{"id":9427672531181,"title":"Siemens MBK100A 100-Amp Main Circuit Breaker for Use in Ultimate Type Load Centers","handle":"siemens-mbk100a-100-amp-main-circuit-breaker-for-use-in-ultimate-type-load-centers","description":"\u003ch3\u003eSiemens MBK100A 100-Amp Main Circuit Breaker for Use in Ultimate Type Load Centers\u003c\/h3\u003e\n\u003cp id=\"b\"\u003eSiemens main breaker kits are used to convert the Ultimate\ntype of main lug load centers to main breaker load centers, or can be used as\na replacement main breaker in main breaker type Ultimate load centers.\nUltimate load centers are the current load center in production and went into\nproduction in 2002. Check the load center wiring diagram for confirmation.\nSiemens strongly recommends against the use of \"used\" breakers. The\ninstallation of used breakers in a Siemens panel will void the warranty on the\npanel. Siemens does not sell used breakers and has not approved any 3rd party\nsellers to do so. From the Manufacturer SIEMENS main breaker kits are used to\nconvert the Ultimate type of main lug load centers to main breaker load\ncenters, or can be used as a replacement main breaker in main breaker type\nUltimate load centers. Ultimate load centers are the current load center in\nproduction and went into production in 2002. Check the load center wiring\ndiagram for confirmation.\u003c\/p\u003e \n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n \u003cul class=\"a\"\u003e\n \u003cli\u003e100-Amp\u003c\/li\u003e\n \u003cli\u003eMain breaker kit\u003c\/li\u003e\n \u003cli\u003eBolt-on type\u003c\/li\u003e\n \u003cli\u003eFor use with 100 or 125-Amp Ultimate type load centers\u003c\/li\u003e\n \u003cli\u003eUL listed\u003c\/li\u003e\n \u003c\/ul\u003e","published_at":"2026-07-09T22:13:19+10:00","created_at":"2026-07-09T20:18:22+10:00","vendor":"SIEMENS","type":"Thermal-Magnetic Circuit Breakers","tags":["home_improvement_July2026"],"price":26300,"price_min":26300,"price_max":26300,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":50261440987373,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"B005D6DHQK","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Siemens MBK100A 100-Amp Main Circuit Breaker for Use in Ultimate Type Load Centers","public_title":null,"options":["Default Title"],"price":26300,"weight":481,"compare_at_price":null,"inventory_management":"shopify","barcode":"783643387980","requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}],"images":["\/\/leoforward.com\/cdn\/shop\/files\/B005D6DHQK.jpg?v=1783592304","\/\/leoforward.com\/cdn\/shop\/files\/81WsxHtomSL.jpg?v=1783592304"],"featured_image":"\/\/leoforward.com\/cdn\/shop\/files\/B005D6DHQK.jpg?v=1783592304","options":["Title"],"media":[{"alt":null,"id":40823275421933,"position":1,"preview_image":{"aspect_ratio":0.677,"height":2100,"width":1422,"src":"\/\/leoforward.com\/cdn\/shop\/files\/B005D6DHQK.jpg?v=1783592304"},"aspect_ratio":0.677,"height":2100,"media_type":"image","src":"\/\/leoforward.com\/cdn\/shop\/files\/B005D6DHQK.jpg?v=1783592304","width":1422},{"alt":null,"id":40823275454701,"position":2,"preview_image":{"aspect_ratio":0.765,"height":1653,"width":1265,"src":"\/\/leoforward.com\/cdn\/shop\/files\/81WsxHtomSL.jpg?v=1783592304"},"aspect_ratio":0.765,"height":1653,"media_type":"image","src":"\/\/leoforward.com\/cdn\/shop\/files\/81WsxHtomSL.jpg?v=1783592304","width":1265}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eSiemens MBK100A 100-Amp Main Circuit Breaker for Use in Ultimate Type Load Centers\u003c\/h3\u003e\n\u003cp id=\"b\"\u003eSiemens main breaker kits are used to convert the Ultimate\ntype of main lug load centers to main breaker load centers, or can be used as\na replacement main breaker in main breaker type Ultimate load centers.\nUltimate load centers are the current load center in production and went into\nproduction in 2002. Check the load center wiring diagram for confirmation.\nSiemens strongly recommends against the use of \"used\" breakers. The\ninstallation of used breakers in a Siemens panel will void the warranty on the\npanel. Siemens does not sell used breakers and has not approved any 3rd party\nsellers to do so. From the Manufacturer SIEMENS main breaker kits are used to\nconvert the Ultimate type of main lug load centers to main breaker load\ncenters, or can be used as a replacement main breaker in main breaker type\nUltimate load centers. Ultimate load centers are the current load center in\nproduction and went into production in 2002. Check the load center wiring\ndiagram for confirmation.\u003c\/p\u003e \n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n \u003cul class=\"a\"\u003e\n \u003cli\u003e100-Amp\u003c\/li\u003e\n \u003cli\u003eMain breaker kit\u003c\/li\u003e\n \u003cli\u003eBolt-on type\u003c\/li\u003e\n \u003cli\u003eFor use with 100 or 125-Amp Ultimate type load centers\u003c\/li\u003e\n \u003cli\u003eUL listed\u003c\/li\u003e\n \u003c\/ul\u003e"}