I.B. 2C12060H08
For more information visit: www.EatonElectrical.com
Instruction Book
Effective: May 2006
Page 49
breaker trips as a result of the trip unit reacting to an
overcurrent condition. Opening as a result of a circuit
breaker’s manual open button, shunt trip or undervoltage
release does not cause the overcurrent trip switch to oper-
ate. The overcurrent trip switch has (2a 2b) Form C con-
tacts (Table 3.6).
The status of the contacts changes when the trip indica-
tor pops out. This permits the switch to be used as an
alarm or in conjunction with a spring release to block a
subsequent remote electrical closing signal.
Motor Operator - A Motor operator is an electric motor
assembly internally mounted in the circuit breaker
(Figures 3-55 and 3-56). It charges the closing springs
electrically for remote or local operation. The motor
operator can be factory or site installed (Table 3.7).
To convert a manually operated circuit breaker to an
electrically operated circuit breaker, a UL listed motor
operator kit is available.
Figure 3-56 Motor Operator Installed in Narrow Frame
Circuit Breaker
Table 3.7 Motor Operator
Control ① Operational Running Typical Power Maximum
Voltage Range Current Inrush Consumption Charging Time
Voltages 85-110 % (A. avg.) Current (watts or VA) (seconds)
24 Vdc
48 Vdc
110-125 Vdc
220-250 Vdc
110-127 Vac
208-240 Vac
20-26
41-53
94-138
187-225
94-140
177-264
12.0
5.0
2.0
1.0
2.0
1.0
300% of Running
500% of Running
600% of Running
600% of Running
600% of Running
600% of Running
300
250
250
250
250
250
5
5
5
5
5
5
Figure 3-55 Motor Operator Kit
① AC voltages are 50/60Hz
To Next Page
Loading...