3RV Motor Starter Protectors/Circuit Breakers up to 100 A General data Short-circuit breaking capacity I cuIT in the IT system (IT network) according to IEC 60947-2 In the colored areas, I cuIT is 100 kA, or in some ranges it is 50 kA. Therefore the motor starter protectors are short-circuit resistant in these ranges. 3RV1 motor starter protectors are suitable for operation in IT systems. Values valid for triple-pole short-circuit are I cu up to I cs . In case of double ground fault on different phases at the in- put and output side of a motor starter protector, the special short-circuit breaking capacity I cuIT applies.
The specifications in the table below apply to 3RV1 motor starter protectors. If the short-circuit current at the place of installation exceeds the rated short-circuit breaking capacity of the motor starter protec- tor as specified in the table, a back-up fuse is required. The ma- ximum rated current for the back-up fuse is specified in the ta- bles. The rated short-circuit breaking capacity then applies as specified on the fuse. ° No back-up fuse required, since short-circuit resistant up to 100 kA 1) 10 % overvoltage. 2) 5 % overvoltage. 3) Back-up fuse only required, if short-circuit current at the place of installation > I cuIT .
4) Alternatively, fuseless limiter combinations for 690 V AC can also be used. 14 Siemens · 2009 Motor starter protectors Type Rated current In Up to 240 V AC1) Up to 400 V1)/415 V AC2) Up to 500 V1)/525 V AC2) Up to 690 V AC1) IcuIT Max. fuse (gL/gG)3) IcuIT Max. fuse (gL/gG)3)4) IcuIT Max. fuse (gL/gG)3) IcuIT Max. fuse (gL/gG)3) A kA A kA A kA A kA A Size S00 On request On request On request On request 3RV10, 3RV16 11-0BD10 0.16 ... 0.63 100 ° 100 ° 0.8; 1 100 ° 100 ° 1.25; 1.6 100 ° 2 2 2 2 2 2 20 35 40 50 63 80 2; 2.5 100 ° 3.2; 4 100 ° 5; 6.3 100 ° 8; 10 50 80 12 50 80 Size S0 On request On request On request On request 3RV1. 2 0.16 ...
0.63 100 ° 100 ° 0.8; 1 100 ° 100 ° 1.25; 1.6 100 ° 100 ° 2; 2.5 100 ° 8 8 6 6 6 4 25 32 32 50 63 63 3.2 100 ° 4; 5 100 ° 6.3 ... 10 100 ° 12.5 100 ° 16 ... 25 50 80 Size S2 8 8 8 6 6 100 100 100 125 125 6 6 6 4 4 80 80 80 100 100 5 5 5 3 3 63 63 63 80 80 3RV1. 3 16 50 100 20 50 125 25 50 125 32 50 125 40 ... 50 50 160 Size S3 10 8 6 5 5 63 80 80 100 125 5 3 3 2 2 50 63 63 80 100 5 3 3 2 2 50 63 63 80 100 3RV1. 41 40 50 125 50 50 125 63 50 160 75 50 160 90; 100 50 160 Size S3, with increased swit- ching capacity 3RV1. 42 16 100 ° 20 100 ° 25 100 ° 32 100 ° 40 100 ° 50 100 ° 63 100 ° 75 100 ° 90 100 ° 100 100 °