Versions - Siemens SIRIUS 3RU Manual

3.2

Versions

Sizes, setting ranges, and device versions
The table below provides an overview of the various sizes in which 3RU21 thermal overload
relays and 3RB20 / 3RB21 and 3RB30 / 3RB31 electronic overload relays are available. The
maximum rated currents, the minimum and maximum setting ranges, and the available
tripping classes are listed for each individual size.
Table 3- 1 3RU21 thermal overload relays
Size Width
S00 45 mm
S0 45 mm
S2 55 mm
S3 70 mm
Table 3- 2 3RB20 / 3RB30 electronic overload relays
Size Width
S00 45 mm
S0 45 mm
S2 55 mm
S3 70 mm
S6 120 mm
S10 / S12 145 mm
SIRIUS 3RU thermal overload relays / SIRIUS 3RB electronic overload relays
Manual, 09/2016, A5E03656507420A/RS-AB/003
Current range Rated operating
voltage U
0.11 to 16 A 690 V AC
1.8 to 40 A
11 to 80 A
28 ... 100 A 690 V AC
Current range Rated operating
voltage U
0.1 to 16 A 690 V AC
0.1 to 40 A
12.5 to 80 A 690 V AC
Through-hole
technology: 1000
V AC
12.5 ... 115 A 1000 V AC
50 ... 200 A 690 V AC
55 ... 250 A to 690 V AC
160 ... 630 A
Rated frequency
e
50/60 Hz
Rated frequency
e
50/60 Hz
Product description
3.2 Versions
Trip class
CLASS 10
CLASS 10 or
CLASS 10A
CLASS 10
Trip class
CLASS 10E or 20E
(fixed)
19