Cutler-Hammer FDB3060L Series C Industrial Circuit Breaker 60A 3POLES 600V (SKU: 110233)

Manufacturer: Cutler-Hammer (Eaton)
Model / Catalog Number: FDB3060L
Amperage Rating: 60 Amps. This is the maximum continuous current the breaker will allow before it is designed to trip.
Poles: 3-Pole. It is designed to protect a three-phase electrical circuit, simultaneously opening all three "hot" conductors (T1, T2, T3) when a fault occurs.
Voltage Rating: 600V AC or 250V DC. It can be used in systems up to these maximum voltages.
Interrupting Capacity (AIC): This is a critical safety rating indicating the maximum fault current the breaker can safely interrupt without failing or exploding.
18,000 Amps at $240V_{AC}$
14,000 Amps at $480V_{AC}$ and $600V_{AC}$
10,000 Amps at $250V_{DC}$
Wire Compatibility: It is rated for use with both copper (CU) and aluminum (AL) wire, suitable for wire temperatures of 60/75°C.
Terminals: It uses lug terminals to connect the wires. The label provides specific torque requirements for tightening the terminal screws to ensure a safe and secure connection:
Wire Size 14-10 AWG: 35 Lb-in
Wire Size 8 AWG: 40 Lb-in
Wire Size 6-4 AWG: 45 Lb-in
Wire Size 3-4/0 AWG: 50 Lb-in
Frame Type: The FDB designation refers to the breaker's frame size and its standard interrupting capacity. The 14k on the label is a quick reference to its 14,000 Amp interrupting capacity at 480V.

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