Eaton / Cutler-Hammer PDD23G0125TFFL Molded Case Circuit Breaker

Its rated current is 125A. Use that rating when coordinating the circuit load, conductor ampacity and required overcurrent protection.

Use the 240VAC rating to check the circuit's operating voltage. Evaluate voltage and interrupting capacity separately, since the voltage rating alone does not determine whether the breaker can interrupt the available fault current.

The interrupting rating is 65kA at 240VAC. Compare it with the available fault current at the installation point; the available fault current must not exceed the applicable interrupting rating.

LI provides long-time overload and instantaneous short-circuit protection. The thermal element responds to overloads, while the magnetic element responds to short circuits. Both thermal and magnetic settings are fixed, so select it where field adjustment is not needed.

The conductor range is 14 AWG through 1/0 AWG, and the load-side connection uses a standard lug. Choose a conductor within that range while also satisfying the circuit's ampacity requirements; terminal acceptance alone does not determine conductor ampacity.

The breaker body is 6 in high, 4.12 in wide and 3.5 in deep. Use all three dimensions when planning space for the breaker, conductor routing and termination work.

The operating temperature range is -4 to 158 °F. Check the temperature expected at the breaker's location during operation and keep it within that range.

The Eaton PDD23G0125TFFL has 3 poles. Pole count determines how many circuit conductors the breaker can interrupt, so selection should account for the conductors requiring protection.