{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1344-1BF40-ZW97","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1344-1BF40-ZW97","canonicalUrl":"https://aoctrl.com/siemens/3RH1344-1BF40-ZW97","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1344-1BF40-ZW97","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RH1344-1BF40-ZW97, contactor relay, 4NO+4NC, DC 110 V coil, screw terminals, size S00, multi-pack quantity 27 units.","salesMarkdown":"The Siemens 3RH1344-1BF40-ZW97 is a SIRIUS contactor relay in size S00, carrying 4 normally-open and 4 normally-closed contacts with a DC 110 V coil and screw-type terminals. It's the switching element you'd wire into a control panel to multiply contact signals from a PLC output or a safety relay — the 4NO+4NC arrangement gives you enough isolated poles to drive multiple loads or feedback paths without adding an auxiliary contact block. ## Coil and contact considerations The DC 110 V coil is a common voltage in European control circuits, but it pulls a steady holding current — unlike an AC coil, there's no drop in holding power after pickup. That means the DC supply feeding it needs to be sized for continuous draw, and the PLC output or relay driving it must handle the inrush without voltage sag. The screw terminals accept standard ferrule or solid wire; strip length and torque follow the SIRIUS S00 terminal spec, which is consistent across the 3RH1 family. ## Panel integration The screw terminals are front-accessible, which keeps wiring tidy in a crowded panel. No special tooling needed beyond a screwdriver and a ferrule crimper for stranded wire.","metaTitle":"Siemens 3RH1344-1BF40-ZW97 Contactor Relay, 4NO+4NC, DC 110V","metaDescription":"Siemens 3RH1344-1BF40-ZW97 contactor relay, 4NO+4NC, DC 110 V coil, screw terminals, size S00. Lifecycle stage current. Available to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"lifecycle_stage":"current"}},"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=153148&mlfb=3RH1344-1BF40-ZW97","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1344-1BF40-ZW97/alternatives.json"},"ai":{"faq":[{"question":"What is the contact configuration and coil voltage for this relay?","answer":"It has 4 normally-open and 4 normally-closed contacts with a DC 110 V coil, using screw-type terminals."},{"question":"Where can I buy the 3RH1344-1BF40-ZW97?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution, with availability and current pricing confirmed at quote time."},{"question":"What size is this contactor relay?","answer":"It is size S00, which is the smallest frame in the SIRIUS contactor relay range, designed for DIN-rail mounting in control panels."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1344-1BF40-ZW97","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-ZW97 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}}