3-2 3 Contactor Basic Bypass with Disconnect Package (Style C)
Rockwell Automation Publication 22C-IN002E-EN-P - November 2010
Main Fuses (FU1-FU3)
For ratings 55 kW (75 Hp) and larger, input line branch circuit protection
fuses must be used to protect the input power lines. If input fuses are not
provided with your drive, recommended fuse values are shown in Table 3.A
.
The input fuse ratings listed in Table 3.A
are applicable for one drive per
branch circuit. No other load may be applied to that fused circuit.
The recommended fuse type for all PowerFlex Drives for Fan and Pump
Applications is UL Class J, 600V.
Table 3.A Fuse Recommendations
Contactors (DIC, DOC, BC)
Allen-Bradley Bulletin 100 Contactors are provided for all ratings. The
contactors function as follows:
• Drive Input Contactor (DIC) opens and closes input to the drive.
• Drive Output Contactor (DOC) opens and closes the connection between
the drive and the motor.
• Bypass Contactor (BC) opens and closes the connection to the line-start
the motor.
ATTENTION: Most codes require that upstream branch circuit
protection be provided to protect input power wiring. Install the
fuses recommended in Table 3.A
. Do not exceed the fuse ratings.
Failure to observe this precaution could result in damage to, or
destruction of, the equipment.
Drive Rating Fuse Rating
Input Voltage kW Hp Amps
460V AC – 3-Phase 55 75 175
75 100 200
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