Page 195 - SACE Tmax XT - Catalogue

ACCESSORIES 7/49

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Interlocks and switching devices

Operating mechanism XT1 XT2 XT3 XT4 XT5 XT6 XT7 XT7 M
Rear mechanical MIR Horizontal       - -
interlock MIR Vertical       - -
Type A (2 CBs) - - - - - -  
Cables interlocks
Type B, C and D (3 CBs) - - - - - -  
Automatic ATS021        
transfer switch ATS022        

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 it is installed on 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. Inter-
locked circuit-breakers can be in fixed, plug-in or withdrawable versions. Both circuit-breakers and
switch-disconnectors 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: 07
• 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.

+ =

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Interlock - Chassis Two plates Interlock