{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1244-1AP00","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1244-1AP00","canonicalUrl":"https://aoctrl.com/siemens/3RH1244-1AP00","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1244-1AP00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary contactor, size S00, 4 NO instantaneous contacts, screw and snap-on mounting, 45 mm width, 57.5 mm height, 111 mm depth.","salesMarkdown":"It's rated for 10 A at 24 V, with a switching capacity that drops to 1 A at 690 V — so the contact rating is voltage-dependent, and the 24 V figure is the one that drives the real load capability in a typical 24 VDC control circuit. The front is IP20 finger-safe. Wiring accepts solid conductors: 2x 0.5...1.5 mm², 2x 0.75...2.5 mm², or 2x 4 mm² per terminal — enough for paralleled control leads or a single heavy feed. ## Contact ratings and duty The 4 NO contacts are instantaneous — no leading, lagging, or delayed switching. Rated operational current at 24 V is 10 A; at 110 V it's 1 A; at 230 V it's 6 A; at 400 V it's 3 A; at 500 V it's 2 A; at 690 V it's 1 A. The 50 Hz rated voltage is 230 V, 60 Hz rated voltage is 230 V. Mechanical endurance is 10,000,000 operations typical. Pollution degree 3 (industrial environment). Shock resistance: 10g / 5 ms and 5g / 10 ms. RoHS compliance date is 01.07.2006.","metaTitle":"Siemens SIRIUS 3RH1244-1AP00 Auxiliary Contactor, 4 NO, S00,","metaDescription":"Siemens SIRIUS 3RH1244-1AP00 auxiliary contactor, size S00, 4 NO instantaneous contacts, rated 10A at 24V. Current lifecycle stage. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"111 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), 2x 4 mm²","Width":"45 mm","Height":"57.5 mm","at 50 Hz":"0.8 ... 1.1","at 60 Hz":"0.85 ... 1.1","1 Rated Value":"50 Hz","2 Rated Value":"60 Hz","Leading Contact":"0","lifecycle_stage":"current","Fastening Method":"screw and snap-on mounting","Shock Resistance":"10g / 5 ms and 5g / 10 ms","Delayed Switching":"0","Lagging Switching":"0","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","Product Brand Name":"SIRIUS","Degree Of Pollution":"3","Product Designation":"Auxiliary contactor","at 24 V rated value":"10 A","Of Contactor Typical":"10 000 000","at 110 V rated value":"1 A","at 220 V rated value":"0.27 A","at 230 V rated value":"6 A","at 400 V rated value":"3 A","at 50 Hz rated value":"230 V","at 500 V rated value":"2 A","at 60 Hz rated value":"230 V","at 690 V rated value":"1 A","Instantaneous Contact":"4","For Auxiliary Contacts":"0","Make-Before-Break Switching":"0","Substance Prohibitance (Date)":"01.07.2006 00:00:00","protection class IP on the front":"IP20","Ambient Temperature During Storage":"-55 ... +80 °C","Product Extension Auxiliary Switch":"No","reference code acc. to IEC 81346-2":"K","Ambient Temperature During Operation":"-25 ... +60 °C","Ambient Temperature During Transport":"-55 ... +80 °C","Surge Voltage Resistance Rated Value":"6 kV","at AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","operational current at AC-12 maximum":"10 A","with low demand rate acc. to SN 31920":"40 %","with high demand rate acc. to SN 31920":"75 %","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)","Touch Protection Against Electrical Shock":"finger-safe","Of Auxiliary Contacts Instantaneous Contact":"0","apparent holding power of magnet coil at AC":"4.6 V·A","apparent pick-up power of magnet coil at AC":"27 V·A","number of NC contacts for auxiliary contacts":"4","number of NO contacts for auxiliary contacts":"4","Type Of Voltage Of The Control Supply Voltage":"AC","B10 value with high demand rate acc. to SN 31920":"1 000 000; With 0.3 x Ie","Inductive Power Factor With Closing Power Of The Coil":"0.8","Identification Number And Letter For Switching Elements":"44 E","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Required Spacing With Side-By-Side Mounting At The Side":"0 mm","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=154922&mlfb=3RH1244-1AP00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1244-1AP00/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source for 3RH1244-1AP00?","answer":"The 3RH2440-1AP00 is a peer in the same SIRIUS auxiliary contactor family, but it carries different contact configurations — verify your specific NO/NC count and terminal arrangement before substituting."},{"question":"Will 3RH1244-1AP00 drop into a panel specified around 3RH2440-1AP00?","answer":"Both are size S00 with the same 45 mm width and snap-on DIN rail mounting, so the footprint is identical. The difference is in the contact arrangement — 3RH1244-1AP00 has 4 NO instantaneous contacts, while the 3RH2440-1AP00 may differ. Check your schematic before swapping."},{"question":"How do I get current pricing and availability for 3RH1244-1AP00?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commitment."},{"question":"What compliance documentation does Siemens provide for 3RH1244-1AP00?","answer":"The part carries a RoHS compliance date of 01.07.2006. Standard Siemens SIRIUS documentation includes the declaration of conformity and CE marking; specific UL or IEC certificates should be verified against the nameplate marking on the unit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1244-1AP00","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/3RH1244-1AP00 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}}