Accessories
Neutral Current Sensors
When the ground-fau lt option is selected in a trip unit, and
a single phase 3-wire or a 3 phase four-wire power system
(e.g., 120/208 Vac or 277/480 Vac) is used, an external neu
tral sensor must be inserted in the neutral lead of the power
system to complete the ground-fault protective circuit.
Neutral current sensor
Table
31.1
Neutral Current Sensors
CD
Breaker Frame
Circuit Breaker
Neutral Sensor Catalog
(Amps)
Sensor Rating
Rating or Tap
Number
(Amps)
Setting (Amps)
800
200
200
TSVG302
400
400/200
TSVG304A
600/3000
TSVG306A
800
800/400
TSVG308A
1600
800/4000
TSVG808A
1000
1000/500
TSVG810A
1200/6000
TSVG812A
1600
1600/1000
TSVG816A
2000
2000
2000/1200
TSVG820A
3000
800/4000
TSVG808A
1000
1000/500
TSVG810A
1200/6000
TSVG812A
1600/10000
TSVG816A
2000
2000/1200
TSVG820A
2500
2500/1800
TSVG825A
3000
3000/2400
TSVG830A
4000
4000
4000/3000
TSVG940A
CD
Match neutral current sensor rating lor tap setting) to circuit breaker sensor rating.
0
For use with mu ltiple-source ground fa ult protection schemes. rating does not
match MicroVersaTrip® Trip
Unit
sensor.
Additional Accessories - Stationary
Breakers General Purpose,
Wall Enclosures
General Purpose, N E MA 1 enclosures are available for Power
Break® II breakers with neutrals for 800-2000 amps. These
units are U L Listed for service entrance use for single phase
three-wire, or 3-phase four-wire power systems through 600
Vac. Enclosures are provided with breaker mounting studs
and lugs. Enclosures, breakers and neutrals a re o rdered and
shipped separately, unassembled. These units are suitable
for use in 65 kA (max.) rms symmetrical systems.
Table
3 1.2
Enclosures And Field Installed Neutrals
Catalog Number
Frame Size
Field I nstalled Neutral
Catalog Number
SPB08W
800 A
TNT800
SPB16W
1600 A
TNT1600
SPB20W
2000A
TNT2000
31
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