FC101 Design Guide

ManualsBrandsSystemair ManualsElectrical accessories VentilationFC101-37kW/73A-IP20, 50/20m - frequency inverter 400V, no display, controller

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8.3 Fuses and Circuit Breakers

Branch circuit protection

To prevent re hazards, protect the branch circuits in an

installation - switch gear, machines, and so on - against

short circuits and overcurrent. Follow national and local

regulations.

Short-circuit protection

Danfoss recommends using the fuses and circuit breakers

listed in Table 8.11 to protect service personnel or other

equipment in case of an internal failure in the unit or a

short circuit on the DC link. The frequency converter

provides full short-circuit protection in case of a short

circuit on the motor.

Overcurrent protection

Provide overload protection to avoid overheating of the

cables in the installation. Overcurrent protection must

always be carried out according to local and national

regulations. Circuit breakers and fuses must be designed

for protection in a circuit capable of supplying a maximum

of 100000 A

rms

(symmetrical), 480 V maximum.

UL/Non-UL compliance

To ensure compliance with UL or IEC 61800-5-1, use the

circuit breakers or fuses listed in Table 8.11.

Circuit breakers must be designed for protection in a

circuit capable of supplying a maximum of 10000 A

rms

(symmetrical), 480 V maximum.

NOTICE!

In the event of malfunction, failure to follow the

protection recommendation may result in damage to the

frequency converter.

Circuit breaker Fuse

UL Non-UL UL Non-UL

Bussmann Bussmann Bussmann Bussmann

Maximum

fuse

Power [kW (hp)] Type RK5 Type RK1 Type J Type T Type G

3x200–240 V IP20

0.25 (0.33)

– –

FRS-R-10 KTN-R10 JKS-10 JJN-10 10

0.37 (0.5) FRS-R-10 KTN-R10 JKS-10 JJN-10 10

0.75 (1.0) FRS-R-10 KTN-R10 JKS-10 JJN-10 10

1.5 (2.0) FRS-R-10 KTN-R10 JKS-10 JJN-10 10

2.2 (3.0) FRS-R-15 KTN-R15 JKS-15 JJN-15 16

3.7 (5.0) FRS-R-25 KTN-R25 JKS-25 JJN-25 25

5.5 (7.5) FRS-R-50 KTN-R50 JKS-50 JJN-50 50

7.5 (10) FRS-R-50 KTN-R50 JKS-50 JJN-50 50

11 (15) FRS-R-80 KTN-R80 JKS-80 JJN-80 65

15 (20)

Cutler-Hammer

EGE3100FFG

Moeller NZMB1-

A125

FRS-R-100 KTN-R100 JKS-100 JJN-100 125

18.5 (25) FRS-R-100 KTN-R100 JKS-100 JJN-100 125

22 (30)

Cutler-Hammer

JGE3150FFG

Moeller NZMB1-

A160

FRS-R-150 KTN-R150 JKS-150 JJN-150 160

30 (40) FRS-R-150 KTN-R150 JKS-150 JJN-150 160

37 (50)

Cutler-Hammer

JGE3200FFG

Moeller NZMB1-

A200

FRS-R-200 KTN-R200 JKS-200 JJN-200 200

45 (60) FRS-R-200 KTN-R200 JKS-200 JJN-200 200

3x380–480 V IP20

General Specications

VLT

HVAC Basic Drive FC 101