EJB34070 - 70 Amp Circuit Breaker

EJB34070 - 70 Amp Circuit Breaker

The EJB34070 is a high-performance miniature bolt-on circuit breaker engineered for lighting panelboards and other commercial or industrial low-voltage installations. With a 70 Amp rating and 3-pole configuration, this breaker handles up to 480Y/277 VAC, giving you reliable protection for demanding electrical systems. Its impressive interrupt capacity — 100 kA at 120 VAC — ensures that overloads or short circuits are safely contained, helping to prevent equipment damage and reduce downtime. Built to stand the test of time, it offers durability and dependable performance for years to come.

Key Features and Benefits

• Superior Interrupt Capacity: With a breaking capacity of 100 kA at 120 VAC (and 65 kA at 480Y/277 VAC), the EJB34070 protects your system by quickly cutting off dangerous fault currents, minimizing risk of damage.
• Thermal-Magnetic Trip Unit: Delivers accurate and fast response to overloads or short circuits — safeguarding both wiring and connected devices.
• Durable Construction for Long-Term Use: Engineered for longevity, this breaker can deliver dependable service for decades.
• Simple, Secure Installation: The bolt-on mounting design makes installation quick and straightforward on compatible panelboards.
• 3-Pole Configuration: Ideal for three-phase lighting and distribution circuits, ensuring balanced operation across all phases.

Technical Specifications

• Frame Type: E-Frame
  
• Rated Current: 70 A
  
• Voltage Rating: 480Y/277 VAC maximum
  
• Interrupt Rating: 100 kA @ 120 VAC / 65 kA @ 480Y/277 VAC
  
• Trip Unit Type: Thermal-Magnetic
  
• Poles: 3
  
• Mounting: Bolt-On
  
• Dimensions:
  • Height 5.66 in (143.8 mm) × Width 2.94 in (74.7 mm) × Depth 4.05 in (102.9 mm)
• Weight: 4 lb (1.81 kg)
  
• Operating Temperature: Up to 104°F (40°C)
  

Material Compliance and Certifications

• This circuit breaker is cULus certified, meeting rigorous North American safety standards for reliable performance in commercial and industrial environments.
• It carries an eco-conscious label, reflecting compliance with global environmental standards (including RoHS and REACh), and is manufactured free of mercury — demonstrating commitment to sustainability without sacrificing safety or effectiveness.

Where It Works Best

• The EJB34070 is an excellent choice for commercial and industrial lighting panelboards, especially in offices, retail spaces, warehouses, and manufacturing facilities. Its high interrupt capacity and thermal-magnetic trip unit make it ideal for protecting low-voltage electronic systems, lighting circuits, and three-phase distribution setups — anywhere dependable electrical protection is critical and long-term reliability matters.