They can also be fitted with handles (available separately) for direct operation or door interlocked by installing an extension shaft. All versions have integrated padlock fittings and are available with the highest protection ratings on the market (IP66, IP69K and NEMA 4X).
The door interlock handles are available with shafts of various lengths and, in order to prevent the inclination of very long shafts from causing interference with the doors, an accessory is available to support and perfectly guide the shaft in to the handle while closing the door.
All door interlock handles are compliant with UL508A, which requires that trained personnel is able to inspect the panel when it is switched ON. To enable this, they are equipped with a mechanism to inhibit the mechanical interlock, which makes it possible to open the door even when the switch disconnector/change-over is in ON. This inhibition mechanism can only be enabled with a tool, to prevent involuntary operation.
To satisfy every installation requirement, along with the accessories above mentioned, a range of terminals, auxiliary contacts, terminal covers and phase barriers are also available. The terminals are screw-mounting, while no tools are required to install the other accessories, since they securely snap on so that the installation is quick and easy, and access to the panel for maintenance is guaranteed.