Degree of pollution, IEC 60255-27
2
Maximum operating altitude above sea level
2000 m (6561.68 ft)
UL Note
Type 1 if mounted into a door or front cover of an enclosure.
When expanding the device with the 2nd device row, then they must be mounted completely inside an
enclosure.
Tightening Torques for Terminal Screws
Type of Line
Current Terminal
Voltage Terminal with
Spring-Loaded Terminals
Voltage Terminal with
Screw Connection
Stranded wires with ring-
type lug
2.7 Nm
No ring-type lug
No ring-type lug
Stranded wires with boot-
lace ferrules or pin-type
lugs
2.7 Nm
1.0 Nm
0.6 Nm
Solid conductor, bare
(2 mm
2
)
2.0 Nm
1.0 Nm
–
Bare stranded wire
Not permitted
1 Nm
0.6 Nm
i
i
NOTE
For current and voltage terminals, the maximum speed of the tool must not exceed 640 rpm.
i
i
NOTE
Use copper cables only.
Torques for Other Screw Types
Screw Type
Torque
M4 x 20
1.2 Nm
M4 x 8
1.2 Nm
M2.5 x 6
0.39 Nm
Countersunk screw, M2.5 x 6
0.39 Nm
Countersunk screw, M2.5 x 8
0.39 Nm
Collar screw, M4 x 20
0.7 Nm
Technical Data
11.1 General Device Data
SIPROTEC 5, Low-Impedance Busbar Protection, Manual
911
C53000-G5040-C019-C, Edition 04.2021
