{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1344-1AN20-ZX95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1344-1AN20-ZX95","canonicalUrl":"https://aoctrl.com/siemens/3RH1344-1AN20-ZX95","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1344-1AN20-ZX95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary contactor, 3RH1344-1AN20-ZX95, 4 NO instantaneous contacts, size S00, 45 mm width, screw and snap-on DIN rail mounting, IP20 front.","salesMarkdown":"The Siemens 3RH1344-1AN20-ZX95 is a SIRIUS auxiliary contactor, size S00, carrying 4 normally-open instantaneous contacts and no delayed, leading, lagging, or make-before-break switching contacts. It is designed to switch control signals and auxiliary loads in motor starter and contactor assemblies, not main power. Mechanical endurance is rated at 10,000,000 typical switching operations, with contact reliability specified as one incorrect switching operation per 100 million at 17 V, 1 mA — a low-level signal rating that matters for PLC inputs and electronic loads. Thermal current at 24 V is 10 A; at 230 V it drops to 6 A, and at 690 V to 1 A. These are the AC switching limits for the auxiliary contacts under the rated voltage. Shock resistance is 10g / 5 ms and 5g / 10 ms, sufficient for normal machinery vibration but not extreme shock loads. No official successor has been announced, and no direct replacement is needed — the 3RH1344-1AN20-ZX95 is the active variant for its contact configuration. The -ZX95 suffix indicates a special version; verify the exact order code against your BOM to ensure the contact arrangement (4 NO, no NC) matches your schematic. Solid conductor cross-sections accepted: 2x (0.5... 1.5 mm²), 2x (0.75... 2.5 mm²), and 2x 4 mm². This covers standard control wiring from signal-level to moderate power auxiliary circuits. No auxiliary switch extension is available on this variant.","metaTitle":"Siemens 3RH1344-1AN20-ZX95 SIRIUS Auxiliary Contactor, 4 NO","metaDescription":"Siemens 3RH1344-1AN20-ZX95 SIRIUS auxiliary contactor, 4 instantaneous NO contacts, size S00, 45 mm wide, screw/snap-on DIN rail mount, IP20 front. Current production.","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","During Storage":"-55 ... +80 °C","Leading Contact":"0","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","During Transport":"-55 ... +80 °C","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","Contact Reliability":"one incorrect switching operation of 100 million switching operations (17 V, 1 mA)","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":"220 V","at 500 V rated value":"2 A","at 60 Hz rated value":"220 V","at 690 V rated value":"1 A","Instantaneous Contact":"4","For Auxiliary Contacts":"0","Make-Before-Break Switching":"0","Substance Prohibitance (Date)":"07/01/2006","protection class IP on the front":"IP20","Product Extension Auxiliary Switch":"No","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","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)","Touch Protection Against Electrical Shock":"finger-safe","with low demand rate according to SN 31920":"40 %","Of Auxiliary Contacts Instantaneous Contact":"0","apparent holding power of magnet coil at AC":"4.6 VA","apparent pick-up power of magnet coil at AC":"27 VA","with high demand rate according to SN 31920":"75 %","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","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=439132&mlfb=3RH1344-1AN20-ZX95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1344-1AN20-ZX95/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source — 3RT1016-1AN22?","answer":"The 3RT1016-1AN22 is a power contactor, not an auxiliary contactor. While both are size S00 and share the same DIN-rail footprint, the 3RT1016-1AN22 carries main power contacts and a coil, whereas the 3RH1344-1AN20-ZX95 is an auxiliary contactor with 4 NO contacts only. They are not drop-in replacements without rewiring the control circuit."},{"question":"What is the depth of this component?","answer":"The depth is 111 mm, with a width of 45 mm and height of 57.5 mm."},{"question":"Will 3RH1344-1AN20-ZX95 drop into a panel specified around 3RT1016-1AN22 without rewiring?","answer":"Both are size S00 and mount on the same DIN-rail footprint, so the mechanical fit is identical. However, the 3RT1016-1AN22 is a power contactor with a coil and main contacts; the 3RH1344-1AN20-ZX95 is an auxiliary contactor with 4 NO contacts only. The wiring and function are completely different — you cannot swap one for the other without redesigning the control circuit."},{"question":"What compliance documentation does this brand provide?","answer":"The part carries a substance prohibitance date of 07/01/2006, indicating RoHS compliance from that date. The SIRIUS series typically includes CE, UL, CSA, and IEC certifications; specific approval marks should be confirmed on the nameplate or via the manufacturer's declaration of conformity."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1344-1AN20-ZX95","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/3RH1344-1AN20-ZX95 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}}