Use the following procedure to install the UVR accessory
into the UVR slot in the accessory compartment of the
circuit breaker:
Open
the
hinged
door
over
the
accessory compart
-
ment and Trip Unit.
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).
Insert the UVR accessory into the proper slot, as
illustrated in Figure 3. The UVR accessory is keyed for
the correct slot in the accessory compartment. If the
accessory cannot be fully seated in the compartment,
check that the compartment position is correct.
Tighten the locking screw on the front of the accessory
until it is snug (torque of 9 in-lb.)
CAUTION:
Overtightening the locking screw may damage
or distort the case of the accessory.
ATTENTION:
Le serrage excessif de la vis de verrouillage
peut déformer le boîtier d’accessoire.
If the breaker is equipped with a MicroVersaTrip Plus
or MicroVersaTrip PM Trip Unit, the UVR accessory can
be configured to activate installed Bell Alarm Alarm
Only or Bell Alarm with Lockout accessories when a
UVR trip occurs, with the procedure described in the
Accessory Configuration section.
Connect the control wiring for the UVR to terminals 29
and 30 at the terminal block on the right side of the
breaker.
Test the UVR to ensure proper operation, according to
the procedures below.
Reconnect power to the circuit breaker and any other
accessories.
Accessory Configuration
This section only applies if Bell Alarm–Alarm Only or Bell Alarm
with Lockout accessories are installed in the breaker, along
with a MicroVersaTrip Plus or MicroVersaTrip PM Trip
Unit. If the breaker is equipped with a Power+ Trip Unit, the
factory default settings, listed in Table 2, can not be changed.
The UVR accessory can be configured to activate the Bell
Alarm–Alarm Only or Bell Alarm with Lockout accessories if a
UVR 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 reinstalling the Trip Unit. Figure 4
illustrates the Trip Unit read DIP switches and their functions.
Table 2 lists the switch functions and the factory settings for
each.
Switch Factory
Setting
Function
1
Disabled Shunt trip activates Bell Alarm–Alarm
Only
2
Disabled UVR trip activates Bell Alarm–Alarm
Only
3
Enabled Protection trip activates Bell
Alarm–Alarm Only
4
Disabled Shunt trip activates Bell Alarm with
Lockout
5
Disabled UVR trip activates Bell Alarm with
Lockout
6
Enabled Protection trip activates Bell Alarm
with Lockout
2
—
Figure 3. Inserting the Undervoltage Release into the accessory compartment.
—
Figure 4. Accessory switch on the rear of the MicroVersaTrip Plus™ or MicroVersaTrip PM™ Trip Unit,
showing the factory settings (solid part indicates that the switch is pushed in on that side).
—
Table 2. Accessory switch settings, including the factory defaults.
4.
5
.
6
.
7
.
8
.
3.
2.
1.
Close and lock or seal the door over the accessory
compartment and Trip Unit to prevent unauthorized
changes to Trip Unit settings and to keep contaminants
out of empty accessory slots.
9
.
