This K1 voltmeter switch is ideal for switching between phase-phase and phase-neutral voltage measurements on a switchboard, has a rated voltage of 690V AC.::It has a square shape and a metallic legend with black marking.::It is IP65 and installs with screws.::This voltmeter phase switch offers the maximum mechanical and electrical robustness of its class, for prolonged operation without maintenance.::Its high IP allows for handling of panel operations in very dusty and wet environments, including outdoors.