SACE EMAX 2 NEW LOW VOLTAGE POWER C I RCUI T BRE AKERS TO ANS I C37 / UL 1066 / CSA STANDARDS
6/10
— Accessories for circuit breakers
Time-delay device for undervoltage release (UVD) (Fig. 08) The undervoltage release can be combined with an electronic time-delay device for the circuitbreaker, al- lowing for delayed external tripping with adjustable preset times. Use of the delayed undervoltage trip unit is recommended to prevent tripping when the power supply network for the trip unit is subject to brief voltage drops or power supply failures. Circuit-breaker closing is inhibited when it is not powered. The time-delay device must be used with an undervoltage release with the same voltage. General characteristics Power supply (UVD) AC DC 24-30V -
— Fig. 08
48V 60V
110-127V 220-250V Adjustable opening time (YU + D):
0.5-1-1.5-2-3 s
Resetting remotely- YR The reset coil YR permits remote resetting of the circuit-breaker after a release has tripped due to an over- current condition. It is available for all automatic circuit-breakers, in different voltage supply: General characteristics Power supply (Un) AC DC 24V
110V 220V
Operating limits
90%...110% Un
— Electrical diagram reference: figure 4
Motor – M (Fig. 09A/B) The motor automatically loads the closing springs of the circuit-breaker. The device, which can be installed from the front, automatically reloads the springs of the operating device when they are unloaded and power is present. In the event no power is present, the springs can be manually loaded by a dedicated lever on the operating device. The motor is always supplied with the limit switch contact S33 M/2 which signals the status of the springs. General characteristics Power supply (Un) AC DC
24V-30V 48V-60V
100V…130V 220V…250V 380V…415V
— Fig. 09A
- -
440V…480V (E2.2 ... E6.2)
Operating limits (IEC60947-2 standards)
85%...110% Un
Inrush power (Ps)
300VA E1.2 500VA E2.2 ... E6.2
300W E1.2 500W E2.2 ... E6.2
Inrush time
200ms
Continuous power (Pc)
100VA E1.2 150VA E2.2 ... E6.2
100W E1.2 150W E2.2 ... E6.2
Charging time
E1.2
8 sec 7 sec
E2.2 … E6.2
— Fig. 09B
— Electrical diagram reference: figure 13
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