{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"GS2K4","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"GS2K4","canonicalUrl":"https://aoctrl.com/schneider/GS2K4","factsUrl":"https://aoctrl.com/api/mcp/products/GS2K4","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys GS switch-disconnector-fuse, GS2K4, 4 poles, 125 A, fuse type NFC size 22x58 mm, breaking capacity 10 kA at 400 V AC-23B.","salesMarkdown":"It's built to IEC 60947-3, the standard for disconnectors and switch-disconnectors, meaning it provides visible-break isolation plus load-breaking capability in one package. Rated operational current (Ie) varies by duty: 125 A at 400 V and 500 V in AC-23A/B, and 100 A at 690 V AC-23A/B. For DC applications, it's rated 100 A at 440 V with two poles in series per phase for both DC-23A and DC-23B duty cycles. Rated operational power reaches 63 kW at 400 V, 90 kW at 500 V, and 80 kW at 690 V — so it handles motor loads across common industrial voltage levels, not just resistive heating banks. Making capacity is 1 kA at the same conditions, meaning it can close onto a fault without welding contacts. Short-circuit withstand rating is 20 kA — the switch can survive that level of through-fault current when protected by upstream fuses or breakers, without needing to interrupt it itself. The rated short-circuit making capacity (Icm) is 100 kA at 400 V with gG fuse protection, which is the peak asymmetrical current it can close into. ## Integration and physical fit Mounts to a plate — not DIN rail — so plan for a drilled backplate in the enclosure. Dimensions are 184 mm wide, 162 mm high, 116 mm deep. Accepts power circuit connections via bars (20 mm²) or ring-terminal lugs (35 to 95 mm²). Tightening torque on the power terminals is 12 N·m. Fuse size is 22 x 58 mm, type NFC — a standard European fuse format. The switch accepts four protected poles (4t), with 4 NO contacts. Operating handle can be mounted on the external right side or external frontal position, giving flexibility in panel layout. IP20 with terminal cover fitted — that's finger-safe but not washdown-rated. Fire resistance is 850 °C on the fuse cover and 960 °C on the body, per IEC 60695-2-1.","metaTitle":"Schneider TeSys GS2K4 Switch-Disconnector-Fuse, 4P, 125A, 22","metaDescription":"Schneider TeSys GS GS2K4 switch-disconnector-fuse, 4 poles, 125 A, NFC fuse size 22x58 mm. Breaking capacity 10 kA at 400 V AC-23B. Active production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"116 mm","Range":"TeSys","Width":"184 mm","title":"GS2K4","Height":"162 mm","Fuse size":"22 x 58 mm","Fuse type":"NFC","Standards":"IEC 60947-3","description":"Switch disconnector fuse, TeSys GS, 4P, 125A, fuse type NFC, size 22x58 mm","Network type":"AC DC","Product name":"TeSys GS","Fire resistance":"850 °C fuse cover conforming to IEC 60695-2-1 960 °C body conforming to IEC 60695-2-1","Making capacity":"1000 A at 400 V AC-23B","lifecycle_stage":"current","Mounting support":"Plate","Breaking capacity":"10000 A at 400 V (AC-23B)","Device short name":"GS2K","Network frequency":"50/60 Hz","Poles description":"4P","Tightening torque":"Power circuit: 12 N.m","Electrical durability":"1000 cycles AC-23A 1000 cycles DC-23A 200 cycles AC-23B 200 cycles DC-23B","Mechanical durability":"10000 cycles","Connections - terminals":"Power circuit: bars20 mm² Power circuit: lugs-ring terminals35...95 mm²","IP degree of protection":"IP20 conforming to IEC 60529 (with terminal cover)","Short-circuit withstand":"20 kA","Type of operating handle":"External right side External frontal","Product or component type":"Switch-disconnector-fuse","Protected poles description":"4t","Rated operational power in W":"63 kW at 400 V 90 kW at 500 V 80 kW at 690 V","Contacts type and composition":"4 NO","[Ui] rated insulation voltage":"750 V AC 50/60 Hz","[Ie] rated operational current":"100 A at 440 V 2 poles in series per phase DC-23A 100 A at 440 V 2 poles in series per phase DC-23B 100 A at 690 V AC-23A 100 A at 690 V AC-23B 125 A at 400 V AC-23A 125 A at 400 V AC-23B 125 A at 500 V AC-23A 125 A at 500 V AC-23B","Ambient air temperature for storage":"-40...80 °C","Ambient air temperature for operation":"-20...70 °C","[Uimp] rated impulse withstand voltage":"8 kV","[Icm] rated short-circuit making capacity":"100 kA at 400 V with protection by gG fuses","[Ith] conventional free air thermal current":"125 A (at 40 °C)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$334.58","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://www.se.com/th/en/product/GS2K4/switch-disconnector-fuse-tesys-gs-4p-125a-fuse-type-nfc-size-22x58-mm/"},"ai":{"faq":[{"question":"What are the key ratings for GS2K4?","answer":"Rated operational current is 125 A at 400 V AC-23A/B, with breaking capacity of 10 kA at 400 V AC-23B. Short-circuit withstand is 20 kA. Rated operational power reaches 63 kW at 400 V, 90 kW at 500 V, and 80 kW at 690 V."},{"question":"What standard does GS2K4 comply with?","answer":"It complies with IEC 60947-3, the standard for disconnectors and switch-disconnectors. Rated insulation voltage (Ui) is 750 V AC, and impulse withstand voltage (Uimp) is 8 kV."},{"question":"What fuse size does GS2K4 accept?","answer":"It accepts 22 x 58 mm NFC-type fuses. The switch has four protected poles."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/GS2K4","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/schneider/GS2K4 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}}