E43B090L - 90Amp Circuit Breaker

E43B090L - 90 Amp Circuit Breaker

When an electrical system depends on steady, consistent circuit protection, the E43B090L molded case circuit breaker delivers the dependable form, fit, and function needed for compatible installations. Built on the E43 frame platform, this 3-pole, 90-amp breaker is designed to protect three-phase electrical systems from overloads and short circuits while maintaining compatibility with existing equipment that requires this specific frame and rating. With an interrupting capacity of 18kA at 480VAC and 25kA at 240VAC, the breaker helps safeguard distribution systems operating at common commercial and industrial voltages.

Rated for 40°C environments and HACR applications, the E43B090L is often used in systems supporting heating, air conditioning, and refrigeration equipment. The molded case construction provides a durable housing designed for long service life, and the included line and load-side terminals help simplify installation in compatible panels or switchboards. For facilities maintaining or servicing legacy electrical infrastructure, this breaker provides a reliable replacement option built to last and designed to maintain proper system protection.

Key Features and Benefits

• 90 Amp Protection: Designed for circuits requiring dependable 90A overcurrent protection.
• 3-Pole Design: Suitable for three-phase electrical systems found in commercial and industrial environments.
• E43 Frame Compatibility: Maintains correct fit and function for equipment designed around the E43 breaker frame.
• Strong Interrupting Capacity: Rated 18kA at 480VAC and 25kA at 240VAC to handle fault conditions safely.
• HACR Rated: Suitable for heating, air conditioning, and refrigeration system protection.
• 40°C Temperature Rating: Designed for operation in standard electrical equipment environments.
• Included Terminals: Line and load-side terminals are provided for secure and straightforward wiring connections.
• Molded Case Construction: Built to last and designed to provide dependable circuit protection.

Technical Specifications

• Part Number: E43B090L
• Product Type: Molded Case Circuit Breaker
• Frame Type: E43
• Amperage Rating: 90 Amps
• Poles: 3
• Interrupting Rating:
  • 18kA @ 480VAC
  • 25kA @ 240VAC
• Temperature Rating: 40°C
• HACR Rated: Yes
• Included Connections: Line and load-side terminals
• Approximate Height: 6.35 inches
• Approximate Shipping Weight: 3.0 lbs

Material Compliance and Certifications

• Industry Standards: The E43B090L circuit breaker is manufactured in accordance with applicable industry standards for molded case circuit breakers used in power distribution systems.
• HACR Rating: The HACR rating confirms suitability for heating, air conditioning, and refrigeration equipment installations where required by electrical design or code. Proper installation and maintenance help ensure safe and consistent operation within compatible electrical equipment.

Where It Works Best

• Commercial building electrical distribution panels
• Industrial control systems and machinery circuits
• HVAC and refrigeration equipment installations
• Manufacturing and processing facilities
• Service replacements in systems designed for the E43 breaker frame