E41B020 - 20Amp Circuit Breaker

E41B020 - 20 Amp Circuit Breaker

The E41B020 molded case circuit breaker is a 1-pole, 20-amp breaker designed to provide dependable circuit protection in electrical distribution systems operating at up to 277VAC. Built on the E41 frame, this bolt-on breaker is intended for installations where consistent overcurrent protection and compatibility with existing panelboard systems are required. With an interrupting capacity of 22kA at 277VAC and 25kA at 120VAC, the E41B020 helps protect conductors and equipment from overloads and short circuits. It is HACR rated and suitable for use in heating, air conditioning, and refrigeration equipment circuits where that designation is specified. Designed for operation in environments up to 40°C, this molded case circuit breaker includes load-side terminals for straightforward installation. Its form, fit, and electrical ratings make it a practical replacement option for maintaining legacy electrical systems that rely on E41-frame breakers. Like many molded case breakers built during this era, it was manufactured with durability in mind and intended for long service life in properly maintained systems.

Key Features and Benefits

• 1-Pole, 20 Amp Configuration – Provides dedicated overcurrent protection for single-phase branch circuits.
• Bolt-On Mounting Design – Securely attaches to compatible panelboards to maintain stable electrical connections.
• High Interrupting Capacity – Rated 22kA at 277VAC and 25kA at 120VAC for reliable fault interruption.
• E41 Frame Compatibility – Designed to match the physical and electrical characteristics of E41-frame breaker spaces.
• HACR Rated – Suitable for circuits serving heating, air conditioning, and refrigeration equipment.
• Includes Load-Side Terminals – Helps streamline installation and connection to outgoing conductors.
• Built for Longevity – Manufactured with durable molded case construction typical of breakers designed for extended service life.

Technical Specifications

• Part Number: E41B020
  
• Product Type: Molded Case Circuit Breaker
  
• Frame Type: E41
  
• Number of Poles: 1
  
• Current Rating: 20 Amps
  
• Interrupting Rating:
  • 22kA @ 277VAC
  • 25kA @ 120VAC
• Mounting Type: Bolt-On
  
• Operating Temperature Rating: 40°C
  
• HACR Rated: Yes
  
• Included Connections: Load-side terminals
  
• Approximate Shipping Weight: 1.0 lb
  
• Approximate Shipping Height: 6.35 in
  

Material Compliance and Certifications

• HACR Rated for heating, air conditioning, and refrigeration circuit applications where permitted.
• Manufactured in accordance with industry practices for molded case circuit breakers used in commercial and industrial electrical distribution systems.
• Designed for use within properly rated panelboards and electrical assemblies consistent with applicable electrical codes and installation standards.

Where It Works Best

• The E41B020 circuit breaker is commonly used in commercial buildings, industrial facilities, and institutional electrical systems where E41-frame bolt-on breakers are specified. It is well-suited for maintaining or servicing existing panelboards and legacy electrical distribution equipment that require a 20-amp, single-pole breaker with the same physical configuration and interrupting capacity. Typical applications include branch circuit protection for lighting systems, receptacle circuits, and HVAC-related equipment where HACR-rated breakers are required. Its compatibility with E41-frame installations makes it a practical option when maintaining systems designed around this breaker format.