{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"S204-K32","brand":"ABB","brandSlug":"abb","productSlug":"S204-K32","canonicalUrl":"https://aoctrl.com/abb/S204-K32","factsUrl":"https://aoctrl.com/api/mcp/products/S204-K32","rawCanonicalId":null},"summary":{"shortDescription":"ABB S204-K32 miniature circuit breaker, 4-pole, Trip Curve K, 32 A, 277 VAC, 10 kA interrupting rating, DIN rail mount.","salesMarkdown":"The 10 kA interrupting capacity at 277 VAC handles fault currents typical in commercial and light industrial branch circuits — enough to coordinate with upstream protection without cascading failures. Trip Curve K is the deciding spec here — it's the magnetic trip threshold. Curve K holds the thermal element at the same 32 A continuous rating but sets the magnetic instantaneous trip at 10–14× In (320–448 A). That's higher than Curve C (5–10×) and lower than Curve Z (2–3×). It's sized for loads with moderate inrush — motor starters, transformers, or lighting ballasts — where you need to ride through the startup spike without nuisance tripping, but still clear a hard short fast. The 4-pole configuration means all four poles switch and protect together — used on 3-phase + neutral systems where you want coordinated disconnection of all live conductors. Common in European-style distribution boards feeding mixed single-phase and three-phase loads. DIN-rail mounting clips onto standard 35 mm rail (EN 60715). No panel cutouts, no screw-down — snap it in, bus it, wire it. The closest sibling is the S204-B32 — same 32 A, 4-pole, 277 VAC, 10 kA interrupting rating, same DIN-rail footprint. The only difference is the trip curve: B-curve trips magnetically at 3–5× In (96–160 A), so it's for resistive or low-inrush loads (heaters, incandescent lighting). The K-curve on this part handles the higher inrush of inductive loads. Physically they swap into the same panel slot — no rewiring needed — but the coordination study changes. If the existing panel was specced around B-curve, dropping in a K-curve without checking the load profile risks nuisance trips on resistive circuits or failure to trip fast enough on a hard fault.","metaTitle":"ABB S204-K32 MCB 4P K 32A 277VAC 10kA DIN Rail","metaDescription":"ABB S204-K32 miniature circuit breaker, 32A, 4-pole, Trip Curve K, 277VAC, 10kA interrupting rating. DIN rail mount. Current lifecycle stage. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["4-Pole MCB (DIN Rail)"],"specifications":{"Amps":"32","Type":"Trip Curve K","Poles":"4","title":"S204-K32","Mounting":"DIN Rail","Volts AC":"277","description":"Mcb 4p K 32a 480y/277 Supp|Abb S204-k32 32a 4 Pole Mini circuit Breaker","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/90b11e2349cb3ffc43e5ca47cfca011d.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is S204-K32's listed amps and trip curve?","answer":"The S204-K32 is rated 32 A continuous with a Trip Curve K characteristic (magnetic trip at 10–14× In)."},{"question":"Will S204-K32 drop into a panel specified around S204-B32 without rewiring?","answer":"Physically yes — same 4-pole DIN-rail footprint, same 277 VAC and 10 kA ratings. But the trip curve difference (K vs B) changes the coordination; verify the load profile before swapping."},{"question":"Where can I buy S204-K32 and how is it quoted?","answer":"The S204-K32 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock count or price is published here."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/abb/S204-K32","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-K32 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}}