{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1344-1AU00-ZW96","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1344-1AU00-ZW96","canonicalUrl":"https://aoctrl.com/siemens/3RH1344-1AU00-ZW96","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1344-1AU00-ZW96","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary contactor, 3RH1344-1AU00-ZW96, size S00, 4 NO instantaneous contacts, screw and snap-on mounting, IP20 front protection.","salesMarkdown":"It carries 4 normally-open instantaneous contacts, meaning it closes the circuit immediately when the coil picks up, with no built-in delay. That's 4 NO contacts you can wire into a PLC input, a status lamp, or a safety chain without loading the main contactor's auxiliary block. Rated operational current varies by voltage: 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, and 1 A at 690 V. That 690 V / 1 A rating is what you need for 690 VAC control circuits common in European industrial panels — most auxiliary contactors top out at 400 V. That low-level switching spec matters for direct PLC input sensing — dry contacts at 17 V won't self-clean, so you need a contactor that reliably closes that low-energy circuit. The 10g / 5 ms and 5g / 10 ms shock resistance means it stays closed under moderate vibration on a conveyor drive or compressor skid. ## Mounting and wiring in the panel Fastening is screw and snap-on mounting. The S00 frame size is 45 mm wide, 57.5 mm tall, 111 mm deep. Wire capacity accepts 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or 2x 4 mm² solid conductors. That covers standard 1.5 mm² control wiring up to 4 mm² for heavier load circuits on the same contact block. ## What you get on the front Front protection class is IP20 — finger-safe terminals but not sealed against water. That -55 °C storage floor means it survives cold warehouse or trucking in winter without damage, even if the panel isn't powered. Substance prohibition date is July 1, 2006, which aligns with the original EU RoHS directive. The part is RoHS-compliant for the standard six restricted substances. No REACH or UL listing is explicitly stated in the evidence, but the SIRIUS series typically carries CE and UL/CSA certification for the broader line.","metaTitle":"Siemens 3RH1344-1AU00-ZW96 SIRIUS Auxiliary Contactor, 4 NO","metaDescription":"Siemens SIRIUS auxiliary contactor 3RH1344-1AU00-ZW96, 4 NO instantaneous contacts, size S00, IP20 front, 10 A at 24 V. Current production. Sourced to order via 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","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":"240 V","at 500 V rated value":"2 A","at 60 Hz rated value":"240 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","operational current at AC-12 maximum":"10 A","for AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","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=270531&mlfb=3RH1344-1AU00-ZW96","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1344-1AU00-ZW96/alternatives.json"},"ai":{"faq":[{"question":"What is the contact configuration on this auxiliary contactor?","answer":"It has 4 normally-open (NO) instantaneous contacts. There are no leading, lagging, delayed, or make-before-break contacts — all four switch simultaneously when the coil energizes."},{"question":"What wire sizes does the 3RH1344-1AU00-ZW96 accept?","answer":"It accepts 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or 2x 4 mm² solid conductors. The terminal design accommodates two wires per clamp, which is useful for daisy-chaining control power."},{"question":"What is the surge voltage rating and why does it matter?","answer":"Surge voltage resistance is 6 kV. This means the contactor can withstand transient overvoltages up to 6 kV without flashover, which is required for fixed-installation isolation in industrial environments per IEC 60947-5-1 overvoltage category III."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1344-1AU00-ZW96","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/3RH1344-1AU00-ZW96 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}}