Eaton IZM32 - Figure 46. Spring Release with Optional Latch Switch; Figure 47. Undervoltage Release; Table 7. Spring Release Ratings; Table 8. Undervoltage Release

35
10/09 AWB1230-1605
Effective October 2009
Operation and maintenance of
IZM low voltage air circuit breakers
MOELLER www.moeller.net/de/support
Table 7. Spring Release Ratings
Control
Voltages
Operational Voltage
Range 80–110%
Inrush Power
Consumption
a
Closing
Time (ms)
24 Vdc 19–26 Vdc 250W 40
48 Vdc 38–53 Vdc 250W 40
110–125 Vdc 88–138 Vdc 450W 40
220–250 Vdc 176–275 Vdc 450W 40
110–127 Vdc 88–140 Vdc 450W 40
208–240 Vdc 166–264 Vdc 450W 40
a
Required for less than 200 ms.
Figure 46. Spring Release with Optional Latch Switch
Undervoltage release—The undervoltage release is an optional
device on both manually and electrically operated circuit breakers
(Figure 47). It opens the circuit breaker when its supply voltage falls
to between 35–60% of rated voltage. If the release is not energized
to 85% of its supply voltage, the circuit breaker cannot be closed
electrically or manually (Table 8).
Auxiliary switch—An auxiliary switch is an optional device providing
remote electrical indication if the circuit breaker is open or closed
(Figure 49). Up to three auxiliary switches can be mounted in the
circuit breaker. Each switch has two normally open (“a”) and two
normally closed (“b”) contacts for a total of 12 available contacts
(Table 1).
Table 8. Undervoltage Release
Control
Voltages
Operational
Voltage Range
85–110%
Dropout
Volts
30–60%
Inrush/Continuous
Power Consumption
ab
Opening
Time
(ms)
24 Vdc
a
20–26 Vdc 7–14 Vdc 250W/18W 70
32 Vdc
a
27–35 Vdc 10–19 Vdc 275W/15W 70
48 Vdc
a
41–53 Vdc 14–29 Vdc 275W/18W 70
110–125 Vdc
a
94–138 Vdc 33–75 Vdc 450W/10W 70
220–250 Vdc
a
187–275 Vdc 66–150 Vdc 450W/10W 70
110–127 Vac
b
94–140 Vac 33–76 Vac 450 VA/10 VA 70
208–240 Vac
b
177–264 Vac 62–144 Vac 400 VA/10 VA 70
380–415 Vac
b
323–457 Vac 114–249 Vac 480 VA/10 VA 70
480 Vac
b
408–528 Vac 144–288 Vac 400 VA/10 VA 70
600 Vac
b
510–660 Vac 180–360 Vac 400 VA/10 VA 70
a
Required for 200 ms.
b
Required for 400 ms.
Table 9. Auxiliary Switch, Overcurrent Trip Switch, and Cell
Switch Contact Ratings
Control Voltages Contact Rating Inductive Load (Amperes)
250 Vac 10
125 Vdc 0.5
250 Vdc 0.25
Figure 47. Undervoltage Release