{"product_id":"siemens-qjh22b100-circuit-breaker","title":"Siemens | QJH22B100 | Circuit Breaker | 100A | 2-Pole | 240V | 22kA | Bolt-On","description":"\u003cdiv\u003eSiemens QJH22B100 is a bolt-on, two-pole circuit breaker designed for reliable overcurrent protection in 240V electrical systems. Built to meet demanding retrofit and replacement needs, this 100-amp unit combines solid construction with a straightforward installation that keeps your panel running smoothly. Key specifications at a glance\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 100A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 2-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 240V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eInterrupting rating:\u003c\/strong\u003e 22kA\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting style:\u003c\/strong\u003e Bolt-On\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart reference:\u003c\/strong\u003e QJH22B100\u003c\/li\u003e\n\u003c\/ul\u003e Why this unit stands out\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eReliable, proven protection:\u003c\/strong\u003e The 22kA interrupting capacity means strong fault current handling, helping protect wiring and connected equipment from dangerous surges.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting:\u003c\/strong\u003e Designed for solid, vibration-resistant attachment in compatible Siemens panelboards, making swaps and upgrades cleaner and faster.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePerfect for retrofit and replacement:\u003c\/strong\u003e When upgrading or maintaining older installations, this 100A, 2-pole breaker delivers consistent performance in Siemens configurations.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eClear part reference for compatibility:\u003c\/strong\u003e The QJH22B100 designation is your best reference when cross-checking fit with your existing panel and bus arrangement.\u003c\/li\u003e\n\u003c\/ul\u003e Practical use cases and scenarios\n- Retrofit projects in commercial or industrial panels that use Siemens bolt-on breakers, where upgrading to a higher current rating or restoring protective devices is required.\n- Replacing aging or worn-out breakers in service entrances or subpanels that operate at 240V with 100A circuits.\n- Protecting multi-wire branch circuits typical in shared-neutral configurations, where two-pole protection ensures coordinated shutoffs and safety. Installation considerations\n- Before ordering, verify that your panel accepts bolt-on Siemens breakers and that the bus structure matches the QJH family mounting pattern.\n- Use the part number QJH22B100 as the primary compatibility reference to minimize fit issues.\n- Follow standard safety procedures: power down the panel, use proper PPE, and ensure the main supply is isolated before replacement. Who this is for\n- Electricians and facilities managers working on Siemens-based electrical systems.\n- Property owners performing controlled upgrades or maintenance in commercial environments.\n- Techs focused on long-term reliability and cohesive protection schemes in 240V circuits. What sets it apart from generic alternatives\n- The QJH22B100 is purpose-built for Siemens bolt-on panel systems, delivering a precise fit and predictable performance within that ecosystem.\n- Its 22kA interrupting capacity provides a robust margin for fault currents typical in many commercial applications, translating to improved safety and reduced nuisance tripping in properly matched installations. In short, the Siemens QJH22B100 circuit breaker is a purpose-driven, dependable choice for maintenance, retrofit, and replacement projects where accurate compatibility and solid, bolt-on mounting matter. It’s the right part when you need dependable two-pole protection at 100A in a 240V system, backed by Siemens’ engineering rigor.\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46425632800930,"sku":"QJH22B100","price":734.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_a085eff1-75dd-47ee-b131-4c8df8f0489b.png?v=1765492976","url":"https:\/\/www.ampstate.com\/products\/siemens-qjh22b100-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}