E43B070 - 70Amp Circuit Breaker

E43B070 - 70 Amp Circuit Breaker

The E43B070 molded case circuit breaker provides dependable overcurrent protection for electrical systems that require a 70-amp, 3-pole breaker built on the E43 frame. Designed for compatibility with panelboards and switchboards that use this frame style, it helps maintain the correct form, fit, and function within existing electrical setups. When installed in the right system, this breaker works to protect wiring and connected equipment from overloads and short circuits—helping keep operations running safely and as intended.

With an interrupting rating of 18k A.I.C. at 480VAC and 25k A.I.C. at 240VAC, the E43B070 is commonly used in commercial and industrial distribution systems where three-phase power is present. It is also HACR rated, making it suitable for circuits connected to heating, air-conditioning, and refrigeration equipment where permitted by code. The bolt-on mounting style provides a secure connection to compatible panelboards, and load-side terminals are included, which helps simplify installation and wiring in the field. Molded case breakers in this class were built with durability in mind, making them a practical choice when maintaining electrical infrastructure designed around the E43 frame.

Key Features and Benefits

• 70 Amp Rating: Designed to provide overcurrent protection for circuits requiring a 70-amp breaker.
• 3-Pole Configuration: Suitable for three-phase electrical distribution systems.
• Bolt-On Mounting: Secures directly to compatible panelboards for a stable installation.
• HACR Rated: Approved for circuits serving heating, air-conditioning, and refrigeration equipment where applicable.
• Load-Side Terminals Included: Helps streamline installation and field wiring.
• Molded Case Construction: Built to handle everyday electrical protection duties and designed to last.
• E43 Frame Compatibility: Intended for systems designed around the E43 breaker frame.

Technical Specifications

• Part Number: E43B070
• Breaker Type: Molded Case Circuit Breaker
• Frame Type: E43
• Amperage Rating: 70 Amps
• Poles: 3
• Interrupting Capacity:
  • 18k A.I.C. @ 480VAC
  • 25k A.I.C. @ 240VAC
• Mounting Type: Bolt-On
• Operating Temperature: 40°C
• HACR Rated: Yes
• Included: Load-side terminals
• Approximate Height: 6.35 in.
• Approximate Shipping Weight: 3 lbs

Material Compliance and Certifications

• Industry Standards: The E43B070 molded case circuit breaker is produced in accordance with applicable industry safety and performance standards for molded case circuit breakers used in commercial and industrial electrical distribution.
• HACR Rating: Its HACR rating indicates suitability for HVAC-related circuits where permitted by local electrical codes and system requirements.

Where It Works Best

• The E43B070 is commonly found in electrical systems that rely on E43 frame molded case breakers. It is often used in:
  • Commercial and industrial panelboards and power distribution equipment
  • HVAC and refrigeration circuits requiring HACR-rated breakers
  • Maintenance and replacement projects involving existing E43 breaker installations
  • Facilities maintaining established electrical infrastructure