{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3TX7130-0RF03","brand":"Siemens","brandSlug":"siemens","productSlug":"3TX7130-0RF03","canonicalUrl":"https://aoctrl.com/siemens/3TX7130-0RF03","factsUrl":"https://aoctrl.com/api/mcp/products/3TX7130-0RF03","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3TX71 Series open power relay, 3TX7130-0RF03, surface-mount, 40 A, 110 VDC coil, DPDT.","salesMarkdown":"## What this relay carries The Siemens 3TX7130-0RF03 is an open power relay from the 3TX71 Series, rated for 40 A continuous current with DPDT contact arrangement. Coil pulls in at 110 VDC — a common DC bus voltage in industrial control panels, so it integrates directly without a separate DC-DC converter for the coil supply. DC contact rating is 40 A at 120 V, which covers most medium-current DC load switching in process skids or conveyor sections. The 1/3 hp at 120 V AC rating confirms it can handle fractional-horsepower motor loads, though the 40 A DC figure is the headline for DC applications. Dielectric strength is specified at 1,500 Vrms between contacts and 2,200 Vrms between coil and contact, and between poles — this gives reasonable isolation for a 110 VDC coil circuit switching 120 VDC loads in the same enclosure. ## Durability and mounting Rated for 100,000 electrical operations and 1,000,000 mechanical operations — the electrical endurance is the limiting factor in a cycling application (e.g., a valve actuator or heater contactor cycling multiple times per hour). Surface-mount style means it bolts to a panel or subplate, not a DIN rail; plan for screw-terminal access and clearance for the 40 A wire gauge. No status indicator and no push-to-test button are fitted — this is a bare relay for panel builders who add their own pilot lights or test circuitry. The absence of those features keeps the footprint compact and the part count lower in a custom panel design.","metaTitle":"Siemens 3TX7130-0RF03 Open Power Relay, 40 A, 110 VDC, DPDT","metaDescription":"Siemens 3TX7130-0RF03 open power relay, 40 A at 120 VDC, 110 VDC coil, DPDT contacts. Mature lifecycle stage. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Motor Control Accessories"],"specifications":{"Brand":"SIEMENS","Series":"3TX71 Series","Motor Rated":"Yes","Coil Voltage":"110V DC","Contact Form":"DPDT","Current Rating":"40 A","lifecycle_stage":"mature","Status Indicator":"No Indicator","Contact Rating (DC)":"40 A @ 120V","Dielectric Strength":"1,500 Vrms Between Contacts; 2,200 Vrms Between Coil and Contact; 2,200 Vrms Between Poles","Push-To-Test Button":"No Test Button","Horsepower @ 120V AC":"1/3 hp","Relay Mounting Style":"Surface","Electrical Operating Durability":"100,000","Mechanical Operating Durability":"1,000,000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$115.66 – $120.99","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/3TX7130-0RF03/alternatives.json"},"ai":{"faq":[{"question":"What is the closest alternative to 3TX7130-0RF03 in the 3TX71 family?","answer":"Within the 3TX71 Series, the main differentiator is coil voltage and contact arrangement. This DPDT, 40 A, 110 VDC coil variant is the specific combination; a sibling with a different coil voltage (e.g., 24 VDC or 230 VAC) would not be a drop-in replacement without changing the control circuit supply."},{"question":"Where can I buy the 3TX7130-0RF03 and how is it quoted?","answer":"This relay is sourced to order against an RFQ through independent industrial distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead-time commitment."},{"question":"What compliance documentation is available for this relay?","answer":"The evidence does not list specific compliance marks (UL, CSA, CE, RoHS) for this order code. For a BOM freeze or regulatory filing, request the manufacturer's declaration from the distributor at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3TX7130-0RF03","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/3TX7130-0RF03 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}}