QBHW1040 - 40 Amp Circuit Breaker

QBHW1040 - 40 Amp Circuit Breaker

When your electrical system needs reliable protection without fuss, the Eaton QBHW1040 delivers. This single‑pole, 40‑amp thermal‑magnetic circuit breaker is made for tough commercial and industrial settings where safety and uptime matter most. It’s engineered to handle overloads and short circuits quickly, maintain stability under strain, and give you peace of mind that your equipment (and people) are safe.

Key Features and Benefits

• Dual Protection with Thermal‑Magnetic Trip Mechanisms: combines slow‑blow (thermal) protection for overloads with fast (magnetic) response to instant shorts, giving well‑rounded defense.
• High Interrupting Capacity – 22 kAIC: built to safely stop high fault currents; helps in applications where spikes and surges could otherwise cause serious damage. Eaton+2Elliott Electric Supply+2
• Bolt‑On Mounting Design: makes installation easier and ensures firm, stable fit in panelboards. westburne.ca+1
• Compact Size, Low Weight: with a footprint that works in constrained spaces and a weight around 0.3 lbs, you don’t sacrifice performance for convenience. Eaton+1
• Versatility & HACR Rating: this breaker is rated for heating, air conditioning, and refrigeration equipment, making it a go‑to option across diverse systems. Elliott Electric Supply+1

Technical Specifications

• Amperage Rating: 40 A Eaton+1
• Voltage Rating: 120/240 VAC Eaton+1
• Interrupting Capacity: 22 kAIC Eaton+1
• Number of Poles: Single‑pole Eaton+1
• Trip Type: Non‑interchangeable, thermal‑magnetic Eaton+1
• Mounting Method: Bolt‑on westburne.ca+1
• Dimensions (L × H × W): ~ 3.6 in × 4.7 in × 1.2 in Eaton+1
• Weight: ~ 0.3 lb Eaton+1

Material Compliance and Certifications

• UL Listed: conforms to Underwriters Laboratories safety standards. Eaton
• CSA Certified: meets Canadian Standards Association requirements, which means safer performance under more varied environmental conditions. Eaton+1
• HACR Rated: approved for heating, air conditioning, refrigeration systems; confirms adaptability to specialized HVAC loads. Elliott Electric Supply+1

Where It Works Best

• Manufacturing plants or industrial facilities with heavy machinery or frequent current surges.
• Commercial buildings where HVAC, refrigeration, or heating loads are in use and need solid protection.
• Any panelboard configuration needing a bolt‑on, single‑pole breaker with minimal maintenance.

If you’re looking to safeguard critical equipment from overloads or short‑circuit events, especially in demanding or high‑fault environments, this breaker is built to handle the job without overengineering or overcharging.

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