Siemens SIRIUS 3RH Series - Versions

SIRIUS 3RV2 motor starter protectors
4.2 Product description
SIRIUS Innovations
System Manual, 01/2011, A8E56203870002-03
381
4.2.2 Versions
Device versions
● Motor starter protectors, standard version (3RV20)
Overload and short-circuit protection
● Motor starter protectors with relay function (3RV21)
Short-circuit protection and auto-RESET in the event of overload in one device
● MSP for starter combinations (3RV23)
Short-circuit protection only
Combined with overload relay, large setting ranges and auto-RESET
● MSP for transformer protection (3RV24)
Standard version for transformers
● Approved devices for North America according to UL489 (3RV27/3RV28)
Overload/short-circuit protection and transformer protection
Sizes
3RV2 motor starter protectors are available in two sizes, S00 and S0.
The table below lists the sizes and the corresponding maximum rated current at a voltage of
400 V AC. The last column of the table indicates the maximum power of the three-phase
motor which is suitable for the relevant size.
Table 4- 2 Motor starter protector sizes
Size Width Max. rated current Power of three-phase motor
S00 45 mm
1)
16 A 7.5 kW
S0 45 mm
1)
40 A
2)
18.5 kW
1)
3RV21: 65 mm
2)
3RV20 and 3RV23 only
Number of poles
3RV2 motor starter protectors have 3 poles.