Figure 68. Motor Operator Kit; Figure 69 . Motor Operator Installed In Narrow Frame; Figure 70. Cover Mounted Key Lock And Operations Counter - Eaton SBN-508 Instructions For Installation, Operation And Maintenance

Instructions for Installation, Operation and
Maintenance of Magnum SB Insulated Case
Low Voltage Power Circuit Breakers
The status of the contacts changes when the trip indicator
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 68 and 69) . It charges
the closing springs electrically for remote or local operation .
The motor operator can be factory or site installed (Table 11) .
To convert a manually operated circuit breaker to an electrically
operated circuit breaker, a UL listed motor operator kit is
available .
Table 11. Motor Operator
Operational
Voltage Running
Control Range Current
j
Voltages 85-110% (A. avg.)
24 Vdc 20-26 12.0
48 Vdc 41-53 5.0
110-125 Vdc 94-138 2.0
220-250 Vdc 187-225 1.0
110-127 Vac 94-140 2.0
208-240 Vac 177-264 1.0
j AC voltages are 50/60Hz

Figure 68. Motor Operator Kit

Maximum
Typical Power Charging
Inrush Consumption Time
Current (watts or VA) (seconds)
300% of Running 300 5
500% of Running 250 5
600% of Running 250 5
600% of Running 250 5
600% of Running 250 5
600% of Running 250 5
Instructional Leaflet
Figure 69. Motor Operator Installed in Narrow Frame Circuit
Breaker
Operations
Counter

Figure 70. Cover Mounted Key Lock and Operations Counter

EATON CORPORATION www.eaton.com
IB2C12063H03
Effective March 2012
"OFF"
Key Lock
51