Page 112 - Sace Emax 2 Catalogue

6/10 SACE EMAX 2 LOW VOLTAGE AIR CIRCUIT-BREAKERS

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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,
allowing 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 pow-
ered. The time-delay device must be used with an undervoltage release with the same voltage.
General characteristics
Power supply (UVD) AC DC
24-30V -
— 48V
Fig. 08
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
overcurrent 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
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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 in-
stalled from the front, automatically reloads the springs of the operating device when they are un-
loaded 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
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Fig. 09A 380V…415V -
440V…480V (E2.2 ... E6.2) -
Operating limits (IEC60947-2 standards) 85%...110% Un
Inrush power (Ps) 300VA E1.2 300W E1.2
500VA E2.2 ... E6.2 500W E2.2 ... E6.2
Inrush time 200ms
Continuous power (Pc) 100VA E1.2 100W E1.2
150VA E2.2 ... E6.2 150W E2.2 ... E6.2
Charging time
E1.2 8 sec
E2.2 … E6.2 7 sec
— Note: charging time is refering to standard condition (Vn; Tamb)
Fig. 09B
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Electrical diagram reference: figure 13