{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"S203-B16","brand":"ABB","brandSlug":"abb","productSlug":"S203-B16","canonicalUrl":"https://aoctrl.com/abb/S203-B16","factsUrl":"https://aoctrl.com/api/mcp/products/S203-B16","rawCanonicalId":null},"summary":{"shortDescription":"ABB S203-B16, miniature circuit breaker, 16 A, 3-pole, Trip Curve B, DIN rail mount, 6 kA interrupting capacity at 277 VAC, 10 kA at 110 VDC.","salesMarkdown":"The S203-B16 is a 3-pole miniature circuit breaker rated 16 A with a Trip Curve B characteristic, meaning it trips between 3 and 5 times rated current — designed for resistive or lightly inductive loads where inrush is low, like lighting circuits or control transformers, not motor starting. Its 6 kA interrupting rating at 277 VAC handles typical branch-circuit fault levels in commercial panelboards; the 10 kA DC rating at 110 VDC covers control-power supplies and battery-backed circuits. Mounts on standard DIN rail.","metaTitle":"S203-B16 Miniature Circuit Breaker, 16A, 3P, Curve B, DIN Ra","metaDescription":"S203-B16 miniature circuit breaker, 16 A, 3-pole, Trip Curve B, DIN rail mount. 6 kA interrupting at 277 VAC, 10 kA at 110 VDC. Current lifecycle stage. Sourced to order against RF","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":"S203-B16","Mounting":"DIN Rail","Volts AC":"277","Volts DC":"110","description":"Circuit Breaker, Miniature, DIN Rail Mount, 16A, 3P, 400VAC|Circuit Breaker, Miniature, DIN Rail Mount, 16 Amp, 3 Pole, 400 Volt AC, B Trip","lifecycle_stage":"current","Interrupt Rating AC":"6 kA","Interrupt Rating DC":"10 kA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$104.06","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/39831ccf161579eaf5bd06c4755ce02f.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/abb/S203-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/S203-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}}