{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"S403M-C10","brand":"ABB","brandSlug":"abb","productSlug":"S403M-C10","canonicalUrl":"https://aoctrl.com/abb/S403M-C10","factsUrl":"https://aoctrl.com/api/mcp/products/S403M-C10","rawCanonicalId":null},"summary":{"shortDescription":"ABB S400 SMISSLIN MCB, S403M-C10, 10 A, 3-pole, Trip Curve C, 240 VAC, 10 kA interrupting rating, DIN Rail mount.","salesMarkdown":"## What this 10 A Curve C MCB does in a panel The ABB S403M-C10 is a 3-pole miniature circuit breaker from the S400 SMISSLIN family, rated 10 A with a Trip Curve C characteristic at 240 VAC. The closest peer in the S200 family is the S203-D13 — same 3-pole DIN-rail footprint, same 10 kA interrupting rating, but a D curve (10×–20× In) instead of C, and rated 277 VAC instead of 240 VAC. The D curve is for high-inrush loads like large motors or welding equipment. If your panel was specified around an S203-D13, the S403M-C10 will physically drop into the same DIN-rail slot without rewiring — same pole count, same mounting. The functional difference is the trip curve: if your load is moderate inrush (pumps, fans, general distribution), the C curve is a better fit; if it's high inrush, stick with D. The S403M-C10 also carries the SMISSLIN design, which is ABB's tool-free plug-in system for the S400 range — the S203 family uses a different terminal interface. ## What compliance documentation is available ABB provides standard compliance documentation for the S400 series: RoHS and REACH declarations are available on request. The MCB is designed and tested to IEC/EN 60898-1 and IEC/EN 60947-2. For specific UL or CSA listings, check the variant suffix — the standard S403M-C10 is typically CE-marked for European installations. Documentation is supplied with the part or available as a PDF upon request.","metaTitle":"ABB S403M-C10 S400 MCB, 10 A, 3-Pole, Curve C, DIN Rail","metaDescription":"ABB S403M-C10 SMISSLIN MCB, 10 A, 3-pole, Trip Curve C, 240 VAC, 10 kA interrupting rating. Active production, sourced to order. Request RFQ for current pricing.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Amps":"10","Type":"Trip Curve C","Poles":"3","Mounting":"DIN Rail","Volts AC":"240","Family / Style":"S400","lifecycle_stage":"current","Interrupt Rating AC":"10 kA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$99.06","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/S403M-C10/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy S403M-C10 and get a price?","answer":"You can source the S403M-C10 through our desk. It is quoted to order against an RFQ — submit a request and we will confirm availability and current pricing at quote time. No stock count or price is listed here; the supply channel is active and we can move quickly on quantity."},{"question":"What is the closest functional second-source to S403M-C10?","answer":"The closest functional second-source is the ABB S203-D13. Both are 3-pole, DIN-rail MCBs with a 10 kA interrupting rating. The key difference: the S403M-C10 uses a C curve (5–10× In) at 240 VAC, while the S203-D13 uses a D curve (10–20× In) at 277 VAC. They share the same physical footprint and pole count, so the S203-D13 can drop into the same panel slot without rewiring — but the trip curve choice depends on your load's inrush profile."},{"question":"What is the S403M-C10's rated amps?","answer":"The S403M-C10 is rated 10 A. That is the continuous current it can carry without tripping under normal conditions."},{"question":"What is the S403M-C10's trip curve type?","answer":"The S403M-C10 has a Trip Curve C characteristic. This means it trips between 5× and 10× the rated current, which is suitable for moderate inrush loads like small motors, transformers, and general distribution circuits."},{"question":"Will S403M-C10 drop into a panel specified around S203-D13 without rewiring?","answer":"Yes, the S403M-C10 will physically fit into the same DIN-rail slot as the S203-D13 — both are 3-pole, DIN-rail mounted MCBs. No rewiring is needed for the mechanical mounting. However, the electrical characteristics differ: the S403M-C10 uses a C curve at 240 VAC, while the S203-D13 uses a D curve at 277 VAC. Verify that your load's inrush and voltage requirements match the C curve before swapping."},{"question":"What compliance documentation does ABB provide for S403M-C10?","answer":"ABB provides RoHS and REACH declarations for the S403M-C10. The MCB is designed and tested to IEC/EN 60898-1 and IEC/EN 60947-2. Standard documentation is supplied with the part or available as a PDF on request. For UL or CSA listings, check the specific variant suffix."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/abb/S403M-C10","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/S403M-C10 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}