Danfoss VLT AutomationDrive FC 302, Operating Manual, Page: 109 / 158

Type aR fuses are recommended for drives in enclosure sizes D3h–D4h. See Table 10.10 .
Model 200–240 V 380–500 V 525–690 V
N45K ar-350 – –
N55K ar-400 – ar-160
N75K ar-500 – ar-315
N90K ar-500 ar-315 ar-315
N110 ar-630 ar-350 ar-315
N132 – ar-400 ar-315
N150 ar-800 – –
N160 – ar-500 ar-550
N200 – ar-630 ar-550
N250 – ar-800 ar-550
N315 – – ar-550
Table 10.10 D3h–D4h Power/Semiconductor Fuse Sizes
Bussmann Rating
LPJ-21/2SP 2.5 A, 600 V
Table 10.11 D1h–D8h Space Heater Fuse Recommendation
For UL compliance, use the Bussmann 170M series fuses for units supplied without a disconnect, contactor, or circuit breaker
option. If a disconnect, contactor, or circuit breaker option is supplied with the drive, see
Table 10.12
to
Table 10.15
for SCCR
ratings and UL fuse criteria.
10.7.2 Short-circuit Current Rating (SCCR)
The short-circuit current rating (SCCR) represents the maximum level of short-circuit current that the drive can safely
withstand. If the drive is not supplied with a mains disconnect, contactor, or circuit breaker, the SCCR of the drive is 100000
A at all voltages (200–690 V).
If the drive is supplied with a mains disconnect only, the SCCR of the drive is 100000 amps at all voltages (200–600 V). See
Table 10.12 . If the drive is supplied with a contactor only, refer to Table 10.13 for the SCCR. If the drive contains both a
contactor and disconnect, see Table 10.14 .
If the drive is supplied with a circuit breaker only, the SCCR depends on the voltage. Refer to Table 10.15 .
Enclosure size ≤ 600 V IEC/UL
D5h
100000 A 1)
D7h
100000 A
2)
Table 10.12 D5h and D7h Drives Supplied with a Disconnect Only
1)
With an upstream branch protection Class J fuse with maximum rating of 600 A.
2)
With an upstream branch protection Class J fuse with maximum rating of 800 A.
Enclosure size 415 V
IEC
1)
480 V
UL
2)
600 V
UL
2)
690 V
IEC
1)
D6h 100000 A 100000 A 100000 A 100000 A
D8h (excluding N250 380-500V model) 100000 A 100000 A 100000 A 100000 A
D8h (N250 380-500V model only) 100000 A Contact Danfoss Not applicable Not applicable
Table 10.13 D6h and D8h Drives Supplied with a Contactor Only
1)
With gL/gG fuses: 425 A maximum fuse size for D6h, and 630 A maximum fuse size for D8h.
2) With external upstream Class J fuses: 450 A maximum fuse size for D6h, and 600 A maximum fuse size for D8h.
Specifications Operating Guide
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