{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RW4776-0NB00","brand":"Siemens","brandSlug":"siemens","productSlug":"3RW4776-0NB00","canonicalUrl":"https://aoctrl.com/siemens/3RW4776-0NB00","factsUrl":"https://aoctrl.com/api/mcp/products/3RW4776-0NB00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3RW4776-0NB00 power semiconductor module, NTC thermistor, 600 V, 432 A, for 3RW4076 soft starter, RoHS compliant.","salesMarkdown":"The 3RW4776-0NB00 is the power semiconductor module with an integrated NTC thermistor, designed as a service replacement for the Siemens 3RW4076 soft starter series. It carries a 432 A rating at 600 V — that's the continuous current the semiconductor stack handles, not the motor full-load current the starter controls. The NTC thermistor monitors the module temperature and feeds back to the starter's protection logic; if the junction temperature climbs toward the limit, the starter reduces the ramp current or trips before the silicon sees thermal damage. This is a subassembly, not a standalone soft starter. You bolt it onto the 3RW4076 power unit when the original semiconductor stack fails or when you're rebuilding a starter that's been in service long enough to accumulate thermal cycles. The 432 A figure tells you the module matches the 3RW4076's full rating — no derating needed for the replacement part itself. ## Sourcing this replacement module If the 3RW4776-0NB00 is the module called out in the starter's parts list, that's the one to order — the NTC characteristic and the mounting interface are specific to the 3RW4076 power unit.","metaTitle":"Siemens 3RW4776-0NB00 Soft Starter NTC Module, 432 A, 600 V","metaDescription":"Siemens 3RW4776-0NB00 power semiconductor module with NTC for 3RW4076 soft starter. Rated 432 A at 600 V, RoHS compliant. Active production, quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Soft Starters"],"specifications":{"title":"3RW4776-0NB00","description":"Power semiconductor module NTC 600 V, for 3RW4076, 432 A","lifecycle_stage":"current","Product Designation":"Power semiconductor module","Substance Prohibitance (Date)":"05/01/2012"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/483960c0b3b77feded2725c40ebcb2cc.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=884197&mlfb=3RW4776-0NB00"},"ai":{"faq":[{"question":"What is the 3RW4776-0NB00's product designation and what does it do?","answer":"It is a power semiconductor module with an NTC thermistor, rated 432 A at 600 V, designed as a replacement subassembly for the 3RW4076 soft starter. The NTC monitors module temperature for the starter's thermal protection logic."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RW4776-0NB00","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/3RW4776-0NB00 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}}