Tmax XT UL Catalogo [EN]

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ACCESSOR I ES

— Interlocks and switching devices

Operating mechanism

XT1 XT2 XT3 XT4 XT5 XT6 XT7 XT7 M

MIR Horizontal

- -

     

Rear mechanical interlock

MIR Vertical

     

Type A (2 CBs)

- -

 

Cable interlocks

Type B, C and D (3 CBs)

 

ATS021 ATS022

       

Automatic transfer switch

       

Rear mechanical interlock This is a support designed for installation on the rear of two circuit-breakers to be interlocked. It prevents the two circuit-breakers on which it is installed from closing simultaneously by linking components. Tmax XT cir- cuit- breakers can be interlocked two-by-two (IO-OI-OO) by means of a chassis and special plates. Interlocked circuit-breakers can be in fixed, plug-in or withdrawable versions. Both circuit-breakers and switch-disconnec- tors in the 3 and 4 pole versions can be interlocked. The allowed combinations are:

— Interlock

XT1

XT2

XT3

XT4

XT5

XT6

XT1 XT2 XT3 XT4 XT5 XT6



The following equipment must be ordered to make a rear interlock: • a vertical or horizontal chassis; • a plate for each circuit-breaker to be interlocked.

For using an XT4 on an XT5 chassis and an XT5 on an XT6 chassis, dedicated plates are necessary. Please note that remote closing commands sent to interlocked circuit-breakers in the open position must be prevented in order to ensure the correct functioning of the mechanical interlock. If this is not possible, key locks in the open position for the MOE are necessary. With the XT5 and XT6 interlock chassis, for withdrawable version circuit-breakers, the use of the key-lock/ padlock for fixed parts (KLF) is not allowed.

— Interlock - Chassis

— Two plates

— Interlock