Siemens SINAMICS S120 Manual page 52

Line connection and line-side power components
3.3 Overcurrent protection by means of line fuses and circuit breakers
Table 3- 3 Line fuses and circuit breakers for Smart Line Modules booksize and booksize compact
5 kW
I fuse 16 A
n
LV HRC line fuse 3NA3 805
Circuit breaker 3RV2021-4BA10
(IEC 60947)
UL-application
Rated current 17.5 A
Line fuse AJT17-1/2
2)
Rated current 20 A
Circuit breaker 3VL1102-2KM30
For applications according to IEC, equivalent fuses and circuit breakers are permissible.
1)
Type AJT Class J, source: Mersen company (previously Ferraz Shawmut)
2)
If used in conjunction with a residual-current monitor (RCM), circuit breakers providing an
"undervoltage tripping" option must be used, with the following suffixes added to the Article
numbers:
...-2AJ0 for 380 VAC - 415 VAC
...-2AK0 for 440 VAC - 480 VAC
Danger to life through electric shock as well as fire hazard due to overcurrent protective
devices that trip too late
Overcurrent protective devices that do not trip or trip too late can cause an electric shock or
fire.
• To protect personnel and for fire protection purposes, at the infeed point, the short-
• In addition to suitable overcurrent protection devices, in TT line systems use ground-
52
10 kW
35 A
3NA3 814
3RV1031-4FA10
35 A
AJT35
35 A
3VL1135-2KM30
WARNING
circuit rating and loop impedance must correspond to the specifications in the
documentation in order for the installed overcurrent protection devices to trip within the
specified time.
fault circuit interrupters (residual current devices - RCD); from an infeed power of 55 kW
or for plants and systems extending over a wide area, in addition also use differential
current monitoring devices (residual current monitors - RCM).
16 kW 36 kW
35 A 80 A
3NA3 814 3NA3 824
3RV1031-4FA10 3RV1041-4LA10
35 A 80 A
AJT35 AJT80
35 A 80 A
3VL1135-2KM30 3VL2108-2KN30
Manual, (GH2), 07/2016, 6SL3097-4AC00-0BP8
1)
55 kW
125 A
3NA3 132
3VL2712-1DC33
125 A
AJT125
125 A
3VL2112-2KN30
Booksize Power Units