E2040 - 40Amp Circuit Breaker

E2040 - 40 Amp Circuit Breaker

If you’re working with an existing panel that calls for a reliable 2-pole 40 amp breaker, the E2040 is built to meet that exact need—no guesswork, no modifications. This thermal-magnetic circuit breaker is designed to help protect your electrical system from both overloads and short circuits, keeping things running the way they should. With a 10 kA interrupting rating at 120/240 VAC, it meets the demands of many residential and light commercial setups. The fixed, non-interchangeable trip unit maintains consistent operation, while the included load terminals make installation easier. It’s a practical, built-to-last solution when you need the right form, fit, and function for your existing equipment.

Key Features and Benefits

• 2-Pole Design – Covers both lines in 120/240VAC systems for complete circuit protection
• 40 Amp Capacity – Well-suited for standard electrical loads in homes and small businesses
• Thermal-Magnetic Protection – Handles long-term overloads and sudden short circuits
• 10kA Interrupting Rating – Designed to manage typical fault conditions safely
• Fixed Trip Unit – Non-interchangeable design supports consistent, predictable operation
• Load Terminals Included – Helps reduce installation time and extra parts sourcing
• 40°C Rated – Built for use in standard ambient temperature environments
• Exact Replacement Fit – Designed to match compatible panels without alteration

Technical Specifications

• Part Number: E2040
• Poles: 2
• Amperes: 40A
• Voltage Rating: 120/240VAC
• Interrupting Capacity: 10kA
• Trip Type: Thermal-Magnetic
• Frame Type: E
• Trip Unit: Non-interchangeable
• Temperature Rating: 40°C
• Included Components: Load terminals
• Shipping Weight: 2.75 lbs
• Height: 6.0 inches

Material Compliance and Certifications

• Industry Standards: The E2040 circuit breaker is manufactured in accordance with recognized industry safety standards for molded-case circuit breakers.
• UL Standards: It is intended for use in systems that comply with UL requirements and the National Electrical Code (NEC) guidelines.
• Application Note: As always, confirming compatibility with your specific panel and local electrical codes ensures proper application.

Where It Works Best

This breaker fits naturally into residential service panels, small commercial buildings, and light-duty industrial setups where a 2-pole 40-amp breaker is required. It’s especially useful for maintaining or repairing older systems that use E-frame breakers. If your goal is to keep your current setup operating as intended, the E2040 delivers the right balance of fit, function, and dependable protection without overcomplicating the job.