Mechanical Interlocking for Transfer Switches

Description

The mechanical interlocking for transfer switches between two MasterPacT MTZ1 devices prevents the two interlocked devices from closing at the same time.

VBP Pushbutton Locking Accessory

The VBP pushbutton locking accessory provides redundancy in addition to the mechanical interlocking system.

The use of the pushbutton locking cover is mandatory on each interlocked MasterPacT MTZ device. The closing pushbuttons of the interlocked devices must be locked by padlocks sharing one key to help avoid simultaneous closing orders of interlocked devices.

For more information about the pushbutton locking cover, refer to VBP Pushbutton Locking Accessory

Mechanical Interlocking Between Two Devices

Two devices can be mechanically interlocked by cables or by rods so that both devices cannot be closed at the same time.

For information on the accessory installation, consult the instruction sheet on the Schneider Electric website:

• For Interlocking by cables: NVE35522

• For Interlocking by rods: NVE35523

IVE Electrical Interlocking Unit

Electrical interlocking between MasterPacT MTZ devices can be done using the IVE electrical interlocking unit or by using dedicated wiring. The IVE unit is suitable for two devices only. For three devices, dedicated wiring is required to perform the electrical interlocking.

For information on the accessory installation, consult the instruction sheet on the Schneider Electric website: 51201201AA