{"product_id":"siemens-bqch2b045-circuit-breaker","title":"Siemens | BQCH2B045 | Circuit Breaker | 45A | 2-Pole | 480V | Bolt-On","description":"\u003cdiv\u003e\n\u003cp\u003eMeet Siemens BQCH2B045 — a purpose-built circuit breaker engineered for demanding industrial and commercial panels. With a 45-amp rating, two poles, and a 480-volt operating capability, this bolt-on device is designed for reliability in retrofit, maintenance, and replacement projects where exact specifications matter.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eKey specifications at a glance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eAmperage: 45 A\u003c\/li\u003e \u003cli\u003ePoles: 2-Pole\u003c\/li\u003e \u003cli\u003eVoltage: 480 V\u003c\/li\u003e \u003cli\u003eMounting: Bolt-On\u003c\/li\u003e \u003cli\u003ePart Number: BQCH2B045\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy choose this Siemens breaker? It’s built to integrate seamlessly into panels that require a bolt-on, 2-pole circuit protection device for 480V systems. The 45A rating makes it a precise fit for circuits that demand controlled current and dependable interruption capability without over-specifying protection. This is ideal for equipment rooms, manufacturing lines, and commercial spaces where consistent protection and quick field replacement matter.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eIdeal use cases\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eRetrofits: upgrade aging or mismatched breakers in 480V systems to a confirmed Siemens reference (BQCH2B045) for reliable protection alignment.\u003c\/li\u003e \u003cli\u003eMaintenance replacements: swap in a like-for-like unit during service outages to minimize downtime and maintain protective coordination.\u003c\/li\u003e \u003cli\u003ePanel refreshes: integrate into bolt-on compatible panels that require a compact, two-pole 480V solution with a clean, secure mounting.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eFit verification and installation tips\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eAlways confirm fit and ratings before ordering. Use the part number BQCH2B045 as the primary compatibility reference.\u003c\/li\u003e \u003cli\u003eEnsure the panel or switchgear accepts bolt-on, 2-pole breakers rated for 480V and 45A to maintain proper protection and electrical coordination.\u003c\/li\u003e \u003cli\u003eFollow standard safety practices: de-energize equipment, lockout\/tagout, and consult panel documentation or a qualified electrician for installation.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eIn scenarios where exact specifications matter for system protection and downtime risk, the Siemens BQCH2B045 delivers a dependable, field-proven solution. It’s more than just a replacement breaker — it’s a targeted, compatible upgrade designed to keep your 480V infrastructure safe and running smoothly.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46427180368034,"sku":"BQCH2B045","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_a0994f42-7fad-49d1-911a-c2784022b8c9.png?v=1765492979","url":"https:\/\/www.ampstate.com\/products\/siemens-bqch2b045-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}