Catalog
Number
Voltage
Rating
❿
Peak Inrush
Current, A
❡
Nominal RMS
Current, mA
SPUV012DC
12 Vdc
19
300
SPUV024DC
24 Vdc
15
140
SPUV048DC
48 Vdc
7.5
70
SPUV125DC
125 Vdc
3
30
SPUV250DC
250 Vdc
1.5
15
SPUV024AC
24 Vac
15
370
SPUV048AC
48 Vac
7.5
210
SPUV120AC
120 Vac
3
80
SPUV208AC
208 Vac
1.9
60
SPUV240AC
240 Vac
1.5
45
❿
24–240 Vac devices are rated for
Peak 50/60 Hz.inrush current is present for 2–6 ms after activation.
This number is provided so that fuses and supplies can be chosen
appropriately.
—
Table 1. Catalog numbers and voltages for the Undervoltage Release.
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 toute accessoire,
mettre le disjoncteur en position OFF, le déconnecter
de toute tension
d’alimentation,
et
décharger
les ressorts d’armement.
GEH6285 I NSTRUCTIONS
Power Break® II Circuit Breaker Accessories
Undervoltage Release
1
The Under voltage Release is installed in the accessory
compartment through the front of the circuit breaker in the
position shown in Figure 2.
Introduction
The Undervoltage Release (UVR) accessory, shown in Figure
1, can be installed in 800–4000 ampere frame Power Break II
circuit breakers. This accessory trips the circuit breaker
when the input control voltage drops to 35–60% of its rated
value and prevents an open breaker from closing until the
input control voltage is greater than 80% of the rated value.
In addition to providing a trip signal to the breaker, the UVR
accessory 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 breaker Trip Unit can configure the UVR accessory to
activate a Bell Alarm–Alarm Only accessory or a Bell Alarm
with Lockout accessory when a UVR trip occurs. The
Accessory Configuration section below describes how this
can be done. If the breaker is equipped with a Power+ Trip
Unit, it is configured so that only protection trips will
activate a Bell Alarm–Alarm Only or Bell Alarm with Lockout.
The
catalog
numbers
for
the
UVR
for
various voltage applica
-
tions are listed in Table 1.
—
Figure 2. Accessory compartment on front of circuit breaker, with Undervoltage Release slot indicated.
—
Figure 1. Undervoltage Release.
Operation
Apply control voltage to terminals 29 and 30 of the terminal
strip on the right side of the breaker. When the applied
control voltage is above 80% of the UVR’s rated value, the
breaker can be closed. When the voltage drops to 35–60% of
the rated value, the UVR will trip the breaker.
