{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"S202-B10","brand":"ABB","brandSlug":"abb","productSlug":"S202-B10","canonicalUrl":"https://aoctrl.com/abb/S202-B10","factsUrl":"https://aoctrl.com/api/mcp/products/S202-B10","rawCanonicalId":null},"summary":{"shortDescription":"ABB S202-B10 miniature circuit breaker, 10 A, 2-pole, Trip Curve B, DIN rail mount, 277 VAC, 6 kA interrupting rating.","salesMarkdown":"## What this MCB is and where it fits The ABB S202-B10 is a 2-pole miniature circuit breaker rated at 10 A with a Trip Curve B characteristic, meaning it trips at 3–5 times rated current — designed to protect resistive or lightly inductive loads like lighting circuits or control transformers where inrush is modest. It mounts on standard DIN rail inside a distribution board or control panel, and its 6 kA interrupting rating at 277 VAC is sized for branch-circuit fault clearing in commercial or light industrial panels. ## What the ratings mean for fit The 10 A rating is the continuous current the breaker carries without tripping. The B-curve characteristic (3–5× In) means magnetic trips happen between 30–50 A — a good match for circuits where the load doesn't slam the breaker on startup. The 2-pole version handles single-phase 277 VAC line-to-neutral or two legs of a 480Y/277 V system. The 6 kA interrupting capacity tells you this breaker can safely clear a fault up to that level without welding contacts or venting arc gas into the panel — check that your available fault current at the panelboard doesn't exceed this figure.","metaTitle":"S202-B10 Miniature Circuit Breaker, 10A, 2-Pole, Curve B","metaDescription":"S202-B10 10A 2-pole miniature circuit breaker with Trip Curve B, 6 kA interrupting capacity at 277 VAC. 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":["2-Pole MCB (DIN Rail)"],"specifications":{"Amps":"10","Type":"Trip Curve B","Poles":"2","title":"S202-B10","Mounting":"DIN Rail","Volts AC":"277","description":"Circuit Breaker, Miniature, DIN Rail Mount, 10A, 2P, 480Y/277VAC|Circuit Breaker, Miniature, DIN Rail Mount, 10 Amp, 2 Pole, 480Y/277 Volt AC, B Trip","lifecycle_stage":"current","Interrupt Rating AC":"6 kA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$40.09","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/ca107f0cc435da875980289525c56789.pdf","sourceUrl":null},"ai":{"faq":[{"question":"How do I get current pricing and availability for S202-B10?","answer":"Submit an RFQ through this listing. Pricing and stock levels are confirmed at quote time through independent distribution channels."},{"question":"When sourcing S202-B10, what's the closest functional second-source — S202M-C10?","answer":"The S202M-C10 is a close functional peer — same 10 A, 2-pole, DIN-rail footprint, and 6 kA interrupting rating — but uses a C-curve trip characteristic (5–10× In) instead of the B-curve. If the panel was designed around B-curve protection for lighting or transformer loads, swapping to a C-curve may allow higher inrush without nuisance trips, but verify the load's starting profile and the required selectivity coordination before substituting."},{"question":"Will S202-B10 drop into a panel that was specified around S202M-C10 without rewiring?","answer":"Yes, the S202-B10 shares the same 2-pole DIN-rail footprint and terminal layout as the S202M-C10 — no rewiring needed. The only difference is the trip curve (B vs C), which affects the magnetic trip threshold, not the physical fit."},{"question":"What is S202-B10's listed amps (10) on this component line?","answer":"The S202-B10 is rated for 10 A continuous current."},{"question":"What is S202-B10's listed type (Trip Curve B) on this component line?","answer":"The S202-B10 uses Trip Curve B, meaning the magnetic trip operates at 3–5 times the rated current (30–50 A)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/abb/S202-B10","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-B10 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}}