Page 14 - SACE Tmax XT - Technical Catalogue

1/10 SACE TMAX XT LOW VOLTAGE MOLDED CASE CIRCUIT-BREAKERS

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Insulation distances

Clearances for installation in metallic cubicles

This section provides the compliance clearances for the installation of the circuit-breaker inside a metal
cubicle.
The cubicle is the reference for the metallic parts of the switchgear assembly adjacent to the circuit-
breaker and is used as a reference to define the clearances to be observed to permit the free evacuation
of ionized gases and metal vapors and to prevent the ignition of adjacent parts. The clearances refer to
the tests carried out in compliance with the IEC 60947-2 Standard.
The installation modality in relation to the type of circuit-breaker and the compulsory protections that
must be used depending on the connection terminals is summarized in the tables below.
For further details about installation, please see the related instructions provided with the circuit-breaker.

LTC HTC HTC-ES PB 25mm PB 100mm PB 200mm
XT1 F - R - S R R
EF - R - - S R
ES - - - - - S
FC Cu - R - S R R
FC CuAl 1x1.5…70 - R - S R R
FC CuAl 1x35…95 - S - - - -
FB - R - S R R
MC - S - - - -
R S - - - - -
XT2 F - R - S R R
EF - S - - S R
ES - - - - - S
FC Cu - R - S R R
FC CuAl 1x1…95 - R - S R R
FC CuAl 1x70…185 - S - - - -
FC CuAl 2x35...70 - S - - - -
FB - R - S R R
MC - S - - - -
R S - - - - -
XT3 F - R - S R R
EF - R - - S R
ES - - - - - S
FC Cu - R - S R R
FC CuAl 1x35...150 - R - S R R
FC CuAl 1x95...185 - R - S R R
FC CuAl 2x35…120 - S - - - -
FB - R - S R R
MC - S - - - -
R S - - - - -