{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"S202-K2","brand":"ABB","brandSlug":"abb","productSlug":"S202-K2","canonicalUrl":"https://aoctrl.com/abb/S202-K2","factsUrl":"https://aoctrl.com/api/mcp/products/S202-K2","rawCanonicalId":null},"summary":{"shortDescription":"ABB S200 series, S202-K2, 2-pole miniature circuit breaker, 2 A, K trip curve, 277 V AC, 6 kA interrupting capacity, DIN rail mount, UL 1077 supplemental protector.","salesMarkdown":"## S202-K2 — 2 A K-Curve Supplemental Protector The ABB S202-K2 is a 2-pole miniature circuit breaker from the S200 series, rated at 2 A with a K trip curve and 277 V AC. It carries a 6 kA interrupting capacity and is classified as a UL 1077 supplemental protector — meaning it protects downstream equipment, not branch-circuit wiring, so it belongs on the load side of a branch-circuit overcurrent device. The K curve is designed for inductive loads: motors, transformers, and solenoids where inrush current is higher than a resistive load but lower than what a D curve would tolerate. The 2 A rating governs continuous current — this breaker will hold 2 A indefinitely at 40 °C ambient. Above that, the thermal-magnetic trip mechanism responds: the thermal bimetal handles overloads (slow trip, inverse-time), and the magnetic coil handles short-circuits (instantaneous). K-curve magnetic trip is typically 10–14× In, so at 2 A the magnetic pickup is around 20–28 A. That means it tolerates motor starting surges without nuisance tripping, but clears fast on a hard fault. UL 1077 listing means it is a supplemental protector, not a branch-circuit rated breaker (UL 489). In a UL panel, it must be fed from a branch-circuit rated device upstream. CSA 22.2 No. 235 carries the same supplemental classification in Canada. ## Panel Integration Snap-on DIN rail mount, 2-pole width (roughly 36 mm). The S200 series uses a captive screw terminal with box lug — accepts up to 25 mm² conductor. Busbar compatible for feed-through distribution. The K-curve variant is common in motor control centers feeding contactor coils, small transformers, and solenoid valve manifolds.","metaTitle":"S202-K2 2A K-Curve 2-Pole DIN Rail MCB, 277V AC","metaDescription":"S202-K2 2A K-curve 2-pole miniature circuit breaker, 277V AC, 6 kAIC, UL 1077. Current production. Sourced to order against RFQ. Quoted on request.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["2-Pole MCB (DIN Rail)"],"specifications":{"Amps":"2","Type":"Trip Curve K","Poles":"2","Mounting":"DIN Rail","Volts AC":"277","lifecycle_stage":"current","Interrupt Rating AC":"6 kA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$18.52","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/1b888e9d473400bd32917551d1de57a0.pdf","sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/S202-K2/alternatives.json"},"ai":{"faq":[{"question":"What is S202-K2's interrupting rating?","answer":"6 kA at 277 V AC. This is the maximum fault current the breaker can safely interrupt."},{"question":"What compliance documentation does S202-K2 carry?","answer":"UL 1077 and CSA 22.2 listed as a supplemental protector. RoHS and REACH compliance is standard for ABB S200 series production."},{"question":"Where can I buy S202-K2?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/abb/S202-K2","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-K2 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}}