{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1344-1AR00-ZX95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1344-1AR00-ZX95","canonicalUrl":"https://aoctrl.com/siemens/3RH1344-1AR00-ZX95","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1344-1AR00-ZX95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary contactor, size S00, 4 NO instantaneous contacts, screw and snap-on mounting, IP20 front, 45 mm width.","salesMarkdown":"Its four normally-open instantaneous contacts handle the signal-level and pilot-duty switching in a panel, extending the contact set of a main contactor or acting as an interposing relay. That gives a panel builder room to fit it into tight enclosures without worrying about orientation restrictions. The front carries IP20 protection, which is standard for a panel-mounted device — no washdown rating, so it stays inside the cabinet, not on the machine frame. The 4 NO contacts are rated for switching at various voltages: 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, and 1 A at 690 V. These are the thermal current ratings for the contact set — the actual making/breaking capacity depends on the load type (AC-15, DC-13), but these numbers give the headroom for control transformers, PLC outputs, and contactor coils. The 6 kV rated surge voltage means the contacts handle transient overvoltages common in industrial control panels without welding shut. That is a dry-circuit rating — important if this contactor is switching low-energy signals like PLC inputs or sensor feedback, where oxide films on silver contacts can cause intermittent failures. For a sourcing decision: if your BOM calls for switching 24 VDC pilot lights or relay coils, this contactor is well within its comfort zone. Shock resistance is 10g / 5 ms and 5g / 10 ms — enough for most machine-mounted panels but not for high-vibration applications like crushers or presses without additional damping. The dimensions are 45 mm width, 57.5 mm height, and 111 mm depth. That 45 mm width is a single S00-size unit — three fit in a 135 mm wide DIN-rail section, which matters for panel fill factor. The screw terminals accept solid conductors: 2x 0.5…1.5 mm², 2x 0.75…2.5 mm², and 2x 4 mm². Strip length and torque values are standard for Siemens SIRIUS terminals; no special tooling needed. Rated frequency is 50 Hz with an operating range of 0.8…1.1 at 50 Hz and 0.85…1.1 at 60 Hz. That range is the voltage factor for the coil — it means the coil can tolerate a 20% voltage drop at 50 Hz and 15% at 60 Hz without dropping out, and can handle overvoltage up to 110% of nominal. For a 50 Hz supply, the coil holds in down to 80% of rated voltage; for 60 Hz, down to 85%. That is typical for SIRIUS contactors and matters if your control transformer is undersized or the line voltage sags during motor starts.","metaTitle":"Siemens 3RH1344-1AR00-ZX95 SIRIUS Auxiliary Contactor, 4 NO,","metaDescription":"Siemens 3RH1344-1AR00-ZX95 SIRIUS auxiliary contactor, size S00, 4 NO contacts, screw and snap-on mounting, IP20 front. Current production. Sourced to order.","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":"415 V","at 500 V rated value":"2 A","at 60 Hz rated value":"415 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=498826&mlfb=3RH1344-1AR00-ZX95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1344-1AR00-ZX95/alternatives.json"},"ai":{"faq":[{"question":"What are the key switching ratings for the 3RH1344-1AR00-ZX95?","answer":"The 4 NO contacts are rated at 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, and 1 A at 690 V. The surge voltage resistance is 6 kV. These are thermal current ratings; actual making/breaking capacity depends on the load category."},{"question":"What is the physical size and mounting of the 3RH1344-1AR00-ZX95?","answer":"It is 45 mm wide, 57.5 mm high, and 111 mm deep. It mounts on a DIN rail via screw or snap-on, and the mounting position allows ±180° rotation and ±22.5° tilt on a vertical surface."},{"question":"What conductor sizes does the 3RH1344-1AR00-ZX95 accept?","answer":"The screw terminals accept solid conductors: 2x 0.5…1.5 mm², 2x 0.75…2.5 mm², and 2x 4 mm²."},{"question":"What compliance documentation is available for the 3RH1344-1AR00-ZX95?","answer":"The part carries a substance prohibitance date of 07/01/2006, indicating RoHS compliance from that date. The IP20 front protection and pollution degree 3 rating are documented. Standard Siemens SIRIUS documentation (CE, UL, CSA) applies to this series."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1344-1AR00-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/3RH1344-1AR00-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}}