Siemens Sinamics CU240D-2 DP Operating Instructions Manual page 51

Branch circuit protection according to IEC
Table 4- 6
Max. rated current of the protec-
tion device
25 A
30 A
Branch circuit protection according to UL standards
Use in North America requires protection devices that meet UL standards as detailed in the
following tables.
Table 4- 7
Protection device
Fuses of any manufacturer with faster tripping characteristic than class RK5, e.g.
class J, T, CC, G, or CF
SIEMENS circuit breaker
Intrinsically safe SIEMENS circuit breaker
Table 4- 8
Max. rated current of the fuse
30 A
Table 4- 9
Max. rated current of the
circuit breaker
30 A
25 A
22 A
Converter with the control units CU240D-2
Operating Instructions, 04/2018, FW V4.9 SP10, A5E34262100B AF
Branch circuit protection according to IEC
Article No. of the fuse
3NA3810
-
Overview of the approved protection devices according to UL standards
Branch circuit protection with non-semiconductor fuses of Classes J, T, CC, G or CF (UL
Category Code JDDZ)
Short circuit current rating SCCR
65 kA, 480 V 3 AC
Branch circuit protection with circuit breaker, UL categories DIVQ and NKJH
Article No.
3RV2711...
3RV1742..., LGG... or CED6...
3RV2021-4DA...
3RV1031-4DA... or 3RV2031-4DA...
3RV2721...
Installation
4.2 Electrical Installation
Article No. of the circuit breaker
3RV2021..., 3RV1031...,
3RV2031...
3RV1742
UL category
JDDZ
DIVQ
NKJH
UL cat. Short circuit cur-
rent rating SCCR
DIVQ 65 kA,
480Y/277 V AC
DIVQ 65 kA, 480 V 3
AC
NKJH 65 kA,
480Y/277 V AC
NKJH 65 kA,
480Y/277 V AC
DIVQ 50 kA,
480Y/277 V AC
49