{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"GS1MMB4","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"GS1MMB4","canonicalUrl":"https://aoctrl.com/schneider/GS1MMB4","factsUrl":"https://aoctrl.com/api/mcp/products/GS1MMB4","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys GS, fuse switch disconnector body GS1M, 4 poles, BS fuses, 200 A rated operational current, 160 A breaking capacity at 400 V AC-23B.","salesMarkdown":"It serves as the load-break and isolation point in a distribution or motor feeder circuit, making and breaking current under load per IEC 60947-3. The 200 A rating at 400 V AC-23B (160 A at 690 V with terminal cover) covers motor and resistive loads up to 100 kW at 400 V or 150 kW at 690 V in AC-23 duty. Rated operational current of 200 A at 400 V AC-23B means this body handles the high inrush of motor starting (typically 6–8× FLA) and breaks the load under normal running conditions — it is not a simple disconnect; it is rated for switching duty. Short-circuit withstand of 80 kA (with associated BS fuses) means the body survives a through-fault while the fuse clears it — critical for selective coordination in a panel. Making capacity of 2000 A at 400 V AC-23B covers the peak inrush when closing onto a motor load. The 4-pole configuration (3 phases + neutral or switched neutral) suits three-phase distribution panels where the neutral must be isolated. Mounting on plate or rail (DIN) gives flexibility for enclosure layout. IP20 with terminal cover is touch-safe but not washdown-rated — this lives inside a cabinet, not on the machine face. Designed and tested to IEC 60269-1 (fuse requirements), IEC 60269-2 (fuse for industrial applications), and IEC 60947-3 (switch-disconnectors). The body and fuse cover pass glow-wire tests at 960 °C and 850 °C respectively per IEC 60695-2-1. Protective treatment TH indicates suitability for tropical/humid environments. Rated insulation voltage Ui of 750 V AC and impulse withstand Uimp of 8 kV give headroom for 690 V systems.","metaTitle":"Schneider Electric GS1MMB4 TeSys GS Fuse Switch Disconnector","metaDescription":"Schneider Electric GS1MMB4 TeSys GS fuse switch disconnector body, 4 poles, 200 A rated current, BS type fuses. Obsolete — sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Contactors"],"specifications":{"Depth":"146 mm","Width":"310 mm","Height":"195 mm","Fuse size":"B2 B1","Fuse type":"BS","Standards":"IEC 60269-1 IEC 60947-3 IEC 60269-2","Network type":"AC DC","Fire resistance":"960 °C body conforming to IEC 60695-2-1 850 °C fuse cover conforming to IEC 60695-2-1","Making capacity":"2000 A at 400 V AC-23B","lifecycle_stage":"current","Mounting support":"Plate Rail","Range of product":"TeSys GS","Breaking capacity":"1600 A at 400 V (AC-23B)","Device short name":"GS1M","Network frequency":"50/60 Hz","Poles description":"4P","Tightening torque":"Control circuit: 25 N.m - on screw terminals Power circuit: 25 N.m - on 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 terminals95...240 mm² flexible","IP degree of protection":"IP20 conforming to IEC 60529 (with terminal cover)","Short-circuit withstand":"80 kA","Type of operating handle":"External right side External frontal","Product or component type":"Fuse switch disconnector body","Rated operational power in W":"100 kW at 400 V (AC-23A) 100 kW at 400 V (AC-23B) 140 kW at 500 V (AC-23A) 140 kW at 500 V (AC-23B) 150 kW at 690 V (AC-23A) 150 kW at 690 V (AC-23B)","[Ui] rated insulation voltage":"750 V AC 50/60 Hz","[Ie] rated operational current":"160 A at 690 V with terminal cover AC-23A 160 A at 690 V with terminal cover AC-23B 200 A at 400 V AC-23A 200 A at 400 V AC-23B 200 A at 440 V 2 poles in series per phase DC-23A 200 A at 440 V 2 poles in series per phase DC-23B 200 A at 500 V AC-23A 200 A at 500 V AC-23B 200 A at 690 V with terminal cover AC-23A 200 A at 690 V with terminal cover AC-23B","Ambient air temperature for operation":"-20...70 °C","[Uimp] rated impulse withstand voltage":"8 kV","[Icm] rated short-circuit making capacity":"200 kA at 400 V with protection by BS fuses 200 kA rating of associated fuses","[Ith] conventional free air thermal current":"200 A (at 40 °C)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://www.se.com/au/en/product/GS1MMB4/switchdisconnector-fuse-body-gs1-4-poles-bs-200-a/","alternativesUrl":"https://aoctrl.com/api/mcp/products/GS1MMB4/alternatives.json"},"ai":{"faq":[{"question":"What replaces the GS1MMB4?","answer":"No official successor order code is listed in the lifecycle record. A parametric replacement — same 4-pole BS fuse body, 200 A rating, similar mounting — must be validated against the specific enclosure layout and busbar centres. Contact sourcing with your application details for a cross-reference proposal."},{"question":"What are the key ratings for fit?","answer":"Rated operational current 200 A at 400 V AC-23B (160 A at 690 V with terminal cover). Breaking capacity 1600 A at 400 V AC-23B. Short-circuit withstand 80 kA with associated BS fuses. Rated power up to 100 kW at 400 V or 150 kW at 690 V in AC-23 duty. 4 poles, plate or rail mount, IP20 with terminal cover."},{"question":"What standards does the GS1MMB4 comply with?","answer":"IEC 60269-1, IEC 60269-2, and IEC 60947-3. Glow-wire tested to 960 °C (body) and 850 °C (cover) per IEC 60695-2-1. Protective treatment TH for tropical environments."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/GS1MMB4","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/GS1MMB4 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}}