Technical Modifications/Restrictions Of 3Rv2 Motor Starter Protectors; Extended Setting Ranges Of Overload Releases (Sizes S00 And S0) - Siemens SIRIUS Manual

6.2.3

Technical modifications/restrictions of 3RV2 motor starter protectors

Restriction of the maximum starting current is necessary for one setting range each of sizes
S0, S2 and S3.
The reason for this lies in the corresponding variants' making and breaking capacities.
3RV2 motor starter protectors
Setting range for overload release
Reduced starting current ratio
Max. permissible starting current
Starting current ratio:
≤ 8 times
8.5 times
9 times
9.5 times
10 times
Note
For size S0, the setting range variants "-4P" (30 to 36 A) and "-4F" (34 to 40 A) are not
suitable for use with IE3 motors.
We recommend the use of size S2 for these current ranges.

Extended setting ranges of overload releases (sizes S00 and S0)

For the following versions of the motor starter protectors (sizes S00 and S0), the setting
ranges of the overload releases have been extended and adapted to the lower rated motor
current of IE3 motors:
Size Article number
S00 3RV2.11-4A...
S0 3RV2.21-4A...
3RV2.21-4B...
3RV2.21-4C...
3RV2.21-4D...
SIRIUS - SIRIUS 3RA load feeders
Manual, 09/2016, A5E03656507520A/RS-AB/003
6.2 Use of 3RA2 load feeders with highly energy-efficient motors (IE3)
3RV2.21-4E...
27 to 32 A
8 times
32 A x 8 = 256 A
Maximum permissible rated operational current [A]
3RV2.21-4E...
32.0
30.2
28.4
27.0
-
Setting range for overload release
Previously
11 to 16 A
11 to 16 A
14 to 20 A
17 to 22 A
20 to 25 A
3RV2.3.-4R... 3RV2.4.-4M...
70 to 80 A 80 ... 100 A
9 times
80 A x 9 = 720 A 100 A x 7.8 = 780 A
3RV2.3.-4R... 3RV2.4.-4M...
80.0
80.0
80.0
75.8
72.0
Setting range for overload release
New
10 to 16 A
10 to 16 A
13 to 20 A
16 to 22 A
18 to 25 A
Configuration
7.8 times
97.5 A
91.8 A
86.6 A
82.1 A
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