Overcurrent Protection By Means Of Line Fuses And Circuit Breakers - Siemens 6SL3120-2TE21-0AA3 Manual

3.3

Overcurrent protection by means of line fuses and circuit breakers

Line fuses or circuit breakers must be used for cable protection/overcurrent protection. NH,
D, and DO type fuses with a gL characteristic or suitable circuit breakers according to
IEC 60947 can be used for this purpose.
Table 3- 1 Recommended line fuses and circuit breakers for Active Line Modules
16 kW
I fuse 35 A
n
LV HRC line fuse 3NA3 814
Circuit breaker 3RV1031-4FA10
(IEC 60947)
UL-application
Rated current 35 A
Line fuse AJT35
1)
Circuit breaker 3VL1135-2KM30
Type AJT Class J, source: The Ferraz Shawmut company
1)
Table 3- 2 Recommended line fuses and circuit breakers for Basic Line Modules
I fuse
n
LV HRC line fuse
Circuit breaker
(IEC 60947)
UL-application
Rated current
Line fuse
1)
Circuit breaker
Type AJT Class J, source: The Ferraz Shawmut company
1)
Booksize Power Units
Manual, (GH2), 04/2014, 6SL3097-4AC00-0BP6
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3.3 Overcurrent protection by means of line fuses and circuit breakers
36 kW
80 A
3NA3 824
3RV1041-4LA10
80 A
AJT80
3VL2108-2KN30
20 kW
63 A
3NA3 822
3RV1041-4JA10
60 A
AJT60
3VL2106-2KN30
Line connection and line-side power components
55 kW 80 kW
125 A 160 A
3NA3 132 3NA3 136
3VL2712-1DC33 3VL3720-1DC33
125 A 175 A
AJT125 AJT175
3VL2112-2KN30 3VL3117-2KN30
40 kW
100 A
3NA3 830
3VL2710-1DC33
100 A
AJT100
3VL2110-2KN30
120 kW
250 A
3NA3 144
3VL3725-1DC36
250 A
AJT250
3VL3125-2KN30
100 kW
250 A
3NA3 144
3VL3725-1DC36
250 A
AJT250
3VL3125-2KN30
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