{"product_id":"siemens-qj22b125h-125a-240v-2-pole-bolt-on-circuit-breaker","title":"Siemens QJ22B125H - 125 A, 240 V, 2-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe Siemens QJ22B125H is a rugged, reliable 2-pole bolt-on molded case circuit breaker designed to protect branch circuits in panelboards and load centers. With a 125 A current rating and 240 V operating voltage, this unit delivers dependable overcurrent and short-circuit protection for residential, commercial, and light industrial applications.\u003c\/p\u003e \u003ch3\u003eWhy this breaker stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e provides a rigid, vibration-resistant bus connection, helping maintain consistent protection even in environments with equipment movement or mechanical vibration.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection performance by combining long-term thermal response with fast magnetic trip for momentary short circuits, reducing nuisance trips and protecting downstream devices.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e2-pole design\u003c\/strong\u003e ensures coordinated protection for both conductors, simplifying wiring schemes in panelboards and load centers while providing reliable disconnection for multi-wire branch circuits.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible\u003c\/strong\u003e is designed to work seamlessly with matching Siemens OEM load centers and panelboards, supporting straightforward replacements and system upgrades.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile application\u003c\/strong\u003e suited for residential, commercial, and light industrial environments where dependable branch circuit protection is critical.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhat problems it solves\u003c\/h3\u003e\n\u003cp\u003eWhen you need predictable protection for critical circuits, the QJ22B125H reduces the risk of damage from overloads and short circuits. Its thermal-magnetic mechanism reacts quickly to spikes, while the bolt-on mounting ensures a solid connection that withstands vibration and routine maintenance without looseness or arcing concerns.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eUpgrading or replacing breakers in existing panelboards and load centers that require a 125 A, 240 V, 2-pole solution\u003c\/li\u003e \u003cli\u003eProtecting large branch circuits feeding motors, HVAC equipment, lighting panels, or commercial feeders\u003c\/li\u003e \u003cli\u003eResidential service panels and small-to-mid size commercial electrical rooms needing robust, maintenance-friendly protection\u003c\/li\u003e \u003cli\u003eNew installations where a rugged, bolt-on molded case breaker is preferred for long service life\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eInstallation and compatibility tips\u003c\/h3\u003e\n\u003cp\u003eFor optimal performance, pair the Siemens QJ22B125H with matching OEM load centers and panelboards designed for bolt-on molded case breakers. Ensure correct alignment with the bus and secure mounting to minimize vibration effects. As with all protective devices, verify the device is appropriate for the intended load and follow the panel manufacturer’s installation guidelines to maintain proper trip coordination and system safety.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355160334498,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens_breaker_and_panel_998ceba5-9f76-482f-ab3f-d2f19b884767.png?v=1764689822","url":"https:\/\/www.ampstate.com\/products\/siemens-qj22b125h-125a-240v-2-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}