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ACCESSOR I ES
— Remote control
Remote control
XT1 XT2 XT3 XT4 XT5 XT6 XT7 XT7 M
SOR - Shunt opening release UVR - Undervoltage release YO - Shunt opening release YU - Undervoltage release YC - Shunt closing release YR - Resetting remotely
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Service release
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Remote reset
YO/YC Test Unit YO/YC Test Unit
Time delay device for YU
UVD - Time delay device for YU
MOD MOE
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Motor operator
MOE-E
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M - Motor
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Service releases The SACE Tmax XT circuit-breakers can be fitted with service releases (shunt opening release, shunt clos- ing release for XT7M only and undervoltage release).
XT1, XT2, XT3 and XT4
Shunt opening release – SOR This allows the circuit-breaker to open by means of a non-permanent electrical control. Release operation is guaranteed for voltage between 70% and 110% of the rated power supply voltage Un, in both alternating and direct current. The SOR is equipped with a built-in limit contact to shut-off the power supply in the open position with the trip unit tripped. A remote-controlled emergency opening command can be generated by connecting an opening button to the SOR. Undervoltage release – UVR This allows the circuit-breaker to open when the release is subject either to a power failure or a voltage drop. As prescribed in the Standards, opening is guaranteed when the voltage is between 70% to 35% Un. After tripping, the circuit-breaker can be closed again if the voltage exceeds the 85% Un. When the under- voltage release is not energized, neither the circuit-breaker or the main contacts can be closed. A remote- controlled emergency opening command can be generated by connecting an opening button to the UVR. None of the service releases require screws for installation. They are extremely easy to fit. Just use slight pressure in the appropriate place. All service releases are available in two versions: • cabled (AWG 20 cable section - 0.5mm 2 up to 300V, AWG 17 - 1mm 2 up to 525V): - for fixed/plug-in circuit-breakers with 3.28 ft long cables; - for withdrawable circuit-breakers with a fixed and moving part connector; • not cabled: - for fixed/plug-in circuit-breakers with cables from AWG 15 in cross-section.
— Cabled SOR - UVR
— Cabled SOR - UVR for withdrawable circuit- breaker
— Uncabled SOR - UVR
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