{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"S202-D20","brand":"ABB","brandSlug":"abb","productSlug":"S202-D20","canonicalUrl":"https://aoctrl.com/abb/S202-D20","factsUrl":"https://aoctrl.com/api/mcp/products/S202-D20","rawCanonicalId":null},"summary":{"shortDescription":"ABB S202-D20, miniature circuit breaker, 20 A, 2-pole, Trip Curve D, 480Y/277 VAC, 6 kA interrupting capacity, DIN rail mount.","salesMarkdown":"For most branch circuits in a distribution board fed by a transformer under 150 kVA, that's adequate headroom. The 2-pole footprint is two module widths (approx. 36 mm) — account for that in your enclosure fill factor and gland-plate layout. No additional mounting hardware or backplate clearance needed. The 480Y/277 VAC rating is line-to-line on a wye secondary. The voltage rating is a maximum, not a requirement. ## Comparison with the S202M-C20 The closest functional peer is the S202M-C20 — same 20 A, same 2-pole DIN-rail footprint, same 6 kA interrupting rating at 277 VAC. The only difference is the trip curve. If the existing panel was specified around an S202M-C20, the S202-D20 will physically drop into the same DIN rail slot and wire identically. The swap is electrically valid only if the load's inrush profile suits the D curve — motors, transformers, or high-surge loads are fine; resistive or general-purpose branch circuits should stay on the C curve to maintain coordination.","metaTitle":"S202-D20 Miniature Circuit Breaker, 20A, 2-Pole, Curve D, 6","metaDescription":"S202-D20 ABB miniature circuit breaker, 20 A, 2-pole, Trip Curve D, 480Y/277 VAC, 6 kA interrupting rating. DIN rail mount. Current lifecycle stage. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["2-Pole MCB (DIN Rail)"],"specifications":{"Amps":"20","Type":"Trip Curve D","Poles":"2","title":"S202-D20","Mounting":"DIN Rail","Volts AC":"277","description":"Circuit Breaker, Miniature, DIN Rail Mount, 20A, 2P, 480Y/277VAC|Circuit Breaker, Miniature, DIN Rail Mount, 20 Amp, 2 Pole, 480Y/277 Volt AC, D Trip","lifecycle_stage":"current","Interrupt Rating AC":"6 kA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$13.97","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/774de7a2838978e709b75177124744f0.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Will the S202-D20 replace an S202M-C20 in an existing panel?","answer":"Yes, mechanically — same DIN rail mount, same 2-pole width, same wire terminals. The trip curve differs (D vs C), so confirm the load's inrush characteristic before swapping. For motor or transformer loads, the D curve is often the better fit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/abb/S202-D20","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-D20 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}}