ABB | SACE Emax 2
258 | © 2017 ABB | 1SDH001330R0002 - ECN000058721 Rev. A
Electrical accessories | 2 - Electrical signalling accessories
S51: trip unit tripping signalling
contact
The S51 contact signals the opening of the circuit-breaker due to tripping of the Ekip protection trip unit.
It is available in two different types:
• standard contact
• contact for digital signals
NOTE:
The standard S51 contact is always included in automatic circuit-breakers, and is
associated with the TU Reset mechanical signalling.
98
96
95
S51
S51 for E1.2
98
96
95
S5 1
S51 for E2.2 - E4.2 - E6.2
The following table provides information on the electrical characteristics:
Characteristics
Standard
Digital signals
Breaking
capacity
DC
24V
-
0.1 A
125V
0.3A @ 0ms
-
0.15A @ 10ms
-
250V
0.3A @ 0ms
-
0.15A @ 10ms
-
AC
125V - 250V
1.5A cos
φ
0.3
-
3A cos
φ
0.7
-
5A cos
φ
1
-
Minimum load
100mA @ 24V
1mA @ 5V
S51: Connections
Further information is available on page 174, or on the website http://www.abb.com/abblibrary/
DownloadCenter/, where the wiring diagram is available
Information on the assembly is available on the website http://www.abb.com/abblibrary/DownloadCenter/,
in particular for E1.2 in the kit sheet
and for E2.2-E4.2-E6.2 in the kit sheet
Summary of Contents for SACE Emax E1.2
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