{"product_id":"a4by1200-55al-circuit-breaker-fuse-amp-trap","title":"A4BY1200-55AL - Mersen 1200A Class L Time-Delay Fuse 600VAC 300VDC 200kAIC Blade Mount","description":" \t\t\t\t\t\t\t\t\t\t\u003ch2\u003eA4BY1200-55AL\u003c\/h2\u003e                                         \u003cbr\u003e \t\t\t\t\t\t\t\t\t\t\u003cb\u003eA4BY1200-55AL\u003c\/b\u003e is a high-performance Class L time-delay fuse designed for robust protection in service entrance, feeder, and circuit breaker applications. This Mersen Amp-Trap® fuse features a 1200A ampere rating, 600VAC\/300VDC voltage rating, and a 200kAIC interrupting capacity at 600VAC, making it ideal for demanding electrical environments. The blade-type connection ensures secure mounting and reliable operation in low-voltage systems. Engineered for continuous duty, the A4BY1200-55AL offers a 4-second minimum time delay at 500% of rated current, allowing it to withstand normal surge conditions while providing effective coordination with ground fault relays. Its cylindrical body and silver-plated copper terminals enhance durability and conductivity, supporting safe and efficient performance in critical power distribution setups. \u003cul\u003e \u003cli\u003ePart Number: A4BY1200-55AL\u003c\/li\u003e \u003cli\u003eManufacturer: Mersen\u003c\/li\u003e \u003cli\u003eSeries: Amp-Trap® A4BY\u003c\/li\u003e \u003cli\u003eFuse Class: Class L\u003c\/li\u003e \u003cli\u003eAmpere Rating: 1200A\u003c\/li\u003e \u003cli\u003eVoltage Rating: 600VAC \/ 300VDC\u003c\/li\u003e \u003cli\u003eInterrupting Rating: 200kAIC at 600VAC, 100kAIC at 300VDC\u003c\/li\u003e \u003cli\u003eMounting Type: Blade\u003c\/li\u003e \u003cli\u003eSpeed\/Characteristic: Time Delay\u003c\/li\u003e \u003cli\u003eConnection\/Terminal Type: Blade\u003c\/li\u003e \u003cli\u003eConnection\/Terminal Material: Silver-Plated Copper\u003c\/li\u003e \u003cli\u003eBody\/Insulating Material: GMG\u003c\/li\u003e \u003c\/ul\u003e At \u003cb\u003eEssential Parts\u003c\/b\u003e, we offer \u003cb\u003efast shipping\u003c\/b\u003e, \u003cb\u003elowest price\u003c\/b\u003e, and \u003cb\u003eexpert support\u003c\/b\u003e to help you get the right product every time. \t\t\t\t\t\t\t\t\t\t\u003cbr\u003e                                          \t\t\t\t\t\t\t\t\t\t\u003ch3\u003e\u003cb\u003eSpecifications\u003c\/b\u003e\u003c\/h3\u003e \t\t\t\t\t\t\t\t\t\t\u003cul\u003e \t\t\t\t\t\t\t\t\t\t\t\u003cli\u003ePart Number: A4BY1200-55AL\u003c\/li\u003e                                             \u003cli\u003eManufacturer : Mersen\u003c\/li\u003e\n\u003cli\u003eBrand : Ferraz Shawmut\u003c\/li\u003e\n\u003cli\u003eCategory : Fuse\u003c\/li\u003e\n\u003cli\u003eItem Subcategory : Low Voltage Fuse\u003c\/li\u003e\n\u003cli\u003eFamily : Amp-Trap\u003c\/li\u003e\n\u003cli\u003eType : A4BY\u003c\/li\u003e\n\u003cli\u003eVoltage : 600\u003c\/li\u003e\n\u003cli\u003eAmperage : 1200\u003c\/li\u003e \t\t\t\t\t\t\t\t\t\t\u003c\/ul\u003e                                         \u003cbr\u003e                                         \u003ch3\u003e\u003cb\u003eProduct Data\u003c\/b\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eUPC : 078200193762\u003c\/li\u003e\n\u003cli\u003eGTIN : 00782001937621\u003c\/li\u003e\n\u003cli\u003eWeight : 0.15 \u003c\/li\u003e\n\u003c\/ul\u003e                                         \u003cbr\u003e                                          ","brand":"Ferraz Shawmut","offers":[{"title":"Re-Certified","offer_id":42912495534239,"sku":"A4BY1200-55AL-ReCert","price":467.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0500\/2349\/7887\/files\/A4BY1200-55AL.png?v=1757938165","url":"https:\/\/essentialparts.com\/products\/a4by1200-55al-circuit-breaker-fuse-amp-trap","provider":"Essential Electric Supply","version":"1.0","type":"link"}