Power+™ Trip Units
Rating Plugs
Power+™ trip unit rating plug
A new interchangeable rating plug is used in the Power+™
trip unit across the entire Power Break® I I breaker product
line. Rating plugs are the key devices that establish the cur
rent rating of the breaker. They provide an essential scaling
function for the unit's microprocessor, and ensure maximum
accuracy. They also provide an external jack for connection
to an external battery pack, or TVRMSZ test kit .
Rating plugs have rejection features that allow them t o b e
inserted only with breakers containing the correct current
sensors. Rating plugs for the Power+ tri p unit cannot be used
with Spectra RMSTM molded case circuit breakers or with
MicroVersaTrip Plus™ and MicroVersaTrip PM™ trip units. See
Table 13.1 below.
Table
13.1
Rating Plug And Current Sensor Rating
Envelope
Frame
Sensor
Sensor Rating
Size
Max
Rating
Plug Amps (X)
Rating
(Amps) (S)
(Amps)
2000
800
200
100, 150, 200
400
200,225,250,300,400
800.1600
800
400. 450. 500. 600, 700, 800
1600
1000
600. 800. 1000
1600
800, 1000, 1 100, 1200, 1600
2000
2000
1000, 1200. 1500, 1600, 2000
3000
2500
1000
600. 800. 1000
2000
1000, 1200. 1500, 1600, 2000
2500
1600, 2000, 2500
3000
3000
2000, 2500, 3000
4000
4000
4000
1600, 2000, 2500, 3000, 3600, 4000
S= Sensor amp rating X= Rating plug amp
Current Sensors
Typical toroidally wound sensor
Toroidally wound current sensors are furnished for all major
protective functions, and for use with Power+™ and Micro
VersaTrip PM tri p units. Current sensors are factory installed
and are not changeable in the field. There are 11 current
ratings for the Power Break I I breaker line through 4000
amps. See Table 13.1 for current ratings. Rating plugs must
be coordinated with the current sensor rating (S) listed on the
face of the rating plug.
13
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