{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"S202-B25","brand":"ABB","brandSlug":"abb","productSlug":"S202-B25","canonicalUrl":"https://aoctrl.com/abb/S202-B25","factsUrl":"https://aoctrl.com/api/mcp/products/S202-B25","rawCanonicalId":null},"summary":{"shortDescription":"ABB S202-B25, 2-pole miniature circuit breaker, 25 A, Trip Curve B, 277 VAC, 6 kA interrupting capacity, DIN rail mount.","salesMarkdown":"The S202-B25 is a 2-pole miniature circuit breaker rated 25 A with Trip Curve B, meaning it trips between 3× and 5× rated current — designed for resistive and lighting loads where inrush is minimal, not motor starting. DIN rail mounting means it snaps into a standard 35 mm rail inside the distribution panel — no special adapter needed. ## How it sits against the S202M-C25 sibling The S202M-C25 shares the same 25 A, 2-pole, 277 VAC, 6 kA interrupting rating but uses Trip Curve C (5× to 10× In) instead of Curve B. That means the C-curve version tolerates higher inrush — better for small motor or transformer loads — while the B-curve S202-B25 trips faster on modest overloads, which is what you want for lighting panels or resistive heater circuits. Both mount on the same DIN rail footprint, so swapping one for the other in an existing panel is mechanically identical; the only change is the trip characteristic.","metaTitle":"S202-B25 Miniature Circuit Breaker, 25A, Curve B, 2-Pole, 27","metaDescription":"S202-B25 2-pole MCB, 25 A, Trip Curve B, 277 VAC, 6 kA interrupting. DIN rail mount, current lifecycle. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["2-Pole MCB (DIN Rail)"],"specifications":{"Amps":"25","Type":"Trip Curve B","Poles":"2","title":"S202-B25","Mounting":"DIN Rail","Volts AC":"277","description":"Miniature Circuit Breaker, 2P, 25A|Miniature Circuit Breaker, 2 Pole, 25 Amp, 480Y/277 Volts AC","lifecycle_stage":"current","Interrupt Rating AC":"6 kA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$11.07","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/0b3785cbb250fa2c722c87d254af7999.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is S202-B25's listed amps and trip curve?","answer":"The S202-B25 is rated 25 A with Trip Curve B (3× to 5× In), 2-pole, 277 VAC, and a 6 kA interrupting capacity."},{"question":"Will S202-B25 drop into a panel that was specified around S202M-C25 without rewiring?","answer":"Yes — both share the same 2-pole DIN rail footprint, 25 A rating, 277 VAC, and 6 kA interrupting. The only difference is the trip curve: B vs C. Mechanical fit is identical."},{"question":"Where can I buy S202-B25 and what is the lead time?","answer":"The S202-B25 is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm lead time and price."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/abb/S202-B25","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/S202-B25 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}}