{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH7122-1AP00","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH7122-1AP00","canonicalUrl":"https://aoctrl.com/siemens/3RH7122-1AP00","factsUrl":"https://aoctrl.com/api/mcp/products/3RH7122-1AP00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS contactor relay, size S00, 3RH7122-1AP00, 2 NO + 2 NC auxiliary contacts, AC 230 V 50/60 Hz coil, screw-type terminals, IP20 front, snap-on 35 mm DIN rail.","salesMarkdown":"The Siemens SIRIUS 3RH7122-1AP00 is a size S00 contactor relay — essentially a pilot-duty switching block with 2 normally-open and 2 normally-closed auxiliary contacts (configuration 22 E). It's the signal-level interface between a PLC output or pushbutton and the main contactor coil, or it can switch small loads directly. The AC coil is wound for 230 V at both 50 Hz and 60 Hz, with a pickup draw of 27 VA and a holding draw of 5.4 VA. The screw-type terminals accept up to 2x 4 mm² solid or 2x 2.5 mm² stranded, which is generous for control wiring. The auxiliary contacts are rated for 6 A at 24 V, 230 V, and 400 V AC, but only 1 A at 110 V and 690 V, and 0.3 A at 220 V. The 1 A at 690 V covers uncommon high-voltage control circuits. The contacts are also rated for DC-13 duty at up to 1 000 operations per hour, which covers solenoid loads with inductive kickback. A critical detail for PLC integration: the auxiliary contacts are specified for \"acceptability for PLC control (17 V, 5 mA)\" — meaning the silver-alloy contacts reliably switch dry logic-level signals without needing gold plating or a separate interface relay. This saves a component and a wiring step when feeding back status to a 24 V DC input card. In practice, this means the relay can survive switching transients on a 400 V line without flashover — important for long cable runs in industrial environments. Dimensions are 45 mm wide, 57.5 mm tall, and 72 mm deep — the width is the critical number for DIN-rail budgeting: it occupies one standard 45 mm module. Operating temperature range is -10 to +55 °C, storage from -25 to +70 °C. Shock resistance is 15g for 5 ms (sine pulse) and 10g for 5 ms (rectangular pulse), which is adequate for most machine-mounted panels but not for direct mounting on a vibrating press. Maximum installation altitude is 2 000 m above sea level — standard for most industrial sites. Above that, derate the switching capacity per IEC 60947. There's no need to stockpile or search surplus channels.","metaTitle":"Siemens SIRIUS 3RH7122-1AP00 Contactor Relay, 2NO+2NC, AC Co","metaDescription":"Siemens SIRIUS contactor relay 3RH7122-1AP00, size S00, 2NO+2NC, AC coil 230V 50/60Hz, screw terminals, IP20, snap-on 35mm 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","title":"3RH7122-1AP00","Height":"57.5 mm","at 50 Hz":"0.8 ... 1.1","at 60 Hz":"0.85 ... 1.1","description":"Contactor relay 2NO2NC AC 230V 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":"230 V","at 60 Hz rated value":"230 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":"27 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/1335a1787a64aac36dd0be9d563a552d.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1533812&mlfb=3RH7122-1AP00"},"ai":{"faq":[{"question":"What is the closest functional alternative to 3RH7122-1AP00?","answer":"The 3RT7014-1AP01 is a size S00 contactor with the same coil voltage and screw terminals, but it includes a main power pole (3-pole) in addition to auxiliary contacts. The 3RH7122-1AP00 is a pure contactor relay (no main poles), so it's a direct swap only if your circuit doesn't need the main power switching. The 3RH2422-1AB00 is a smaller 4-pole relay but with a different footprint and lower ratings."},{"question":"What are the key dimensions for panel layout?","answer":"Width is 45 mm (one standard module), height is 57.5 mm, depth is 72 mm. The 45 mm width is the critical dimension for DIN-rail space planning."},{"question":"Will 3RH7122-1AP00 drop into a panel designed for 3RT7014-1AP01?","answer":"Yes, both are size S00 and mount on 35 mm DIN rail with the same 45 mm width and screw-terminal pattern. The 3RH7122-1AP00 has no main power poles, so it will physically fit but won't switch motor loads — only auxiliary circuits."},{"question":"What compliance documentation is available for 3RH7122-1AP00?","answer":"As a Siemens SIRIUS product, it carries CE marking for the European market and is designed to meet IEC 60947 standards. UL and CSA listings are typical for this series, but specific certification marks should be verified against the nameplate or Siemens declaration of conformity."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH7122-1AP00","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/3RH7122-1AP00 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}}