ABB | SACE Emax 2
Electrical accessories
2 - Electrical signalling accessories
200 | © 2023 ABB | 1SDH001330R1002 - ECN000297030
RTC: ready to close signalling
contact
The RTC contact indicates that the circuit-breaker is ready to receive a closing command.
The conditions necessary to allow the closing of the circuit-breaker are:
• circuit-breaker open
• springs charged
• absence of an opening command or of a lock in opening
NOTE:
if the circuit-breaker is opened due to the tripping of the Ekip protection trip unit,
in order to allow closing, the Reset signal of the circuit-breaker must have been reset (press
the TU Reset pushbutton on the front panel).
The RTC is a "switching" contact type and is available in the standard version or in the versions for digital
signals.
RT C
48
46
45
RTC for E1.2
RT C
48
46
45
RTC 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
1A cosφ 0,3 -
2A cosφ 0,7 -
3A cosφ 1 -
Minimum load 100mA @ 24V 1mA @ 5V
RTC: Connections
More details are available in the website http://www.abb.com/abblibrary/DownloadCenter/, which also
includes the entire circuit diagram 1SDM000091r0001.
Information on the assembly is available on the website http://www.abb.com/abblibrary/
DownloadCenter/, in particular for E1.2 in the kit sheet 1SDH000999r0604 and for E2.2-E4.2-E6.2 in the
kit sheet 1SDH001000r0604.
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