{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"S204-D16","brand":"ABB","brandSlug":"abb","productSlug":"S204-D16","canonicalUrl":"https://aoctrl.com/abb/S204-D16","factsUrl":"https://aoctrl.com/api/mcp/products/S204-D16","rawCanonicalId":null},"summary":{"shortDescription":"ABB S204-D16 miniature circuit breaker, supplementary protector, 16 A, Trip Curve D, 4-pole, 277 VAC, 10 kA interrupting, DIN rail mount, UL 1077, CSA 22.2 No. 235.","salesMarkdown":"## What this 16 A, Curve D, 4-pole MCB does in a panel The S204-D16 is a 4-pole miniature circuit breaker rated 16 A with a Trip Curve D characteristic, meaning it's designed to handle high inrush currents typical of motor, transformer, or power-supply loads without nuisance tripping — the magnetic trip operates at 10 to 20 times the rated current, so it rides through the startup surge of a 16 A motor load that a Curve B or C breaker would trip on. Rated 277 VAC with 10 kA interrupting capacity. 4-pole breaker isolates three phases plus neutral in one DIN-rail footprint. Mounts on standard DIN rail with finger-safe terminals. 4-pole form factor occupies four modular units on the rail. Listed under UL 1077 (Supplementary Protector) and CSA 22.2 No. 235, which means it's recognized for use within an equipment assembly where an upstream branch-circuit overcurrent device already provides fault protection — not a service-entrance or main breaker, but a supplementary protector for a specific load branch inside the panel.","metaTitle":"S204-D16 Miniature Circuit Breaker, 16 A, Trip Curve D, 4-Po","metaDescription":"S204-D16 miniature circuit breaker, 16 A, Trip Curve D, 4-pole, 10 kA interrupting at 277 VAC. UL 1077, CSA 22.2 No. 235. DIN rail mount. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["4-Pole MCB (DIN Rail)"],"specifications":{"Amps":"16","Type":"Trip Curve D","Poles":"4","title":"S204-D16","Mounting":"DIN Rail","Volts AC":"277","description":"Miniature Circuit Breaker, Supplementary Protector|Miniature Circuit Breaker, Supplementary Protector, Rated Current 16 Amps, 4 Pole, Interrupt Rating 6 kA, Thermal Magnetic Trip Curve D, Voltage up to 277/Y480VAC, DIN Rail Mounted, Finger Safe and Multi-Function Terminals, UL 1077, CSA 22.2 No. 235","lifecycle_stage":"current","Interrupt Rating AC":"10 kA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/8e3e15e4b219d47b1d9bf092e45229cf.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What compliance documentation does the S204-D16 carry?","answer":"UL 1077 (Supplementary Protector) and CSA 22.2 No. 235 — these are the North American safety listings that confirm the breaker is suitable for use within an equipment assembly."},{"question":"Will the S204-D16 drop into a panel specified around the S204-B32?","answer":"Yes — same 4-pole DIN-rail footprint, same 277 VAC / 10 kA interrupting rating, same UL 1077 / CSA 22.2 No. 235 listings. The only difference is the trip curve (D vs B) and the amp rating (16 A vs 32 A), so the panel layout and wiring don't change."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/abb/S204-D16","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/S204-D16 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}}