Installation/Wiring 1-7
PowerFlex 4M Adjustable Frequency Drive FRN 1.xx - 2.xx User Manual
Publication 22F-UM001D-EN-E
The PowerFlex 4M does not provide branch short circuit protection. This
product should be installed with either input fuses or an input circuit
breaker. National and local industrial safety regulations and/or electrical
codes may determine additional requirements for these installations.
Fusing
The PowerFlex 4M has been UL tested and approved for use with input
fuses. The ratings in the table that follows are the maximum
recommended values for use with each drive rating. The devices listed in
this table are provided to serve as a guide.
Bulletin 140M (Self-Protected Combination Controller)/UL489
Circuit Breakers
When using Bulletin 140M or UL489 rated circuit breakers, the
guidelines listed below must be followed in order to meet the NEC
requirements for branch circuit protection.
• Bulletin 140M can be used in single and group motor applications.
• Bulletin 140M can be used up stream from the drive without the
need for fuses.
Fuses and Circuit Breakers
ATTENTION: To guard against personal injury and/or equipment
damage caused by improper fusing or circuit breaker selection, use only
the recommended line fuses/circuit breakers specified in this section.
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