Bell Alarm Contact And Reset Coil; Racking Handle Key Lock; Breaker Push-Button Locks; Close Coil - Siemens ETU745 Application Manual

WL Circuit Breaker
Factory Installed Options

Bell alarm contact and reset coil

The bell alarm contacts are mechanically activated by the trip
unit solenoid. If a breaker trip condition occurs, the bell alarm
form-C contacts will change state closing or opening a user circuit
wired to the secondary terminal block. The contacts can be locally
reset to their original position by manually resetting the breaker
trip button or through the use of a reset coil that resets the
contacts remotely. See breaker wiring diagram for supply terminal
locations. Non-automatic (manual) reset trip units can not be used
with the reset coil option.
Characteristics table
Available contact configurations
Remote Voltage
Reset Coil Continuous Current
AC Operation Making Current
Breaking Current
Remote Voltage
Reset Coil Continuous Current
DC Operation Making Current
Breaking Current

Racking handle key lock

A draw-out breaker can be key locked (optional) or padlocked
(standard not shown) in three racking positions; connect,
test or disconnect. Key lock cylinders are available in Kirk or
Superior types and uniquely keyed.
1 See page 85 for field install part numbers.
16
Courtesy of NationalSwitchgear.com
1
Coil ratings
240VAC 50/60Hz
5A
8A
5A
24, 48,125 or 250VDC
5A
.4A @ 24, 48,125VDC, .2A @250VDC
.4A @ 24, 48,125VDC, .2A @250VDC
Breaker push button lock-outs
A finger or hand tool shroud option can be added to the
breaker front cover to isolate the open and close buttons
from unintentional use. Shrouds may be used in combination
or like configuration.
To isolate the open and close buttons from unintentional use,
transparent padlock covers can be installed in lieu of the shroud
option. Two padlocks may be used with a latch diameter of 3/8
inch maximum (padlocks by others).

Close coil

To remotely close the WL breaker, a close coil must be used with
a momentary electrical source. Only one close coil can be used
per breaker. Charging springs must be charged and breaker open
prior to activating the close coil. See breaker wiring diagram for
supply terminal location.
Characteristics table
120VAC Range
Close Coil 240VAC Range
AC Operation Power Consumption
Breaker closing time
24VDC
48VDC
Close Coil 125VDC
DC Operation 250VDC
Power Consumption
Breaker closing time
WL Circuit Breaker Selection and Application Guide
104 - 127VAC
208 - 254
120W for 50ms (5% duty cycle)
50ms from point of signal
14 - 28VDC
28 - 56VDC
70 - 140VDC
140 - 280VDC
120W for 50ms (5% duty cycle)
50ms from point of signal