E41B040L - 40Amp Circuit Breaker

E41B040L - 40 Amp Circuit Breaker

The E41B040L molded case circuit breaker is a 1-pole, 40-amp thermal-magnetic breaker designed for use in electrical distribution systems that require dependable circuit protection and compatibility with E41 frame equipment. Built for consistent operation in demanding electrical environments, this breaker provides overcurrent protection to help safeguard conductors and connected equipment. With interrupting capacities of 22kA at 277VAC and 25kA at 120VAC, the E41B040L is suited for applications where controlled interruption of fault currents is essential. This unit includes line-side and load-side terminals, allowing for straightforward installation and integration into existing panelboards and distribution assemblies that utilize the E41 frame format. Designed to operate in environments up to 40°C, the breaker is also HACR rated, making it appropriate for heating, air conditioning, and refrigeration circuits. Its molded case construction and durable internal components reflect the long-lasting build quality typically found in industrial electrical protection devices.

Key Features and Benefits

• 40 Amp Rating: Designed to protect branch circuits requiring a 40A overcurrent protection device.
• 1-Pole Configuration: Suitable for single-phase circuits in compatible electrical systems.
• E41 Frame Compatibility: Form, fit, and functional replacement for equipment designed to accept E41 frame breakers.
• Interrupting Capacity: Rated 22kA at 277VAC and 25kA at 120VAC for effective fault current interruption.
• HACR Rated: Suitable for heating, air-conditioning, and refrigeration equipment circuits.
• Includes Terminals: Comes with both line and load-side terminals to simplify installation.
• Molded Case Construction: Built with durable components designed for long service life in electrical distribution systems.
• 40°C Operational Rating: Designed to operate within standard electrical equipment temperature environments.

Technical Specifications

• Part Number: E41B040L
• Amperage Rating: 40 Amps
• Number of Poles: 1
• Frame Type: E41
• Interrupting Rating (A.I.C.):
  • 22kA @ 277VAC
  • 25kA @ 120VAC
• Temperature Rating: 40°C
• HACR Rated: Yes
• Breaker Type: Molded Case Circuit Breaker
• Included Hardware: Line-side and load-side terminals
• Approximate Ship Weight: 1.0 lb
• Height: 6.35 in

Material Compliance and Certifications

• The E41B040L molded case circuit breaker is manufactured using electrical-grade materials commonly used in industrial and commercial power distribution equipment. Molded case breakers of this type are typically designed to meet applicable industry manufacturing and safety standards for circuit protection devices. Proper installation and use should always follow applicable electrical codes and equipment manufacturer requirements.

Where It Works Best

• This 40A E41 frame circuit breaker is well-suited for use in electrical systems that require a compatible replacement breaker matching the original form and ratings. Typical applications include:
• Commercial and industrial panelboards and distribution panels
• HVAC equipment circuits due to HACR rating
• Electrical distribution systems operating at 120VAC or 277VAC
• Maintenance or repair of existing E41 frame installations
• Facilities where maintaining compatibility with legacy electrical equipment is required