Eaton Cutler-Hammer CH240ST 40A 2P 240V Circuit Breaker, Plug-On, Shunt Trip | AmpState

The Eaton Cutler-Hammer CH240ST is a 2-pole, 40-amp, 240-volt circuit breaker engineered for reliable protection in panelboards, load centers, and electrical distribution systems. With its plug-on shunt-trip capability, this device adds a fast, remote-trip safety option to your existing protection scheme, enabling swift shut-off in response to external control signals or safety interlocks.

• Amperage: 40 A
• Poles: 2
• Voltage: 240V
• Type: Plug-On Shunt Trip Circuit Breaker
• Manufacturer: Eaton Cutler-Hammer
• Part Number: CH240ST

Key advantages and practical use cases:

• The shunt-trip coil enables external control to trip the breaker, adding an important safety layer in environments where remote shutdown is required—industrial equipment rooms, electrical distribution panels, and safety-conscious facilities.
• Reliable panelboard compatibility: Designed for seamless replacement in existing panelboards and load centers, helping you maintain a BOM that matches the original part number for streamlined stocking and maintenance.
• Efficient installation for replacements: Plug-on mounting simplifies installation and minimizes downtime when upgrading or replacing worn or obsolete protection devices.
• Trusted brand with long-planned spares: Eaton Cutler-Hammer is a recognized name in electrical protection, and stocking CH240ST ensures you have a compatible, exact-part solution on hand for ongoing maintenance and repairs.

Why this breaker stands out

Unlike standard non-shunt-trip breakers, the CH240ST couples solid electrical protection with remote-control capability, enabling you to coordinate safety shutdowns with other systems, alarms, or building automation. This makes it an especially strong choice for facilities that require rapid, controlled disconnection in response to faults or safety events, without climbing into electrical panels.

Ideal for

• Maintenance teams performing panelboard replacements or BOM-compliant spares stocking
• Electrical contractors seeking a reliable, field-ready CH240ST for installation in existing distribution equipment
• Facility managers who need rapid remote-trip capabilities to enhance safety protocols

If you’re unsure about fit or compatibility with your existing equipment, AmpState is ready to help confirm part-number alignment and installation compatibility. Send us a message to verify that CH240ST matches your panelboard, load center, and distribution setup.