{"product_id":"thomas-betts-qcb40-circuit-breaker","title":"Thomas \u0026 Betts | QCB40 | Circuit Breaker | 2-Pole","description":"\u003cdiv\u003e\n\u003cp\u003eThe Thomas \u0026amp; Betts QCB40 2-Pole Circuit Breaker is a genuine, drop-in replacement designed for maintenance, retrofit, and replacement projects where exact specifications matter. Built to fit in panels that accept the QCB40 family, this two-pole device delivers dependable protection for two circuits with the reliability you expect from an OEM component.\u003c\/p\u003e \u003ch3\u003eKey strengths\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eTwo-pole protection\u003c\/strong\u003e provides coordinated disconnection for both conductors, helping maintain safe, reliable circuit isolation in dual-wire applications.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eExact-match reference\u003c\/strong\u003e using the part number QCB40 reduces guesswork and compatibility risk, ensuring the device matches your original equipment.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM reliability\u003c\/strong\u003e Thomas \u0026amp; Betts engineering delivers consistent trip characteristics and durable construction suitable for demanding environments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaintenance, retrofit, and replacement ready\u003c\/strong\u003e designed to integrate with existing panels that support the QCB40 family, preserving original wiring schemes and labeling.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eCompatibility and ordering notes\u003c\/h3\u003e\n\u003cp\u003eNotes: Confirm fit and ratings before ordering. The part number is the best reference for compatibility with your panel. If in doubt, verify that your panel model supports the QCB40 2-Pole configuration and that the amperage and interrupting ratings align with your system’s protection requirements.\u003c\/p\u003e \u003ch3\u003eIdeal use scenarios\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eUpgrading legacy panels that originally used QCB40 components during routine maintenance or lifecycle replacements.\u003c\/li\u003e \u003cli\u003eRetrofit projects where a like-for-like 2-pole breaker is required to maintain panel labeling, trip characteristics, and wiring schematics.\u003c\/li\u003e \u003cli\u003eRepairs in facilities or equipment fleets that rely on consistent, manufacturer-approved parts for long-term reliability.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical installation tips\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003ePower down the distribution panel and follow proper lockout\/tagout procedures before removing or installing the breaker.\u003c\/li\u003e \u003cli\u003eMatch the exact part number (QCB40) and confirm the panel’s acceptance of this 2-pole configuration to ensure a clean fit.\u003c\/li\u003e \u003cli\u003eInspect mounting terminals and wiring for integrity and cleanliness to prevent loose connections or improper seating.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eFor reliable, compatible protection in your two-pole circuits, the Thomas \u0026amp; Betts QCB40 2-Pole Circuit Breaker offers a precise, vendor-approved solution that simplifies maintenance and retrofit projects while preserving system safety and performance.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Thomas \u0026 Betts","offers":[{"title":"Default Title","offer_id":46426601947298,"sku":"QCB40","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_16d3a2fb-5d93-424c-9206-5031ec4b178f.png?v=1765492977","url":"https:\/\/www.ampstate.com\/products\/thomas-betts-qcb40-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}