{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"S801S-B20","brand":"ABB","brandSlug":"abb","productSlug":"S801S-B20","canonicalUrl":"https://aoctrl.com/abb/S801S-B20","factsUrl":"https://aoctrl.com/api/mcp/products/S801S-B20","rawCanonicalId":null},"summary":{"shortDescription":"ABB S801S-B20, 1-pole miniature circuit breaker, 20 A, Trip Curve B, DIN rail mount, 50 kA interrupting capacity at 400/690 VAC.","salesMarkdown":"The S801S-B20 is a 1-pole miniature circuit breaker rated 20 A with a Trip Curve B characteristic, meaning it trips instantaneously at 3 to 5 times rated current — suited for protecting resistive or lightly inductive loads where inrush is low, like lighting circuits or control transformers. Its 50 kA interrupting capacity at 400/690 VAC gives it headroom for high-fault installations without cascading upstream breakers. The DIN rail mount snaps into standard 35 mm rail in a distribution board or control panel. Single-pole format occupies one module width on the DIN rail. The thermal-magnetic trip mechanism provides overload protection without external relays. Rated operational voltage spans 400/690 VAC and 125 VDC, so it covers both AC distribution and DC control circuits in mixed-voltage panels.","metaTitle":"S801S-B20 Circuit Breaker, 20A, 1-Pole, Curve B, DIN Rail","metaDescription":"S801S-B20 20A 1-pole miniature circuit breaker, Trip Curve B, 50 kA interrupting capacity at 400/690 VAC. DIN rail mount. Current lifecycle. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Amps":"20","Type":"Trip Curve B","Poles":"1","title":"S801S-B20","Mounting":"DIN Rail","Volts AC":"230","description":"Circuit Breaker, 20A, 1P|Circuit Breaker, 20 Amp, 1-Pole, Tripping Characteristic: B, Thermal Tripping Mechanism, Overload Protection, Rated Operational Voltage: 400/690 Volts AC, 125 Volts DC, Rated Frequency: 50/60 Hz","lifecycle_stage":"current","Interrupt Rating AC":"50 kA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/b24cad61bfd239355ee4381b3eefe27b.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy S801S-B20 and get a price?","answer":"S801S-B20 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is the interrupting rating of S801S-B20?","answer":"50 kA at 400/690 VAC, giving it high-fault capacity for industrial distribution panels."},{"question":"What does Trip Curve B mean for this breaker?","answer":"Curve B trips instantaneously at 3–5× rated current (60–100 A for this 20 A unit), making it suitable for resistive loads and lighting circuits with low inrush."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/abb/S801S-B20","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/S801S-B20 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}}