Eaton / Cutler-Hammer CH260ST Miniature Circuit Breaker

No. The CH260ST is exclusively designed for Eaton / Cutler-Hammer Type CH load centers, which feature a distinctive copper bus and a 3/4-inch per pole spacing. It is not interchangeable with Type BR (1-inch) breakers or panels from other brands.

The "ST" stands for Shunt Trip. This factory-installed accessory allows the breaker to be opened remotely via an external electrical signal, which is commonly required for emergency stop buttons, fire alarm systems, or equipment interlocks.

Because it includes a factory-installed shunt trip module, this breaker requires three 3/4-inch spaces (2.25 inches total) on the bus bar. This is one more space than a standard 2-pole Type CH breaker.

Yes, it features an internal common trip connection. If an overload or short circuit occurs on either leg of the 240V circuit, both poles will trip simultaneously to disconnect power safely.

The box lugs accept 14 AWG to 2 AWG copper or aluminum wire. Ensure you torque the terminals to the manufacturer's specifications printed on the breaker to prevent loose connections.

Unlike many breakers that trip to a center position, Eaton Type CH circuit breakers trip completely to the OFF position. This clear visual indication helps eliminate confusion when identifying a tripped circuit.

It utilizes a thermal-magnetic trip curve with fixed long-time and instantaneous (LI) functions. This design avoids nuisance tripping on mild overloads while reacting almost instantaneously to severe short-circuit conditions.