CHH3225H4 - 225Amp Circuit Breaker

CHH3225H4 - 225Amp Circuit Breaker

The CHH3225H4 is a 225 Amp, 3-pole molded case circuit breaker used in Eaton CHH4 panelboards and loadcenters. In most situations, this is the breaker you’re dealing with when you’re replacing an existing unit in a system that’s already been in service. It’s made for 240VAC three-phase systems, where all three poles need to open together under fault or overload conditions.

This is not a breaker you’re “upgrading” a system with — it’s mainly used to keep an existing setup running the way it was originally designed. If the panel is already CHH4, this unit fits into place without changes, which is why it’s commonly used for maintenance work, repairs, and like-for-like replacements in commercial and facility power systems.

Inside, it uses a non-interchangeable trip unit, meaning the protection settings are fixed at the factory. There’s no swapping parts or adjusting it in the field. That’s often what you want in established systems where the electrical design is meant to stay consistent over time.

With a 42kA interrupting rating at 240VAC, it’s rated to handle fault conditions within its listed limits for CHH4 applications. The 3-pole design makes sure all phases disconnect at the same time, which is standard for three-phase distribution and helps keep the system protected the way it should be.

Key Features and Benefits

• 225 Amp, 3-pole molded case breaker for Eaton CHH4 systems
• Designed for 240VAC three-phase distribution
• Direct replacement fit for existing CHH4 panelboards
• Non-interchangeable trip unit with fixed factory settings
• 42kA interrupting rating at 240VAC
• All poles trip together for balanced protection
• Commonly used for replacement and maintenance work
• Keeps existing panel layout and setup unchanged
• Built for use in properly rated electrical systems

Technical Specifications

• Catalog Number: CHH3225H4
• Product Type: Molded Case Circuit Breaker
• Series / Type: CHH4
• Amperage Rating: 225 Amps
• Poles: 3
• Voltage Rating: 240VAC
• Interrupting Rating: 42kAIC @ 240VAC
• Trip Unit: Non-interchangeable
• Dimensions: 4.13"W x 7.50"L x 3.06"D
• Height: 7.5 in
• Width: 4.13 in
• Depth: 3.06 in
• Approx. Ship Weight: 8.5 lbs

Material Compliance and Certifications

The CHH3225H4 is intended for use in Eaton CHH4 compatible equipment and should be installed according to applicable electrical codes and manufacturer guidelines. Installation should always be handled by a qualified electrician familiar with molded case circuit breaker systems and panelboard safety practices.

Where It Works Best

• Eaton CHH4 panelboards and loadcenters
• 240VAC three-phase electrical systems
• Feeder and branch circuit protection
• Existing installations requiring direct breaker replacement
• Maintenance and repair of installed electrical systems
• Applications where trip settings need to stay fixed
• Systems where maintaining original configuration matters
• Commercial and facility power distribution setups