{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"GS1NBR4","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"GS1NBR4","canonicalUrl":"https://aoctrl.com/schneider/GS1NBR4","factsUrl":"https://aoctrl.com/api/mcp/products/GS1NBR4","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys GS GS1NBR4 fuse switch disconnector body, 4-pole, BS fuse type, 250 A rated operational current, IP20 with terminal cover.","salesMarkdown":"## 250 A AC-23B — what the ratings mean for the panel The GS1NBR4 is a 4-pole fuse switch disconnector body from the TeSys GS range, rated 250 A in AC-23B duty at 400 V — that is the heavy switching category for motor loads and other high-inrush circuits, not just resistive heating. The same 250 A holds at 500 V and 690 V (with the terminal cover fitted), so the current rating does not derate across the common industrial voltage bands. Breaking capacity is 2000 A at 400 V AC-23B; making capacity is 2500 A at the same voltage. The short-circuit withstand rating of 80 kA tells you the body can survive a fault up to that level when protected by the correct BS fuses — the fuse does the interrupting, but the switch body must hold together through the let-through energy. ## Sourcing and lifecycle — active, quoted to order Sourced through independent distribution channels; availability and current pricing confirmed at RFQ against the BOM quantity. ## Mounting and integration — rail or plate, 4-pole Mounts on a rail or plate — the body accepts power circuit bars or screw terminals (95 to 240 mm² flexible). The 4-pole configuration (4P) means it switches all three phases plus neutral, common in distribution panels where the neutral must be switched with the phases. Dimensions are 12.2 in wide by 7.7 in high by 5.7 in deep — the width is the panel-space driver; the depth fits a standard 600 mm enclosure depth with room for cable bending behind the body. ## Environmental and compliance — IP20, TH treatment, IEC standards IP20 with the terminal cover fitted — finger-safe but not sealed against moisture; suitable for indoor panel installation. Protective treatment TH indicates tropicalised for humid environments. Operating temperature range is -20 to 70 °C, storage -40 to 80 °C. Compliant with IEC 60269-1, IEC 60269-2, and IEC 60947-3 — the fuse switch disconnector standard. Fire resistance is 960 °C on the body and 850 °C on the fuse cover per IEC 60695-2-1.","metaTitle":"Schneider Electric GS1NBR4 TeSys GS Fuse Switch Disconnector","metaDescription":"Active-production GS1NBR4 fuse switch disconnector body, 4-pole, 250 A AC-23B, 80 kA SCCR. Quoted to order against BOM. IEC 60947-3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"5.7 in (146 mm)","Width":"12.2 in (310 mm)","title":"GS1NBR4","Height":"7.7 in (195 mm)","Category":"18402-WORLD SERVICE PARTS(CONTROL ACCESS)","Fuse size":"B1 B3 B2","Fuse type":"BS","Standards":"IEC 60269-2 IEC 60269-1 IEC 60947-3","description":"switch-disconnector fuse body GS1 4 poles - BS - 250 A","Network type":"AC DC","Fire resistance":"1760 °F (960 °C) body IEC 60695-2-1 1562 °F (850 °C) fuse cover IEC 60695-2-1","Making capacity":"2500 A 400 V AC-23B","lifecycle_stage":"current","Mounting Support":"Rail Plate","Range of Product":"TeSys GS","Breaking capacity":"2000 A 400 V AC-23B)","Device short name":"GS1 N","Network Frequency":"50/60 Hz","Poles description":"4P","Tightening torque":"Control circuit 221.3 lbf.in (25 N.m) screw terminals Power circuit 221.3 lbf.in (25 N.m) bars","Protective treatment":"TH","Electrical durability":"1000 cycles AC-23A 1000 cycles AC-23B 200 cycles DC-23A 200 cycles DC-23B","Mechanical durability":"10000 cycles","Connections - terminals":"Power circuit bars Power circuit screw terminals 0.1...0.4 in² (95...240 mm²) flexible","IP degree of protection":"IP20 IEC 60529 with terminal cover)","Short-circuit withstand":"80 kA","Product or Component Type":"Fuse switch disconnector body","Rated operational power in W":"132 kW 400 V AC-23A) 132 kW 400 V AC-23B) 160 kW 500 V AC-23A) 160 kW 500 V AC-23B) 220 kW 690 V AC-23A) 220 kW 690 V AC-23B)","[Ui] rated insulation voltage":"750 V AC 50/60 Hz","[Ie] rated operational current":"200 A 440 V 2 poles in series per phase DC-23A 200 A 440 V 2 poles in series per phase DC-23B 250 A 400 V AC-23A 250 A 400 V AC-23B 250 A 500 V AC-23A 250 A 500 V AC-23B 250 A 690 V with terminal cover AC-23A 250 A 690 V with terminal cover AC-23B","Ambient Air Temperature for Operation":"-4...158 °F (-20...70 °C) operation -40...176 °F (-40...80 °C) storage","[Uimp] rated impulse withstand voltage":"8 kV","[Icm] rated short-circuit making capacity":"250 kA 400 V with protection by BS fuses 250 kA rating of associated fuses","[Ith] conventional free air thermal current":"250 A (at 104 °F (40 °C))"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://www.se.com/ie/en/product/GS1NBR4/switchdisconnector-fuse-body-gs1-4-poles-bs-250-a/"},"ai":{"faq":[{"question":"What is the GS1NBR4 rated for in motor-switching duty?","answer":"Rated 250 A in AC-23B at 400 V, 500 V, and 690 V (with terminal cover). The rated operational power is 132 kW at 400 V AC-23A/B, 160 kW at 500 V, and 220 kW at 690 V."},{"question":"What fuse type does the GS1NBR4 accept?","answer":"It accepts BS-type fuses in sizes, B3, and. The short-circuit making capacity is 250 kA at 400 V when protected by the associated BS fuses."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/GS1NBR4","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/GS1NBR4 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}}