E42B100 - 100Amp Circuit Breaker

E42B100 - 100 Amp Circuit Breaker

The E42B100 molded case circuit breaker provides dependable overcurrent protection for electrical distribution systems that require a 2-pole, 100 amp breaker in the E42 frame size. Designed for use in compatible bolt-on panelboard installations, this breaker helps protect wiring and connected equipment from overloads and short-circuit conditions while maintaining the proper form and fit for existing systems. The unit carries an interrupting rating of 18kA at 480VAC and 25kA at 240VAC, supporting applications where higher fault currents may be present.

Its molded case construction houses internal components built for long service life under normal operating conditions. The breaker is HACR rated, making it suitable for circuits associated with heating, air-conditioning, and refrigeration equipment when allowed by code. Designed for environments up to 40°C, the E42B100 is commonly used in commercial and industrial electrical panels where maintaining compatibility with existing equipment is important. Load-side terminals are included, helping simplify installation within approved electrical systems. Overall, this breaker serves as a practical form-fit replacement in panelboards designed for the E42 frame bolt-on configuration.

Key Features and Benefits

• 100 Amp rating for branch circuit or feeder protection
• 2-pole design for controlling and protecting two circuits simultaneously
• Bolt-on mounting configuration compatible with panelboards designed for E42 frame breakers
• Interrupting capacity:
  • 18kA at 480VAC
  • 25kA at 240VAC
• HACR rated for heating, air-conditioning, and refrigeration circuits where permitted
• Molded case construction designed for dependable operation
• Load-side terminals included for installation convenience
• 40°C operating temperature rating suitable for common electrical room conditions
• Built to last when properly installed and maintained

Technical Specifications

• Part Number: E42B100
• Breaker Type: Molded Case Circuit Breaker
• Frame Type: E42
• Poles: 2
• Amperage Rating: 100A
• Interrupting Rating:
  • 18kA @ 480VAC
  • 25kA @ 240VAC
• Mounting Style: Bolt-On
• Operating Temperature Rating: 40°C
• HACR Rated: Yes
• Included Components: Load-side terminals
• Approximate Shipping Weight: 2.0 lbs
• Approximate Shipping Height: 6.35 in

Material Compliance and Certifications

• Electrical Safety Standards: The E42B100 circuit breaker is manufactured in accordance with widely accepted electrical safety standards applicable to molded case circuit breakers used in commercial and industrial distribution systems.
• HACR Rating: The HACR rating indicates suitability for heating, air-conditioning, and refrigeration equipment circuits where permitted by electrical code.
• Installation Guidance: Proper installation should always follow the National Electrical Code (NEC) and any applicable local regulations.

Where It Works Best

• The E42B100 2-pole 100A circuit breaker is typically found in commercial buildings, industrial facilities, and institutional electrical systems that utilize panelboards designed for E42 frame bolt-on breakers. Its ratings make it appropriate for feeder circuits, distribution panels, and HVAC-related equipment requiring HACR-rated protection. It is commonly used when maintaining an existing electrical system where matching the original breaker’s size, mounting style, and electrical ratings is necessary for continued operation.