Rockwell Automation 140U Q and M-Frame Circuit Breakers Installation of Q-Frame Circuit Breakers - Manual (Page 7)

Page 7
Circuit
Breaker
Q-Frame
TABLE I: AVAILABLE TRIP UNIT RATINGS
Trip Unit Types
Fixed
Thermal
300
350
400
450
500
600
Thermal-Magnetic@
Amperes
Adjustable
Thermal
Adjustable
Magnetic
(Instantaneous)
Multiples
of
Trip
Unit
Rating
600
Electronic (RMS )(1)
Amperes
Rating Rating
300
350
400
500
600
(1) Two trip unit types are available:
LS(G) have fixed, sloping short-time current configuration.
LSI(G)have separate adjustable short-time pick-up and short delay settings.
(2) For adjustable thermal trip units, the magnetic setting is a multiple of the maximum thermal setting.
For ELECTRONIC RMS trip units, the instantaneous/short-time setting is a multiple of the rating plug.
Adjustable
Short
Time
Multiples
of
2 to 8
40752-078(1) Effective 5/02
NA
(2) (2)