Introduction
The Shunt Trip and Shunt Trip with Lockout accessories,
shown in Figure 1, can be installed in 800–4000 ampere frame
Power Break® II circuit breakers. These accessories allow the
breaker to be tripped electrically from a remote location.
In addition to providing a trip signal to the breaker, the Shunt
Trip accessories 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 Shunt Trip
accessories to activate a Bell Alarm–Alarm Only accessory or a
Bell Alarm with Lockout accessory when a shunt 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 Shunt Trip and Shunt Trip with
Lockout for 480 and 600 Vac are listed in Table 1. Voltage and
current ratings in Table 1 are given at the input of the
transformer. The voltage and current ratings of the input to the
accessory are equal to that of the 120 Vac version of the
accessory. Table 2 lists these ratings.
Operation
Apply control voltage to the primary of the supplied step-down
transformer. The secondary of the transformer is connected to
terminals 31 and 32 of the terminal strip on the right side of
the breaker.
WARNING:
480 Vac and 600 Vac Shunt Trip accessories
must be used with the supplied step-down transformer.
AVERTISSEMENT:
Les modules de déclenchement shunt 480
Vac et 600 Vac doivent être utilisés avec le transformateur
abaisseur de tension qui est fourni.
The Shunt Trip or Shunt Trip with Lockout will cause the
circuit breaker to trip when the control voltage is greater than
55% of the rated ac value. Control power to the Shunt Trip
must be removed before the breaker can be closed. Control
power to the Shunt Trip with Lockout must be removed for a
minimum of 0.25 second before the breaker can be closed.
Figure 1. Shunt Trip with Lockout
Catalog
Number
Voltage
Rating
➀
Peak Inrush
Current, mA
➁
Nominal RMS
Current, mA
SPST480
480 Vac
375
21
SPST600
600 Vac
300
17
SPSTL480
480 Vac
750
20
SPSTL600
600 Vac
600
16
➀
Rated for 50/60 Hz. Rating is 120 Vac without step-down
transformer.
➁
Peak inrush current is present fo r 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 Shunt Trip and Shunt
Trip with Lockout.
Accessory
Voltage
Rating
Peak Inrush
Current, A
Nominal RMS
Current, mA
Shunt Trip
120 Vac
1.5
85
Shunt Trip/
Lockout
120 Vac
3
80
Table 2. Voltage and current ratings for the 120 Vac Shunt Trip and
Shunt Trip with Lockout.
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 Shunt Trip or Shunt Trip with Lockout is installed in the
accessory compartment through the front of the circuit breaker in
the position shown in Figure 2.
g
Power Break
®
II Circuit Breaker
Accessories
Shunt Trip and Shunt Trip with Lockout
480 & 600 Vac
GEH–6519B
