Fuses And Circuit Breakers - Danfoss VLT Refrigeration Drive FC 103 Operating Instructions 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 break-down inside
the frequency converter (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. By use of other circuit breaker types, ensure that the energy into the frequency
converter is equal to or lower than the energy provided by Moeller types.
If fuses/circuit breakers according to recommendations are chosen, possible damages on the frequency converter 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
frequency converter voltage rating. With the proper fusing the frequency converter Short Circuit Current Rating (SCCR) is
100,000 Arms.
8.8.1 CE Compliance
200-240 V
Enclosure Power [kW]
type
A2 1.1-2.2
A3 3.0-3.7
B3 5.5-11
B4 15-18
C3 22-30
C4 37-45
A4 1.1-2.2
A5 0.25-3.7
B1 5.5-11
B2 15
C1 18-30
C2 37-45
Table 8.8 200-240 V, Enclosure Types A, B and C
MG16E302
Operating Instructions
Recommended Recommended
fuse size max. fuse size
gG-10 (1.1-1.5)
gG-16 (2.2)
gG-16 (3)
gG-20 (3.7)
gG-25 (5.5-7.5)
gG-32 (11)
gG-50 (15)
gG-63 (18)
gG-80 (22) gG-150 (22)
aR-125 (30) aR-160 (30)
aR-160 (37) aR-200 (37)
aR-200 (45) aR-250 (45)
gG-10 (1.1-1.5)
gG-16 (2.2)
gG-10 (0.25-1.5)
gG-16 (2.2-3)
gG-20 (3.7)
gG-25 (5.5)
gG-32 (7.5-11)
gG-50
gG-63 (18.5) gG-160 (18.5-22)
gG-80 (22) aR-160 (30)
gG-100 (30)
aR-160 (37) aR-200 (37)
aR-200 (45) aR-250 (45)
Danfoss A/S © Rev. 2014-02-06 All rights reserved.
Recommended circuit
breaker (Moeller)
gG-25 PKZM0-25
gG-32 PKZM0-25
gG-63 PKZM4-50
gG-125 NZMB1-A100
NZMB2-A200
NZMB2-A250
gG-32 PKZM0-25
gG-32 PKZM0-25
gG-80 PKZM4-63
gG-100 NZMB1-A100
NZMB2-A200
NZMB2-A250
8
Max. trip level [A]
25
25
50
100
150
250
25
25
63
100
160
250
53
8