Fuses And Circuit Breakers - Danfoss FC 103 Instruction Manual

Specifications

8.8 Fuses and Circuit Breakers

Use recommended fuses and/or circuit breakers on the supply side as protection in case of component breakdown inside
the adjustable frequency drive (first fault).
NOTICE!
Use of fuses on the supply side is mandatory for IEC 60364 (CE) and NEC 2009 (UL) compliant installations.
Recommendations
•
Fuses of the type gG
•
Circuit breakers of Moeller types. When using other circuit breaker types, ensure that the energy going into the
adjustable frequency drive is equal to or lower than the energy provided by Moeller types.
If recommended fuses/circuit breakers are chosen, possible damages to the adjustable frequency drive will mainly be limited
to damages inside the unit. For further information, see Application Note Fuses and Circuit Breakers, MN90T.
The fuses below are suitable for use on a circuit capable of delivering 100,000 Arms (symmetrical), depending on the
8 8
adjustable frequency drive voltage rating. With the proper fusing the adjustable frequency drive Short Circuit Current Rating
(SCCR) is 100,000 Arms.
60
Instruction Manual
Danfoss A/S © Rev. 2014-04-10 All rights reserved. MG16E322