Page 148 - SACE Tmax XT - Catalogue

7/2 SACE TMAX XT LOW VOLTAGE MOLDED CASE CIRCUIT-BREAKERS

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Execution and installation

Fixed, plug-in and withdrawable version
SACE Tmax XT circuit-breakers are available in the following versions:

• FIXED
Fixed circuit-breakers consist of a current-interrupting part connected to the trip unit, to be installed
on the back plate of the cubicle or on a DIN-rail;

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Fixed circuit-breaker
• PLUG-IN
Plug-in circuit-breakers consist of a fixed part that must be installed on the back plate of the cubicle,
and of a moving part, obtained from the fixed circuit-breaker plus the relative kit that converts it
from the fixed version into the moving part of the plug-in version;

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Plug-in circuit-breaker
• WITHDRAWABLE
Withdrawable circuit-breakers consist of a fixed part that must be installed on the back plate of the
cubicle equipped with side runners to allow the moving part to be easily racked -in and -out. Such a
solution is obtained from the fixed circuit-breaker plus the relative kit that converts it from the fixed
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Withdrawable version to a withdrawable moving part. To obtain the withdrawable version, a front accessory to be
circuit-breaker applied to the front of the circuit-breaker must be ordered so as to maintain the IP40 degree of pro-
tection over the entire disconnection run of the circuit-breaker (except for the XT7). This mandatory
accessory is a standard supply for circuit-breakers fitted with accessories in the factory.

If the plug-in circuit-breaker is fitted with electrical accessories, the appropriate connectors for dis-
connection of the relative auxiliary circuits must also be ordered. For the withdrawable version there
are dedicated accessories, fitted with connectors, which allow automatic disconnection in the case of
racking-out.
Starting from the fixed version, the SACE Tmax XT circuit-breakers can be easily converted into plug-in
and withdrawable versions by using the relative conversion kits.
The moving parts can always be obtained for the required version, fully pre-engineered from the factory,
by ordering the fixed circuit-breaker and the conversion kit at the same time.

Version
Fixed Plug-in Withdrawable
XT1   -
XT2   
XT3   -
XT4   
XT5   
XT6  -  (1)
XT7  - 
XT7 M  - 
(1) In max = 800A, not suitable for XT6 1000A