ABB SACE Emax 2 - Mechanical Interlocks; Mechanical Interlock of Type a - Two Circuit-Breakers

ABB | SACE Emax 2
Mechanical accessories | 3 - Mechanical Interlocks
89 | © 2017 ABB | 1SDH000999R0002 - ECN000058721 - Rev. B
3 - Mechanical Interlocks
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.
Mechanical interlock of type A -
Two Circuit-breakers
1 2
O
I
O
O
O
I
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 on the web site http://www.abb.com/abblibrary/DownloadCenter/, in
particular with the kit sheets:
• 1SDH000999R0720 for interlock between E1.2circuit-breakers
• 1SDH000999R0721 for interlock between an E1.2 circuit-breaker and E2.2, E4.2 or E6.2 circuit-breaker