{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV1918-5A","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV1918-5A","canonicalUrl":"https://aoctrl.com/siemens/3RV1918-5A","factsUrl":"https://aoctrl.com/api/mcp/products/3RV1918-5A","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary switch, Size S00, 1 NO + 1 NC, solder pin connectors, max 10A.","salesMarkdown":"It provides one normally-open and one normally-closed instantaneous contact, terminated via solder pin connectors — a fixed connection method that means you're wiring it directly into the PCB or terminal block, not clipping into a spring-cage or screw terminal. The maximum switching capability is 10 A, but that's only at 690 V AC-15 (solenoid/contactor coil duty). At the more common 24 V DC control voltage it's rated 2 A; at 110 V AC it drops to 0.5 A, and at 230 V AC it handles 4 A. The 690 V / 10 A rating is for the highest-voltage industrial control circuits — most panels run 400 V or less, so the practical limit is the lower current at your line voltage. ## Panel Integration — Solder Pin Fit This block snaps onto the front of a Size S00 Siemens circuit breaker. The solder pin connection means it is intended for a fixed wiring harness or PCB — not for field rewiring. Verify the pin spacing matches your terminal layout before adding to the BOM; the pins are not adjustable.","metaTitle":"Siemens 3RV1918-5A SIRIUS Auxiliary Switch, 10A Max, Solder","metaDescription":"Siemens 3RV1918-5A SIRIUS auxiliary switch for Size S00 breakers. 10A max, 1 NO + 1 NC, solder pin terminals. Phased-out product — sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Motor Protection Circuit Breakers (MPCB)"],"specifications":{"Maximum":"10A","at 24 V":"2A","at 110 V":"0.5A","at 220 V":"0.25A","at 230 V":"4A","at 400 V":"3A","at 690 V":"10A","During Storage":"-50 ... +80°C","lifecycle_stage":"current","During Operation":"-20 ... +60°C","Product Brand Name":"SIRIUS","Size Of The Circuit-Breaker":"S00","at AC-15 at 690 V rated value":"1A","Type Of Electrical Connection For Auxiliary And Control Circuit":"solder pin connectors","number of CO contacts of auxiliary contacts instantaneous contact":"0","number of NC contacts for auxiliary contacts instantaneous contact":"1","number of NO contacts for auxiliary contacts instantaneous contact":"1"}},"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=396237&mlfb=3RV1918-5A","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV1918-5A/alternatives.json"},"ai":{"faq":[{"question":"Does 3RV1918-5A have solder pin or screw terminals?","answer":"It uses solder pin connectors for both auxiliary and control circuits — a fixed connection method, not screw or spring-cage terminals."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV1918-5A","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/3RV1918-5A 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}}