g
GEH–6275D
Power Break® II Circuit Breaker
Accessories
Bell Alarm–Alarm Only
Introduction
The Bell Alarm–Alarm Only module, shown in Figure 1, can be
installed in 800–4000 ampere frame Power Break® II circuit
breakers. This module pro vides a switch to remotely indicate
that the circuit breaker has tripped. It is reset either
automatically when the circuit breaker is reclosed or manually
when the reset button on the front of the Bell Alarm–Alarm
Only module is pressed.
Operation
The Bell Alarm–Alarm Only provides normally open (N O) and
normally closed (NC) outputs available at the terminal block
on the right side of the breaker, as illustrated in Figure 2. The
outputs change state whenever a breaker trip occurs. This trip
can be caused by an overcurrent condition detected by the Trip
Unit. This trip can also be generated by the Shunt Trip, Shunt
Trip with Lockout, or Undervoltage Release, if installed with a
MicroVersaTrip Plus or MicroVersaTrip PM Trip Unit and if
the appropriate DIP switches have been set on the back of the
Trip Unit. Power+ Trip Units can only activate the Bell
Alarm–Alarm Only for a protection trip.
The Bell Alarm–Alarm Only accessory resets automatically,
returning the outputs to their normal configuration, when the
breaker is reclosed. The Bell Alarm–Alarm Only can also be
reset manually, before the breaker is reclosed, by pressing the
reset button on the front of the module.
Figure 1. Bell Alarm–Alarm Only.
In addition to activation by protection trips, the Bell
Alarm–Alarm Only accessory module can be set up to interact
with other Power Break II accessories, when used with a
MicroVersaTrip Plus™ or MicroVersaTrip PM™ Trip Unit.
DIP switches on the rear of the MicroVersaTrip Plus or
MicroVersaTrip PM Trip Unit can configure the Bell
Alarm–Alarm Only accessory to activate when a Shunt Trip or
Undervoltage Release trip occurs. The Accessory Configuration
section below describes how this can be done
The Power+™ Trip Unit activates the Bell Alarm–Alarm Only
for protection trips only.
The catalog numbers for the Bell Alarm–Alarm Only are listed
in Table 1.
Catalog No. Contact Rating
6 A at 240 Vac
SPBAA240
SPBAA600
➀
600 V version is not UL listed.
Table 1. Bell Alarm–Alarm Only catalog numbers.
0.25 A at 250 Vdc
0.50 A at 125 Vdc
➀
0.25 A at 250 Vdc
0.50 A at 125 Vdc
6 A at 600 Vac
Figure 2. Bell Alarm–Alarm Only connections on the right terminal
block. The contacts are shown in the reset state.
Installation
WARNING: Before installing any accessories, turn the breaker
OFF, disconnect it from all voltage sources, and discharge the
charging springs.
AVERTISSEMENT: Avant d’installer tout accessoire, mettre
le disjoncteur en position OFF, le déconnecter de toute tension
d’alimentation, et décharger les ressorts d’armement.
The Bell Alarm–Alarm Only is installed in the accessory
compartment on the front of the circuit breaker in the position
shown in Figure 3.
Figure 3. Accessory compartment on front of circuit breaker, with Bell
Alarm–Alarm Only slot indicated.
Use the following procedure to install the Bell Alarm–Alarm
Only into the accessory compartment:
1. Open the hinged door over the accessory compartment and
Trip Unit.
2. To remove an existing accessory module, loosen the
accessory locking screw and pull the module out with the
Rating Plug Removal Tool (catalog number TRTOOL).
3. Insert the Bell Alarm–Alarm Only module into the proper
slot, as illustrated in Figure 4. The Bell Alarm–Alarm
Only module i s keyed for the correct slot in the accessory
compartment. If the module cannot be fully seated in the
compartment, check that the compartment position is
correct.
4. Tighten the locking screw on the front of the accessory
until it is snug (9 in-lbs).
Figure 4. Inserting the Bell Alarm-Alarm Only into the accessory
compartment.
6. Connec t the control wiring for the Bell Alarm–Alarm Only
at the right terminal block, as illustrated in Figure 2.
7. Test the Bell Alarm–Alarm Only to ensure proper
operation, according to the procedures below.
8. Reconnect power to the circuit breaker and any other
accessories.
9. Close and lock or seal the door over the accessory
compartment and Trip Unit to prevent unauthor ized
changes to Trip Unit settings and to keep contaminants
out of empty accessory slots.
10. If the Bell Alarm–Alarm Only is rated at 600 V, remove
the UL label from the breaker top cover.
Accessory Configuration
This section applies only if Shunt Trip or Undervoltage Release
accessories are installed in the breaker, along with a
MicroVersaTrip Plus or MicroVersaTrip PM Trip Unit. The
Bell Alarm–Alarm Only accessory can be configured to activate
if a Shunt Trip or Undervoltage Release trip occurs. The
configuration can be changed by removing the Trip Unit from
the breaker, setting the DIP switches on the rear of the Trip
Unit, and rein stalling the Trip Unit. Figure 5 illustrates the
Trip Unit rear DIP switches. Table 2 lists the switch functions
and the factory settings for each.
CAUTION: Overtightening the locking screw may damage or
distort the ca se of the accessory.
ATTENTION: Le serrage excessif de la vis de verrouillage
peut déformer le boîtier d’accessoire.
5. If the breaker is equipped with a MicroVersaTrip Plus or
MicroVersaTrip PM Trip Unit, the Bell Alarm–Alarm
Only accessory can be confi gured to activate after trips
due to installed Undervoltage Release or Shunt Trip
accessories with the procedure described in the Accessory
Configuration section.
Figure 5. Accessory switch on the rear of a MicroVersaTrip Plus™ or
MicroVersaTrip PM™ Trip Unit, showing the factory settings (solid
part indicates that switch is pushed in on that side).