ABB SD812F After sales service is provided for the control card of the power supply device

Description

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Mechanical signalling of the tripping of protection trip unit – TU Reset
The automatic circuit-breakers are always equipped with a mechanical device that signals
the tripping status of the protection trip units. After the Ekip trip unit has tripped due to an
electrical fault, the signalling device clearly indicates the tripping status on the front of the
circuit-breaker. The circuit-breaker can be reset only after the signalling pushbutton has been
restored to its normal operating position. The device conforms to the Ansi 86T standard.
Contact signalling tripping of protection trip unit Ekip – S51
The contact signals the opening of the circuit-breaker after the Ekip protection trip unit
has tripped. The circuit-breaker can only be closed after the “TU Reset” tripped trip unit
mechanical signalling pushbutton has been restored to its normal operating position.
The switching contact, which is always supplied with the standard version of the automatic
circuit-breakers, is also available on request in a version for digital signals (for electrical
characteristics, please refer to the RTC contact). It can also be associated to an optional
accessory for resetting by remote control – YR. For electromechanical characteristics, please
refer to the RTC contact.
Electrical diagram reference: figure 11
Contact signalling loaded springs – S33 M/2
This contact is always supplied with a geared motor; it remotely signals the spring status of
the circuit-breaker operating mechanism. It is available in both standard version and version
for digital signals.
Standard cont