{"product_id":"abb-e4s-ms-4000a-air-circuit-breaker","title":"ABB E4S MS 4000A Air Circuit Breaker For Industrial Low Voltage Power Distribution Systems","description":"\u003cdiv\u003e\n\u003cp\u003eThe ABB E4S\/MS 4000A Air Circuit Breaker is a heavy‑duty solution crafted to protect and switch low‑voltage power distribution systems in demanding industrial and commercial environments. Built to excel where reliability and precise protection are non‑negotiable, this 4000A breaker is designed to handle the rigors of main incoming feeders and critical switchboards with confidence.\u003c\/p\u003e \u003ch3\u003eWhy the E4S\/MS 4000A stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eHigh current capability\u003c\/strong\u003e: 4000A current rating makes it ideal for large distribution boards and main feeders where substantial fault current can occur.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAdjustable trip settings\u003c\/strong\u003e: Fine‑tune protection to match your load profile and coordination strategy, helping to minimize nuisance tripping while safeguarding equipment.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRobust, purpose‑built design\u003c\/strong\u003e: Engineered to withstand industrial conditions, deliver consistent switching performance, and endure frequent operation without compromise.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReliable protection and switching\u003c\/strong\u003e: Fast, controlled disconnection of faulty circuits to minimize damage, downtime, and safety risks in critical power paths.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSeamless integration with low‑voltage systems\u003c\/strong\u003e: Part of the ABB E4S\/MS family, optimized for dependable operation within modern power distribution architectures.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal applications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMain incoming feeders at large facilities and factories\u003c\/li\u003e \u003cli\u003eCritical power distribution rooms and switchboards in industrial plants and commercial complexes\u003c\/li\u003e \u003cli\u003eUpgrades and retrofits of LV distribution systems requiring adjustable protection and high interruption capacity\u003c\/li\u003e \u003cli\u003eSystems where predictable protection coordination reduces downtime during faults\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhat problems it solves\u003c\/h3\u003e\n\u003cp\u003eWhen electrical faults occur, the E4S\/MS 4000A isolates the affected circuit rapidly and reliably, protecting transformers, motors, and other sensitive equipment from damage. Its adjustable trip settings enable precise coordination with upstream protection, helping to prevent unnecessary outages while maintaining safety and continuity of service in large, load‑heavy environments.\u003c\/p\u003e \u003ch3\u003eUse cases in real‑world scenarios\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eA manufacturing line experiences a phase fault; the 4000A breaker detects the disturbance and clears the fault without pulling down upstream systems, keeping the rest of the plant online.\u003c\/li\u003e \u003cli\u003eA data‑center or data‑heavy facility relies on robust LV protection at the main feeder to prevent a single fault from cascading into downtime across aisles and racks.\u003c\/li\u003e \u003cli\u003eAn office‑heavy commercial building expands its distribution network; the E4S\/MS 4000A offers scalable protection with adjustable settings to align with new load profiles.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eSpecifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eModel \/ Part Number:\u003c\/strong\u003e E4S\/MS\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCurrent Rating:\u003c\/strong\u003e 4000A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBreaker Type:\u003c\/strong\u003e Air Circuit Breaker\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical considerations and tips\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eCoordinate the E4S\/MS 4000A’s adjustable trip settings with upstream protection to balance selectivity and safety.\u003c\/li\u003e \u003cli\u003eEnsure proper installation by qualified electrical professionals following local codes and ABB installation guidelines.\u003c\/li\u003e \u003cli\u003ePlan for reliable maintenance checks on contact performance and mechanical operation to sustain long‑term reliability in harsh environments.\u003c\/li\u003e \u003cli\u003eUse as a core component in LV distribution upgrades where high interruption capacity and robust switching are required to protect high‑value equipment.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eChoose the ABB E4S\/MS 4000A Air Circuit Breaker for durable, precise protection in demanding low‑voltage power distribution systems. It’s engineered to support reliable operation of main feeders and critical switchboards, delivering peace of mind in industrial and commercial facilities where uptime matters.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"ABB","offers":[{"title":"Default","offer_id":46390488236194,"sku":"E4S\/MS","price":16798.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_bd6cbf4a-e994-4ed5-81be-61c7ff90686b.png?v=1765373741","url":"https:\/\/www.ampstate.com\/products\/abb-e4s-ms-4000a-air-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}