The following interlocks are provided for the Horizontal centre break disconnectors.
A Mechanical constructional interlock between the Main and earth switch.
An electro-mechanical castell key type interlock between Disconnector and earth
switch where earth switch is specified.
Electro mechanical castell Key Interlock between electrical and manual operation
in motor operating mechanism.
Further Terminal are Provided in the electrical control circuit of the motor operating
mechanism for customer to wire in external interlocks.
Pantograph disconnector can be supplied by us with or without Earth switches. Earth
switches where supplied are mounted an adaptor fixed to the support structure.
In case Pantograph Disconnector with double earth switch are required, we can offer
pantograph disconnector with single earth switch additional separately mounted busbar
Pantograph type disconnectors are generally single pole operated disconnectors and
can be electrically ganged to ensure three pole operation of the disconnector.