Siemens SIRIUS 3RF Series

SIRIUS 3RT2 contactors/contactor assemblies
2.8 Technical data
SIRIUS Innovations
System Manual, 01/2011, A8E56203870002-03
257
Table 2- 93 CSA and UL rated data (3RT202. contactors)
Type 3RT20
23
3RT20
24
3RT20
25
3RT20
26
3RT20
27
3RT20
28
Size S0
CSA and UL rated data
Rated insulation voltage V AC 600
Continuous current,
at 40 °C
 Open and
encapsulated
A 35 42
Maximum horsepower ratings
(CSA- and UL-approved values)
At 200 V hp 2 3 5 7.5 10 10
230 V hp 3 3 5 7.5 10 10
460 V hp 5 7.5 10 15 20 25
 Rated powers of three-phase
motors at 60 Hz
575 V hp 7.5 10 15 20 25 25
Short-circuit protection
1)
(contactor or overload relay)
At 600 V kA 5
 Fuse class RK5
A 45 45 45 70 110 110
 Circuit breakers
with overload
protection acc. to
UL 489
A 70 70 70 100 100 100
 Combination motor controller type E to UL 508
Type 3RV202
A ---
2)
- At 480 V
kA ---
2)
Type 3RV202
A ---
2)
- At 600 V
kA ---
2)
1)
For more detailed information about short-circuit values, e.g. for protection against high short-circuit currents, see the UL
reports (http://www.siemens.com/lowvoltage/support) for the individual devices.
2)
Values available in October 2010.
NEMA/EEMAC ratings
NEMA/EEMAC size hp --- 1
Continuous current
- Open A --- 27
- Encapsulated A --- 27
At 200 V hp --- 7.5 7.7
230 V hp --- 7.5
460 V hp --- 10
 Rated powers of three-phase
motors at 60 Hz
575 V hp --- 10
Overload relay
 Type
3RU2126/3RB3026
 Setting range
A 1.8 to 40 / 0.1 to 40