{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"GS1SB3","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"GS1SB3","canonicalUrl":"https://aoctrl.com/schneider/GS1SB3","factsUrl":"https://aoctrl.com/api/mcp/products/GS1SB3","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys GS GS1SB3 fuse switch disconnector body, 3 poles, BS fuse type, rated 630 A at 400 V AC-23B, 10.6 x 16.6 x 11.8 in.","salesMarkdown":"## 630 A Fuse Switch Disconnector for Motor and Power Circuits The GS1SB3 is a 3-pole fuse switch disconnector body from the TeSys GS range, designed for BS-type fuses. Its headline rating is 630 A at 400 V in AC-23B duty — the category for switching motor loads and other highly inductive circuits, where the making and breaking currents are higher than resistive loads. That 630 A figure at 40 °C free air (Ith) is the thermal current ceiling; the actual operational current (Ie) varies with voltage and duty, reaching 630 A at 400 V AC-23A/B and 500 A at 500 V in the same categories. Rated operational power spans 295 kW at 690 V AC-23A/B up to 400 kW at 690 V AC-23A/B, with intermediate ratings at 400 V and 500 V. The rated insulation voltage (Ui) is 1000 V AC, and the impulse withstand voltage (Uimp) is 12 kV, giving headroom for 690 V line-to-line systems with transient immunity. ## Breaking and Making Capacity — SCCR Coordination Breaking capacity is 5040 A at 400 V AC-23B; making capacity is 6300 A at the same voltage and duty. For fault-current coordination, the short-circuit making capacity (Icm) is rated at 630 kA at 400 V when protected by BS fuses — this is the fuse rating, not the disconnector's own interrupt rating. The disconnector itself is rated to close onto and withstand that fault level, but the fuses do the interrupting. This matters for panel SCCR: the upstream fuse selection governs the overall assembly rating. Standards compliance covers IEC 60947-3 for switch-disconnectors, plus IEC 60269-1 and IEC 60269-2 for the associated fuse systems. The fire-resistance rating is 1760 °F (960 °C) for the body and 1562 °F (850 °C) for the fuse cover per IEC 60695-2-1, which is the glow-wire test — relevant for panel builders needing to meet thermal runaway protection requirements. ## Durability and Environmental Ratings Mechanical durability is 8000 cycles; electrical durability is 1000 cycles in AC-23A/B and 200 cycles in DC-23A/B. The operating temperature range is -4 to 158 °F (-20 to 70 °C), with protective treatment TH (tropicalization) for humid environments. IP20 with terminal cover per IEC 60529 — finger-safe but not sealed against water ingress, so it belongs in a cabinet or enclosure.","metaTitle":"GS1SB3 TeSys GS Fuse Switch Disconnector Body, 630 A, 3P","metaDescription":"Schneider Electric GS1SB3 TeSys GS fuse switch disconnector body, 3 poles, 630 A, BS fuse type, rated 630 A at 400 V AC-23B.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"10.6 in (268 mm)","Width":"16.6 in (421.5 mm)","title":"GS1SB3","Height":"11.8 in (300 mm)","Category":"18402-WORLD SERVICE PARTS(CONTROL ACCESS)","Fuse size":"C1 C2","Fuse type":"BS","Standards":"IEC 60947-3 IEC 60269-1 IEC 60269-2","description":"switch-disconnector fuse body GS1 3 poles - BS - 630 A","Network type":"DC AC","Fire resistance":"1760 °F (960 °C) body IEC 60695-2-1 1562 °F (850 °C) fuse cover IEC 60695-2-1","Making capacity":"6300 A 400 V AC-23B","lifecycle_stage":"current","Mounting Support":"Rail Plate","Range of Product":"TeSys GS","Breaking capacity":"5040 A 400 V AC-23B)","Device short name":"GS1S","Network Frequency":"50/60 Hz","Poles description":"3P","Tightening torque":"Control circuit 389.4 lbf.in (44 N.m) screw terminals Power circuit 389.4 lbf.in (44 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":"8000 cycles","Connections - terminals":"Power circuit bars Power circuit screw terminals 2 0.2 in² (150 mm²) flexible Power circuit screw terminals 2 0.5 in² (300 mm²) flexible","IP degree of protection":"IP20 IEC 60529 with terminal cover)","Type of operating handle":"External right side External frontal","Product or Component Type":"Fuse switch disconnector body","Rated operational power in W":"295 kW 690 V AC-23A) 295 kW 690 V AC-23B) 355 kW 400 V AC-23A) 355 kW 400 V AC-23B) 355 kW 500 V AC-23A) 355 kW 500 V AC-23B) 400 kW 690 V AC-23A) 400 kW 690 V AC-23B)","[Ui] rated insulation voltage":"1000 V AC 50/60 Hz","[Ie] rated operational current":"315 A 690 V AC-23A 315 A 690 V AC-23B 400 A 440 V poles not juxtaposed DC-23A 400 A 440 V poles not juxtaposed DC-23B 400 A 690 V AC-23A 400 A 690 V AC-23B 500 A 500 V AC-23A 500 A 500 V AC-23B 630 A 400 V AC-23A 630 A 400 V AC-23B 630 A 440 V poles not juxtaposed DC-23A 630 A 440 V poles not juxtaposed DC-23B","Ambient Air Temperature for Operation":"-4...158 °F (-20...70 °C)","[Uimp] rated impulse withstand voltage":"12 kV","[Icm] rated short-circuit making capacity":"630 kA 400 V with protection by BS fuses 630 kA rating of associated fuses","[Ith] conventional free air thermal current":"630 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/GS1SB3/switchdisconnector-fuse-body-gs1-3-poles-bs-630-a/"},"ai":{"faq":[{"question":"What are the key ratings of GS1SB3?","answer":"The GS1SB3 is rated 630 A at 400 V AC-23A/B (Ie), with a conventional free-air thermal current (Ith) of 630 A at 104 °F. Breaking capacity is 5040 A at 400 V AC-23B; making capacity is 6300 A at the same condition. Short-circuit making capacity with BS fuses is 630 kA at 400 V. Rated operational power reaches 400 kW at 690 V AC-23A/B."},{"question":"What compliance documentation does GS1SB3 meet?","answer":"The GS1SB3 complies with IEC 60947-3 (switch-disconnectors), IEC 60269-1, and IEC 60269-2 (fuse systems). Fire resistance is tested per IEC 60695-2-1 at 1760 °F (960 °C) for the body and 1562 °F (850 °C) for the fuse cover. IP20 per IEC 60529 with terminal cover."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/GS1SB3","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/GS1SB3 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}}