ET4036 - 70Amp Circuit Breaker

ET4036 - 70 Amp Circuit Breaker

If you're working on an existing electrical setup, you already know how important it is to find the right match—not something “close enough.” The ET4036 molded case circuit breaker is designed to fit into compatible F-frame systems without forcing changes or workarounds. It delivers 70 amps across a 3-pole configuration, making it a dependable choice for handling three-phase power in commercial and industrial environments. With a 14kA interrupting rating at 480VAC, this breaker is built to do what it’s supposed to do—interrupt fault conditions and help protect the system when issues arise. It’s rated for operation at 40°C, so it holds up in typical working conditions where heat is part of the equation. Simple, functional, and built to last, the ET4036 does its job without overcomplicating things.

Key Features and Benefits

• 70 Amp capacity: for common commercial and industrial applications
• 3-pole design: for balanced three-phase protection
• 14kA interrupting rating at 480VAC: for handling fault conditions
• F frame sizing: for proper fit in compatible equipment
• Molded case construction: designed for long-term use
• Helps maintain existing system design: without modification
• Straightforward replacement: for worn or faulty breakers

Technical Specifications

• Part Number: ET4036
• Amperage: 70A
• Poles: 3
• A.I.C. Rating: 14kA @ 480VAC
• Frame Type: F
• Temperature Rating: 40°C
• Type: Molded Case Circuit Breaker
• Shipping Weight: 4.5 lbs
• Shipping Height: 10.0 inches

Material Compliance and Certifications

• Built in line with standard industry practices: for molded case circuit breakers
• Intended for use in systems: that follow established electrical safety codes
• Suitable for installations requiring compliance: with commonly recognized North American standards (always confirm for your specific setup)

Where It Works Best

You’ll typically find the ET4036 in commercial buildings, industrial facilities, and other environments where the goal is to keep existing equipment running—not redesign it. It works well in distribution panels, machinery, and control systems that rely on F-frame breakers. If you're replacing a unit and need something that fits and functions the same way, this is exactly where it belongs.