SACE TMAX XT UL/CSA LOW VOLTAGE MOLDED CASE C I RCUI T- BRE AKERS UL4 89 AND CSA C2 2 . 2 STANDARDS
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— Remote control
Undervoltage release – YU The undervoltage release opens the circuit-breaker when there is a significant voltage drop or power fail- ure. It can be used for safe remote tripping, for blocking closing or to control the voltage in the primary and secondary circuits. The power supply for the release is therefore obtained from the supply side of the circuit-breaker or from an independent source. Circuit-breaker closing is permitted only when the release is powered. The undervoltage release is an alter- native to the second shunt opening release. 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.
— Undervoltage release
General characteristics Power supply (Un)
AC
DC
24V 30V 48V 60V
110V…120V 120V…127V 220V…240V 240V…250V 380V…400V 415V…440V 480V…500V
- - -
Operating limits Inrush power (Ps)
70%...100% Un
300VA
300W
Continuous power (Pc)
3.5VA
3.5W
Opening time (YU) XT7-XT7 M
30 ms
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