{"product_id":"siemens-mbk100a-100a-240v-2-pole-plug-in-circuit-breaker","title":"Siemens MBK100 A - 100 A, 240 V, 2-Pole Plug-In Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Siemens MBK100A—a 100A, 240V, 2-pole plug-in molded case circuit breaker designed to safeguard branch circuits with precision in panelboards and loadcenters. Built for reliability, this unit delivers fast, secure protection where it matters most, from residential panels to light commercial installations.\u003c\/p\u003e \u003ch2\u003eKey features that matter in real-world installations\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eFast plug-in connection\u003c\/strong\u003e for rapid installation or replacement, minimizing downtime in service panels.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e provides stable, repeatable protection against both overloads and short circuits, even as ambient temperatures shift.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eTwo-pole design\u003c\/strong\u003e ensures both conductors trip together, reducing arc potential and improving overall safety.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM panel compatibility\u003c\/strong\u003e matched to Siemens and compatible with corresponding loadcenters for a seamless upgrade or replacement.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile applications\u003c\/strong\u003e ideal for residential, commercial, and light industrial electrical needs where dependable protection is crucial.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eWhy this breaker makes sense for your panel\u003c\/h2\u003e\n\u003cp\u003eThe MBK100A is purpose-built for dependable branch circuit protection. Its plug-in form factor simplifies retrofits and service calls—you can swap breakers quickly without the complexity of wire termination. The thermal-magnetic trip unit balances sensitivity and stability, delivering predictable interruption behavior that protects wiring, devices, and downstream equipment from damage caused by overcurrent and short circuits. When you’re expanding a panel or consolidating circuits, choosing a breaker that aligns with your existing loadcenter reduces installation risk and downtime.\u003c\/p\u003e \u003ch2\u003eTechnical specifications at a glance\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Siemens\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e MBK100A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage rating:\u003c\/strong\u003e 100A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 240V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNumber of poles:\u003c\/strong\u003e 2\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting style:\u003c\/strong\u003e Plug-in\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eIdeal use cases and who benefits most\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eResidential service panels undergoing capacity upgrades or circuit additions.\u003c\/li\u003e \u003cli\u003eCommercial distribution panels in retail, offices, or light-duty facilities requiring reliable protection for essential circuits.\u003c\/li\u003e \u003cli\u003eLight industrial equipment setups where fast, secure plug-in replacement minimizes downtime.\u003c\/li\u003e \u003cli\u003eAny installation where a robust, two-pole protection strategy reduces arc risk and ensures simultaneous disconnection of both conductors.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003ePractical tips for installation and best results\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eConfirm panelboard compatibility: ensure your loadcenter is designed to accept MBK-series plug-in breakers to guarantee seamless operation.\u003c\/li\u003e \u003cli\u003eInspect alignment and bus connection: proper seating in the bus bars ensures consistent tripping and dependable performance.\u003c\/li\u003e \u003cli\u003ePlan for future expansion: with a 100A rating, map higher-load circuits strategically to balance protection and capacity across the panel.\u003c\/li\u003e \u003cli\u003eFollow safety best practices: disconnect power, verify de-energization, and adhere to local electrical codes during replacement or installation.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eWhy choose Siemens MBK100A over other options\u003c\/h2\u003e\n\u003cp\u003eThis breaker is engineered for quick, tool-free swaps and dependable protection in demanding environments. The plug-in design reduces installation time and potential wiring errors, while the thermal-magnetic trip provides consistent trip performance across a range of operating temperatures. When paired with matching Siemens loadcenters, it delivers a cohesive protection solution that simplifies maintenance, upgrades, and future-proofing your electrical system.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355133300898,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-mbk100-a-100-240-v-2-pole-plug-in-circuit-breaker-ampstate-475.webp?v=1788733976","url":"https:\/\/www.ampstate.com\/products\/siemens-mbk100a-100a-240v-2-pole-plug-in-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}