Eaton Cutler-Hammer CHB340 40A 3P 240V Circuit Breaker, Bolt-On | AmpState

The Eaton Cutler-Hammer CHB340 is a 40 A, 3-pole, 240 V bolt-on circuit breaker engineered for reliable protection in panelboards, load centers, and electrical distribution systems. With a direct part-number match in mind, this unit is an ideal replacement or spare for environments where uptime matters.

Designed for fast, secure installation, the bolt-on mounting provides a sturdy connection within compatible enclosures. The CHB340’s 3-pole configuration supports balanced 3-phase systems, ensuring synchronized protection across all legs of your circuit.

• Amperage: 40 A
• Poles: 3
• Voltage: 240 V
• Mounting: Bolt-On
• Manufacturer: Eaton Cutler-Hammer
• Part Number: CHB340

Who is this for? Maintenance teams stocking spare inventory, panel builders specifying exact part numbers, and facilities managers responsible for dependable electrical protection in commercial and light industrial settings.

Where it fits: use in panelboards, load centers, and electrical distribution systems that require a 3-pole 240 V protection device. It’s a precise match for installations that call for the CHB340 part, keeping upgrade paths and retrofits straightforward.

Why this matters: a direct part-number match minimizes compatibility questions, reduces downtime during swaps, and ensures the correct protection rating for your 40 A circuits. The bolt-on design also supports easier field service in compact enclosures where plug-on breakers aren’t an option.

Practical tips: verify your enclosure accepts bolt-on Eaton breakers and that the CHB340 is the correct 3P 240V specification for your distribution scheme. If you’re unsure about fit or compatibility, AmpState is ready to help confirm a precise match—just send the part number CHB340 and your panel details, and we’ll confirm compatibility.

Availability: This CHB340 circuit breaker is available from AmpState, ready to ship as a direct replacement or spare for ongoing maintenance programs.