is also supported (2x 0.5–1.5 mm², 2x 0.75–2.5 mm²). Standard 8 mm strip length, no special crimp tool needed beyond a common ferrule kit. IP20 on the front — finger-safe for the panel face, but not washdown-rated. Keep it inside the enclosure.","metaTitle":"Siemens 3RH7122-1AG00 SIRIUS Contactor Relay, 2NO+2NC, AC Co","metaDescription":"Siemens SIRIUS 3RH7122-1AG00 contactor relay, size S00. 2NO+2NC auxiliary contacts, AC coil. Rated 6 A at 24 V, 230 V, 400 V. Screw terminals, snap-on DIN rail. Active production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"72 mm","Width":"45 mm","Height":"57.5 mm","at 50 Hz":"0.8 ... 1.1","at 60 Hz":"0.85 ... 1.1","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":"36 V","at 60 Hz rated value":"36 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":"23 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,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1533809&mlfb=3RH7122-1AG00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH7122-1AG00/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source — 3RH2422-1AB00?","answer":"The 3RH2422-1AB00 is a different series (SIRIUS 3RH2) with a different coil voltage and possibly different terminal layout. While both are contactor relays with 2NO+2NC, the 3RH7122-1AG00 uses an AC coil and screw terminals; the 3RH2422-1AB00 may use a different coil voltage family. Do not assume a drop-in replacement without comparing the coil rating and terminal marking."},{"question":"What compliance documentation is available for 3RH7122-1AG00?","answer":"The part carries standard Siemens SIRIUS compliance: it is designed to meet IEC/EN 60947-5-1 for control circuit devices. RoHS and REACH declarations are available from Siemens documentation portals. The surge voltage resistance is rated at 23 kV, indicating basic insulation coordination for industrial environments."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH7122-1AG00","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/3RH7122-1AG00 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}}