1Prevent Power Depletion: The battery disconnect switch provides a power outage function to the electrical system, helping to prevent battery depletion, and is safe and efficient. 2Protect Electrical System: The high current battery disconnect switch can protect the power supply, prevent leakage, play a protective role, can isolate and protect the electrical system. 3Rugged Housing: The durable iron housing protects the internal components of the switch, enabling it to be used in the harshest conditions and protects cut off switch. 4Lockable: The battery disconnect switch is equipped with fixed keyholes to prevent safety accidents caused by miscontact. Disconnect the battery safely when the car, boat or Rv is not in use. 5Easy to Install: This battery isolator switch with a panel is easy to install and features an on/off indicator that makes a clear clicking sound when turned on and off.