{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"S803S-B16","brand":"ABB","brandSlug":"abb","productSlug":"S803S-B16","canonicalUrl":"https://aoctrl.com/abb/S803S-B16","factsUrl":"https://aoctrl.com/api/mcp/products/S803S-B16","rawCanonicalId":null},"summary":{"shortDescription":"ABB S800S series, S803S-B16, 3-pole miniature circuit breaker, 16 A, trip curve B, 230 VAC, 50 kA interrupting rating, DIN rail mount.","salesMarkdown":"The ABB S803S-B16 is a 3-pole miniature circuit breaker from the S800S series, rated 16 A with a trip curve B characteristic. Curve B means it trips between 3 and 5 times the rated current (48–80 A magnetic trip), which is the standard choice for resistive or general-purpose loads where inrush is low — lighting, heating, control transformers. The 50 kA interrupting rating at 230 VAC tells you it can safely clear a fault up to that level without welding contacts or cascading upstream, which is high for an MCB this size; you'd typically see 10–25 kA in a residential-grade unit. That puts it in the industrial panel class where fault currents are higher. The 3-pole format handles three-phase circuits (L1, L2, L3) in a single housing, so it fits a 3-module width on the rail. Common deployment: feeding a three-phase motor branch circuit, a distribution sub-panel, or a bank of contactors where the upstream protection needs to be coordinated.","metaTitle":"ABB S803S-B16 MCB S800S 3P B 16A, 50 kA","metaDescription":"ABB S803S-B16 S800S MCB, 3-pole, 16 A, trip curve B, 50 kA interrupting at 230 VAC. Current production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["3-Pole MCB (DIN Rail)"],"specifications":{"Amps":"16","Type":"Trip Curve B","Poles":"3","title":"S803S-B16","Mounting":"DIN Rail","Volts AC":"230","description":"ABB S803S-B16 MCB S800S 3P B 16A|ABB S803SB16","lifecycle_stage":"current","Interrupt Rating AC":"50 kA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/25ca5e30ce83b757d0258dc4b23b9e3c.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the interrupting rating of S803S-B16?","answer":"50 kA at 230 VAC. That is the maximum fault current the breaker can safely interrupt without damage."},{"question":"Where can I buy S803S-B16 and get current pricing?","answer":"We source this part to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What does trip curve B mean on this breaker?","answer":"Curve B trips magnetically between 3 and 5 times the rated current (48–80 A for the 16 A version). It is intended for resistive loads and general-purpose circuits with low inrush current."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/abb/S803S-B16","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/abb/S803S-B16 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}}