Eaton CH345 - 45 A, 240 V, 3-Pole Plug-In Circuit Breaker | AmpState

The Eaton CH345 is a 45A, 240V, 3-pole plug-in molded case circuit breaker engineered for dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Its fast plug-in connection enables quick installation and hassle-free replacement, minimizing downtime during service upgrades or routine maintenance.

• Amperage / Voltage: 45A, 240V
• Poles: 3-pole
• Mounting: Plug-in
• Trip technology: Thermal-magnetic trip unit for stable, repeatable protection against overloads and short circuits
• Compatibility: Designed for use in matching OEM load centers and panelboards (CH-series compatible)
• Applications: Suitable for residential, commercial, and light industrial installations requiring reliable three-phase protection

What problems does it solve? When you need quick, reliable protection for 3-phase 240V circuits, the CH345 delivers precise interruption during overloads and rapid response to short circuits, helping prevent damage to wiring and connected equipment while keeping service interruptions to a minimum.

Who is this ideal for? Electrical professionals and installers working on panelboards and load centers that accept Eaton plug-in breakers, spanning new constructions, panel upgrades, and preventive maintenance in homes, offices, retail spaces, and light industrial facilities.

Why choose the CH345 over other breakers? It combines a plug-in form factor for fast, tool-free replacement with a robust thermal-magnetic trip mechanism that provides durable, predictable protection. Its design is aligned with Eaton’s OEM panels, ensuring a secure fit and consistent performance in demanding electrical environments.

Technical snapshot

• Manufacturer: Eaton
• Part number: CH345
• Type: Thermal-magnetic molded case circuit breaker
• Power protection: Branch circuits against overcurrent and short circuits

For technicians building or upgrading panelboards and load centers, the CH345 offers a dependable, straightforward solution that pairs with Eaton’s ecosystem to deliver consistent protection, simple installation, and long-term reliability in 3-phase 240V systems.