Table of Contents
Advertisement
Accessories
Auxiliary Switch –
Field installable kit available
(Breaker accessory)
The auxiliary switch is used for indication of breaker main
contact position. It is available on manually and electrically
operated breakers in either a 4-stage or 7-stage configura-
tion. The 4-stage switch yields 3NO and 3NC contacts while
the 7-stage switch yields 6NO and 6NC contacts. Normally
open (NO) contacts follow the breaker primary contact posi-
tion while normally closed (NC) contacts operate opposite
the breaker primary contacts. All auxiliary switch contacts
feature rugged double-break construction. Refer to breaker
wiring diagram 10057403P1 for contact configurations and
secondary disconnect terminations. Ratings of the auxiliary
switch contacts are shown in Table 13.1.
Table 13.1 Auxiliary switch ratings and contact operation
Auxiliary Switch Ratings x
Control Voltage
24
DC
125
250
120
AC - 60Hz
240
x 20A continuous rating of switch limited to 15A continuous rating of #16AWG
wire on drawout breakers
Table 13.2
Auxiliary switch contact operation
Breaker primary contacts
"a"-contact (NO)
Open or tripped
Open
Closed
Closed
Table 13.3
Field installable auxiliary switch kit catalog numbers
Auxiliary switch
WP-08 / 16 / 20
Four stage
WPAUXSF4STG
Seven stage
WPAUXSF7STG
Bell Alarm with/without Lockout –
Field installable kit available
(Breaker accessory)
The bell alarm device is provided with two C-form contacts —
each C-form contact is 1NO and 1NC contact with a common
connection. The bell alarm device operates whenever the
breaker trips due to a protective function of the trip unit. It
can be used to provide remote indication of a fault trip
and/or disable electrical operation of breakers that may
have automatic control.
™
For Power+
and MicroVersaTrip Plus
alarm will operate for overload, short circuit and ground
fault trips. For MicroVersaTrip PM
will operate for the same overcurrent trips plus any of the
protective relay trips that are enabled in the trip unit.
Tripping via the manual trip button, shunt trip, undervoltage
device or open fuse lockout will not operate the bell alarm.
The bell alarm can be furnished with a mechanical lockout
Rating (Amperes)
Non-inductive
Inductive
15
10
10
5
5
5
15
15
10
10
"b"-contact (NC)
Closed
Open
WP-32 / 40
WP-50
WPAUXLF4STG
WPAUXXF4STG
WPAUXLF7STG
WPAUXXF7STG
™
trip units, the bell
™
trip units, the bell alarm
feature that will prevent the breaker from being manually
closed until the lockout is reset. Reset of the contacts and
lockout feature is accomplished by pushing the yellow "reset"
button on the breakerescutcheon. The reset button also serves
as a target indicator that the bell alarm has been operated.
Ratings of the bell alarm contacts are shown in Table 13.4
Table 13.4 Bell alarm contact ratings
Bell Alarm Contact Ratings
AC Ratings
DC Ratings
0.5A @ 125Vdc
6A @ 240Vac
0.25A @ 250Vdc
Table 13.5
Field Installable Bell Alarm Kit Catalog Numbers
(kit provides choice of with or without lockout)
WP-08 / 16 / 20
WP-32 / 40 / 50
WPBASF
WPBALF
Electrical Lockout – Field installable kit available
(Breaker accessory)
The electrical lockout device provides a means to electrically
enable or disable manual closing of a circuit breaker. This
device must be energized prior to attempting to manually
close the breaker. Once the breaker is closed, loss of voltage
will not trip the breaker. A manual bypass interlock is provided
for initial startup. Refer to the undervoltage device for ratings
and coil characteristics. (Note: Interlocking of electrically oper-
ated breakers does not require an electrical lockout device.)
Table 13.6
Field installable electrical lockout kit catalog numbers
Control voltage
WP-08 / 16 / 20
120Vac 50/60Hz
WPELSF56120
240 Vac 50/60Hz
WPELSF56240
24Vdc
WPELSFDC024
48Vdc
WPELSFDC048
110Vdc
WPELSFDC110
125Vdc
WPELSFDC125
250Vdc
WPELSFDC250
Fuse and Fan – WP-50 (Breaker accessory)
The WP-50 breaker is provided with integrally mounted cooling
fans. Fan control is initiated by the trip unit which signals a fan
controller to turn the fans on and off when the load current
exceeds or drops below 4200 amperes. The fan motors require
120Vac and the fan controller requires 24Vdc auxiliary power.
Both the fans and the fan controller are wired to the breaker
secondary disconnect. The 24Vdc source can be the POWER
™
LEADER
power supply used for MicroVersaTrip PM
units. 120Vac is normally provided by the switchgear control
power transformer. Power requirement for each fan is
0.2amps @ 120Vac (two fans installed).
Fuse Roll-out – Fuse carriage (Equipment accessory)
A fuse roll-out is used in conjunction with breakers that do
not have integral fusing and are applied in high available
short circuit current systems. The fuse roll-out is equipped
with wiring and a secondary disconnect for blown fuse
sensing. The sensing wiring is connected to the breaker-
mounted Open Fuse Lockout (OFLO). The OFLO will trip the
circuit breaker whenever a fuse in the roll-out opens due to
short circuit interruption. Note that the WavePro breaker
WP-32 / 40 / 50
WPELLF56120
WPELLF56240
WPELLFDC024
WPELLFDC048
WPELLFDC110
WPELLFDC125
WPELLFDC250
™
trip
13
Hide quick links:
Advertisement
Table of Contents
