Page 206 - SACE Tmax XT - Catalogue

7/60 SACE TMAX XT LOW VOLTAGE MOLDED CASE CIRCUIT-BREAKERS

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Residual current protection

SACE RCQ020 panel type residual current release
SACE Tmax XT circuit-breakers can also be used in conjunction with RCQ020 panel type residual current
releases with a separate toroid to be installed on the line conductors (“/A” indicates the necessity for an
auxiliary power supply).
Thanks to its wide range of settings, the panel release is suitable for:
• applications where the installation conditions are particularly restrictive, such as for circuit-breakers
that are already installed or where there is limited space in a compartment where the circuit-breaker
is installed;
• creating a residual current protection system coordinated at various distribution levels, from the
main switchboard to the end user;
• where residual current protection with low sensitivity is required, e.g. in partial (current) or total
(time) selective chains;
• highly sensitive applications (physiological sensitivity) for protecting people against direct contacts.
Thanks to the 115-230...415V external auxiliary power supply, the RCQ020 panel type residual current
device is able to detect current leakages from 30mA to 30A and to act with a trip time that can be ad-
justed from instantaneous to a delay of 5s. The opening mechanism is an indirect action type and acts
on the circuit-breaker release mechanism by means of the shunt opening or an undervoltage release of
the circuit-breaker itself.
The opening command to the circuit-breaker (trip delay) can be temporarily inhibited, and the circuit-
breaker can be opened by remote control by means of the RCQ020 device.
The following equipment must be requested when ordering:
• the RCQ020 device itself;
• an opening coil (SOR) or an undervoltage release (UVR) of the circuit-breaker to be housed in the rela-
tive slot made in the left pole of the circuit-breaker itself;
• a closed toroid, which can be used for both cables and busbars, with a diameter from 60mm to 185mm.

Signals available:
• LED to indicate the status of the residual current device (supplied or not supplied). The RCQ020 is
equipped with a positive safety function thanks to which the RCQ020 sends an automatic circuit-
breaker opening command in the absence of auxiliary voltage;
• LED for fault signaling;
• LED for signaling tripping of the residual current device;
• electrical pre-alarm/alarm/trip signals.