{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT5926-1BC00","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT5926-1BC00","canonicalUrl":"https://aoctrl.com/siemens/3RT5926-1BC00","factsUrl":"https://aoctrl.com/api/mcp/products/3RT5926-1BC00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS varistor surge suppressor, 48-127 V AC / 70-150 V DC, clip-on for S0 contactors, 3RT5926-1BC00.","salesMarkdown":"The Siemens SIRIUS 3RT5926-1BC00 is a varistor-type surge suppressor designed to clip onto S0-size contactors, protecting the coil circuit from voltage transients. It handles control supply voltages of 48 to 127 V AC at both 50 and 60 Hz, and 70 to 150 V DC, making it a single-component fit for panels that mix AC and DC control circuits. The 48-127 V AC range (both 50 and 60 Hz) covers standard 110-120 V control transformers common in North American panels and 48 V control loops used in European installations. The 70-150 V DC range accommodates 110 V DC control buses and 125 V DC battery-backed systems found in substations and switchgear. Because it's a varistor, it clamps the voltage spike rather than filtering it — suitable for suppressing inductive kick from contactor coils, but not for continuous overvoltage protection. Clip-on fastening to S0-size contactors means no DIN-rail space is consumed and no additional wiring is needed beyond the coil terminals. The suppressor mounts in any position, so orientation in a crowded panel isn't a constraint. ## Compliance documentation The part carries the SIRIUS brand designation and is designed for use with Siemens contactors, so the usual manufacturer declarations (CE, UKCA) apply per the SIRIUS product family documentation.","metaTitle":"Siemens SIRIUS 3RT5926-1BC00 Surge Suppressor, 48-127 V AC /","metaDescription":"Siemens SIRIUS 3RT5926-1BC00 varistor surge suppressor for S0 contactors. Rated 48-127 V AC (50/60 Hz) and 70-150 V DC. Clip-on mounting. Current production. Sourced to order again","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"at DC":"70 ... 150 V","title":"3RT5926-1BC00","at 50 Hz":"48 ... 127 V","at 60 Hz":"48 ... 127 V","description":"varistor, 48...127 V AC, varistor, 48...127 V AC, surge suppressor, for mounting onto contactor","1 Rated Value":"50 Hz","2 Rated Value":"60 Hz","During Storage":"-40 ... +80 °C","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"clip-on","Mounting Position":"any","Size Of Contactor":"S0","Product Brand Name":"SIRIUS","Product Designation":"surge suppressor","Substance Prohibitance (Date)":"07/01/2006","Design Of The Surge Suppressor":"Varistor","Type Of Voltage Of The Control Supply Voltage":"AC/DC"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/57d43b56aa085fa0e10c98d555d02a4a.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=580321&mlfb=3RT5926-1BC00"},"ai":{"faq":[{"question":"What is the DC voltage rating?","answer":"The DC control supply voltage range is 70 to 150 V DC."},{"question":"What is the AC voltage rating at 50 Hz?","answer":"At 50 Hz the control supply voltage range is 48 to 127 V AC."},{"question":"What compliance documentation is available?","answer":"RoHS compliance is documented with a substance prohibition date of July 1, 2006. As a Siemens SIRIUS product, standard manufacturer declarations (CE, UKCA) are available through the SIRIUS product documentation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT5926-1BC00","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/3RT5926-1BC00 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}