{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1344-1BF40-ZX95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1344-1BF40-ZX95","canonicalUrl":"https://aoctrl.com/siemens/3RH1344-1BF40-ZX95","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1344-1BF40-ZX95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RH1344-1BF40-ZX95 auxiliary contactor, 110 V DC coil, 4 NO instantaneous contacts, S00 frame size, screw and snap-on mounting, IP20 front protection.","salesMarkdown":"The Siemens SIRIUS 3RH1344-1BF40-ZX95 is a 4-pole auxiliary contactor in the S00 frame size, designed for control-circuit switching in industrial panels. The four contacts are all normally open (instantaneous, no delayed or lagging switching), rated for 10 A at 24 V, 6 A at 230 V, and 3 A at 400 V, so it handles typical PLC-level loads and small contactor coils without issue. Mounts via screw or snap-on onto a DIN rail, with the S00 footprint (45 mm wide, 57.5 mm tall, 111 mm deep). Wire termination accepts solid conductors: 2x (0.5...1.5 mm²), 2x (0.75...2.5 mm²), or 2x 4 mm² per terminal; AWG equivalents are 2x (20...16), 2x (18...14), and 1x 12. IP20 on the front protects against finger contact, not washdown — keep it inside a sealed cabinet. The 110 V DC coil is rated for continuous duty — the holding power stays at 3.2 W, so no external dropping resistor is needed. The mechanical life is 10 million operations typical; shock resistance is 10g / 5 ms and 5g / 10 ms, so it holds up on vibrating machinery like conveyors or compressors.","metaTitle":"Siemens SIRIUS 3RH1344-1BF40-ZX95 Auxiliary Contactor, 110 V","metaDescription":"Siemens SIRIUS 3RH1344-1BF40-ZX95 auxiliary contactor, 110 V DC coil, 4 NO contacts, S00 size, IP20, screw/snap-on mount. Current production. RFQ for price & lead time.","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","Rated Value":"110 V","Initial Value":"0.8","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","Full-Scale Value":"1.1","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 500 V rated value":"2 A","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","closing power of magnet coil at DC":"3.2 W","holding power of magnet coil at DC":"3.2 W","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","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":"DC","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","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=64801&mlfb=3RH1344-1BF40-ZX95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1344-1BF40-ZX95/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RH1344-1BF40-ZX95 and how do I get a price?","answer":"We source it to order against an RFQ. Send your quantity and target price, and we confirm availability and current pricing at quote time through our independent distribution channels."},{"question":"What is the closest functional second-source for 3RH1344-1BF40-ZX95?","answer":"The 3RH2140-1BP40 is a peer in the same SIRIUS family with a similar contact configuration, but it has a different coil voltage (230 V AC) and a different terminal layout. It will not drop into a panel wired for 110 V DC without rewiring the coil circuit and checking the auxiliary contact arrangement."},{"question":"What compliance documentation does Siemens provide for 3RH1344-1BF40-ZX95?","answer":"The part carries RoHS compliance with a substance prohibition date of July 1, 2006. It is designed to meet IEC/EN standards for auxiliary contactors (pollution degree 3, surge voltage 6 kV, IP20). UL/CSA listings are typical for the SIRIUS range but are not explicitly confirmed in this listing."},{"question":"What are the key ratings of 3RH1344-1BF40-ZX95?","answer":"Coil: 110 V DC, 3.2 W. Contacts: 4 NO, rated 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, 1 A at 690 V. Mechanical life: 10 million operations. Surge voltage: 6 kV. Pollution degree: 3. IP20 front. Size S00 (45 x 57.5 x 111 mm)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1344-1BF40-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/3RH1344-1BF40-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}}