Mechanical Interlocks; Mechanical Interlock Of Type A - Two Circuit-Breakers - ABB SACE Emax 2 Installation, Operation And Maintenance Instructions

3 - Mechanical Interlocks

Mechanical interlock of type A -
Two Circuit-breakers
1 2
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I
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88 | © 2014 ABB | 1SDH000999R0002 - L8569
Mechanical interlocks determine the opening/closing logic between two circuit-breakers.
The type A interlock is available, usable in both the fixed version and the withdrawable version.
The Type A interlock is applicable to two circuit-breakers (normal power supply + emergency power supply).
It allows you never to have two circuit-breakers in the closed position at the same time.
Information on assembly is available at the web site http://www.abb.com/abblibrary/DownloadCenter/, in
particular with the sheets kit:
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• 1SDH000999R0720
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• 1SDH000999R0721
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for interlock between E1.2circuit-breakers
for interlock between an E1.2 circuit-breaker and E2.2, E4.2 or E6.2 circuit-breaker
ABB | SACE Emax 2
Mechanical accessories | 3 - Mechanical Interlocks