Overload relay for Kobelco KNW-A1-F/H

The V4461-1 overload relay serves as an electrical protection device within the crane's control system. Its primary function involves monitoring the current flow through a circuit and automatically interrupting the connection if an overload is detected. By identifying excess current, this component helps prevent damage to electrical motors and other sensitive control hardware, maintaining the integrity of the machine's electrical architecture. It operates at a voltage of 120 VAC.

This component is compatible with the Kobelco KNW-A1-F/H crane model, specifically covering serial numbers from 99F0388 to 392. It is engineered to function within the specific electrical parameters required for these machines, ensuring that the control circuits remain within safe operating limits during use.

Overload relays function as safety switches that react to thermal or magnetic changes caused by current spikes. In heavy machinery, these devices are integrated into motor starter circuits to protect against stalled motors or short circuits. By breaking the circuit when current exceeds a set threshold, the relay prevents overheating and potential failure of the electrical system components, ensuring the machine remains operational and protected from electrical faults.