{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"GS1MMBR4","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"GS1MMBR4","canonicalUrl":"https://aoctrl.com/schneider/GS1MMBR4","factsUrl":"https://aoctrl.com/api/mcp/products/GS1MMBR4","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys GS series, fuse switch disconnector body, GS1MMBR4, 4 poles, 200 A, BS fuse type, 1600 A breaking capacity at 400 V AC-23B.","salesMarkdown":"It serves as a manual disconnect and protection point in a power distribution circuit, rated for both AC and DC networks. Its headline rating is 200 A conventional free-air thermal current (Ith) at 40 °C, which translates to 200 A at 400 V AC-23A/AC-23B and 160 A at 690 V AC-23A/AC-23B with the terminal cover fitted. This means it handles motor starting and switching loads up to 200 A in a 400 V panel, but the 690 V rating drops to 160 A — a key derating to watch when specifying for higher-voltage lines. Rated operational power reaches 100 kW at 400 V (AC-23A/B) and 150 kW at 690 V (AC-23A/B). Dimensions are 310 mm wide, 225 mm deep, and 195 mm high — a substantial footprint that needs a clear bay in the panel layout. Power circuit connections accept bars or screw terminals for 95 to 240 mm² flexible cable. Control circuit and power circuit terminals both require 25 N·m tightening torque — a single torque spec simplifies installation but demands a calibrated tool. ## Standards and environmental specs Compliant with IEC 60269-1, IEC 60269-2, and IEC 60947-3 — the core standards for fuse switch disconnectors. Rated insulation voltage is 750 V AC, impulse withstand voltage is 8 kV, and short-circuit withstand is 80 kA. Operates from -20 to 70 °C, stores from -40 to 80 °C. Fire resistance is 960 °C for the body and 850 °C for the fuse cover (per IEC 60695-2-1). Protective treatment is TH (tropicalized) for humid environments. Mechanical durability is 10,000 cycles; electrical durability is 1,000 cycles for AC-23A/B and 200 cycles for DC-23A/B. These cycle counts are modest — this is a disconnect for occasional switching, not a daily-use contactor.","metaTitle":"Schneider Electric GS1MMBR4 TeSys GS Fuse Switch Disconnecto","metaDescription":"Obsolete GS1MMBR4 fuse switch disconnector body, 4 poles, 200 A rated current, BS fuse type. Sourced to order against RFQ. Breaking capacity 1600 A at 400 V AC-23B.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Contactors"],"specifications":{"Depth":"225 mm","Width":"310 mm","Height":"195 mm","Fuse size":"B1 B2","Fuse type":"BS","Standards":"IEC 60269-2 IEC 60947-3 IEC 60269-1","Network type":"DC AC","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","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 operation -40...80 °C storage","[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/nl/en/product/GS1MMBR4/switchdisconnector-fuse-body-gs1-4-poles-bs-200-a/","alternativesUrl":"https://aoctrl.com/api/mcp/products/GS1MMBR4/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings for the GS1MMBR4?","answer":"Rated operational current is 200 A at 400 V AC-23A/B (160 A at 690 V with terminal cover). Breaking capacity is 1600 A at 400 V AC-23B. Making capacity is 2000 A at 400 V AC-23B. Short-circuit withstand is 80 kA. Rated operational power reaches 150 kW at 690 V AC-23A/B."},{"question":"What standards does the GS1MMBR4 comply with?","answer":"It complies with IEC 60269-1, IEC 60269-2, and IEC 60947-3. Rated insulation voltage is 750 V AC, impulse withstand voltage is 8 kV, and IP20 protection per IEC 60529 with terminal cover fitted."},{"question":"How do I source the GS1MMBR4 given it is obsolete?","answer":"Since the part is obsolete, it is sourced to order against an RFQ through surplus or broker channels. There is no official successor order code listed, so a parametric substitute search may be necessary for a direct replacement."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/GS1MMBR4","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/GS1MMBR4 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}}