CHH3175H4 - 175Amp Circuit Breaker

CHH3175H4 - 175Amp Circuit Breaker

The CHH3175H4 is a 175 Amp, 3-pole molded case circuit breaker used in your existing CHH4 systems where replacement work is focused on matching what’s already installed. In most cases, it’s a direct swap situation—same frame, same ratings, same footprint—so the panel can stay exactly as it is.

This breaker is rated for 240VAC three-phase applications and is commonly found in feeder circuits, distribution panels, and equipment circuits inside commercial and industrial facilities. These systems are usually already built and in service, so the work comes down to replacing the breaker without changing the rest of the setup.

With a 42kA interrupting rating at 240VAC, the CHH3175H4 is used where the original system design already defines the available fault current. Matching that rating keeps your replacement aligned with the existing electrical conditions.

Like other molded case breakers used in long-running electrical systems, it’s meant for service in properly maintained equipment and is commonly replaced on a like-for-like basis.

Key Features & Benefits

• 175 Amp molded case circuit breaker
• 3-pole CHH4-series design
• 240VAC three-phase application
• 42kA interrupting rating at 240VAC
• Non-interchangeable factory-set trip unit
• Direct replacement for compatible CHH4 breakers
• Maintains existing panel layout and footprint
• Used in commercial and industrial systems
• Common for maintenance and like-for-like swaps

Technical Specifications

• Part Number: CHH3175H4
• Type: CHH4
• Product Category: Molded Case Circuit Breaker
• Amperage Rating: 175 Amps
• Poles: 3
• Voltage Rating: 240VAC
• Interrupting Rating: 42kAIC @ 240VAC
• Trip Unit: Non-Interchangeable
• Dimensions: 4.13"W x 7.50"H x 3.06"D
• Width: 4.13 in.
• Height: 7.50 in.
• Depth: 3.06 in.
• Approximate Shipping Weight: 8.5 lbs

Material Compliance and Certifications

The CHH3175H4 is intended for use in equipment designed to accept compatible CHH4-series molded case circuit breakers. Installation should always be performed by qualified electrical personnel and in accordance with applicable electrical codes and safety standards. Compatibility, ratings, and physical fit should be verified before installation.

Where It Works Best

• Existing CHH4 electrical systems
• Commercial and industrial facilities
• Three-phase distribution systems
• Feeder and branch circuits
• Maintenance and repair work
• Like-for-like breaker replacement
• Systems requiring a 175 Amp, 3-pole breaker
• Installations where original configuration must be maintained