{"product_id":"siemens-b2125hh-125a-240v-2-pole-bolt-on-circuit-breaker","title":"Siemens B2125HH - 125 A, 240 V, 2-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eIntroducing the Siemens B2125HH — a 125A, 240V, 2-pole bolt-on molded case circuit breaker designed to deliver dependable branch circuit protection in panelboards and loadcenters. Built to withstand real-world use, this device combines rugged mounting with precise protection to keep electrical systems running smoothly in residential, commercial, and light industrial settings.\u003c\/p\u003e \u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e for a rigid, vibration-resistant bus connection that minimizes loose connections and arcing in active panels.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e for stable, repeatable protection performance against overcurrent and short circuits.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible design\u003c\/strong\u003e ensures seamless compatibility with matching Siemens panelboards and OEM loadcenters for a reliable, compliant installation.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatility across applications\u003c\/strong\u003e suitable for residential, commercial, and light industrial environments where dependable protection is essential.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eSpecifications at a glance\u003c\/h3\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 B2125HH\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 125A\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 Bolt-on\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 \u003ch3\u003eWhy it matters for your panel\u003c\/h3\u003e\n\u003cp\u003eIn panelboards and loadcenters, reliable protection is non-negotiable. The Siemens B2125HH couples a robust bolt-on connection with a precise thermal-magnetic trip mechanism, delivering dependable protection that responds quickly to faults while maintaining stable operation during normal loads. This means stronger protection for conductors, devices, and downstream circuits, and fewer unexpected trips due to loose connections or marginal protection.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cp\u003ePerfect for electricians stocking OEM-compatible parts, facility managers maintaining commercial spaces, and homeowners working with Siemens-compatible panels. Whether you're upgrading a panel, replacing a worn breaker, or fitting a new 125A, 240V two-pole protector, the B2125HH delivers a direct, compatible replacement that preserves panel integrity and performance.\u003c\/p\u003e \u003ch3\u003ePractical tips for installation and maintenance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eVerify panelboard compatibility with the B2125HH before installation to ensure proper fit and performance.\u003c\/li\u003e \u003cli\u003eFollow standard safety procedures: power down, lockout\/tagout, and use appropriate personal protective equipment.\u003c\/li\u003e \u003cli\u003eUse the bolt-on mounting as specified to maintain a solid bus connection and minimize vibration-related issues.\u003c\/li\u003e \u003cli\u003eAdhere to Siemens installation guidelines for ongoing reliability and compliance with panel specifications.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhat you gain\u003c\/h3\u003e\n\u003cp\u003eFor professionals and building operators, the Siemens B2125HH translates to dependable overcurrent protection with a straightforward, OEM-aligned upgrade path. It’s a practical, spec-accurate choice when you need a 125A, 240V, 2-pole breaker that integrates cleanly with Siemens panelboards and their ecosystem—delivering consistent protection, ease of replacement, and peace of mind for demanding electrical systems.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349747978402,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-b2125hh-125-a-240-v-2-pole-bolt-on-circuit-breaker-ampstate-347.webp?v=1788720294","url":"https:\/\/www.ampstate.com\/products\/siemens-b2125hh-125a-240v-2-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}