Siemens 3VA4145-6ED14-0AA0 Molded Case Circuit Breaker

The 45A rated current is the basis for selecting this breaker for overcurrent protection. Coordinate that rating with the circuit load and conductor sizing requirements.

The rated voltages are 120VAC, 277VAC and 347VAC. Match the circuit voltage to an applicable voltage rating, and evaluate interrupting capacity separately.

At 277V, the breaker has a 65kAIC interrupting rating. Compare that rating with the available fault current at the installation point to ensure the breaker has adequate interrupting capacity.

Both the thermal and magnetic trip settings are fixed. Select this breaker when fixed trip behavior meets the circuit's protection requirements rather than when field-adjustable settings are needed.

The 1-pole construction interrupts one circuit conductor. Choose it where the circuit design requires single-pole overcurrent protection.

The conductor range is 8-3/0 AWG, and the load-side connection uses a lug. Select a conductor within that range while also meeting the circuit's conductor sizing requirements.

The breaker measures 5.09 in high, 1 in wide and 2.96 in deep. Use these dimensions to plan the space occupied by the breaker body.

The thermal element provides time-delayed overload protection, while the magnetic element responds instantaneously to short-circuit current. LI means long-time and instantaneous protection, helping you select this breaker for overload and short-circuit protection.