SIRIUS 3RT2 contactors/contactor assemblies
2.8 Technical data
SIRIUS Innovations
System Manual, 01/2011, A8E56203870002-03
269
3RT20 coupling relays for switching motors
Technical data for 3RT20 coupling relays
Unless listed below, the technical data is the same as that for 3RT20 contactors for switching
motors.
Table 2- 108 General data and actuation for coupling relays 3RT201.-..B4. and 3RT202.-..B4.
Type 3RT201.-.HB4. 3RT201.-.JB4. 3RT201.-.KB4. 3RT202.-.KB4.
Size S00 S0
General data
Mechanical durability Operat
ing
cycles
30 million 10 million
Protective separation between coil and
main contacts acc. to DIN EN 60947-1,
Annex N
V 400
Actuation
Magnet coil operating range 0.7 to 1.25 x U
S
At U
S
17 V W 1.4 2.3
24 V W 2.8 4.5
Magnet coil power
input
(for cold coil)
Switch-on power =
holding power
30 V W 4.4 7
Permissible residual current
of electronics (with 0 signal)
mA < 10 mA x (24 V/U
S
) < 6
mA x (24 V/U
S
)
Magnet coil suppressor circuit Without
overvoltage
attenuation
With diode
Suppressor
diode
With varistor
8
Operating times for coupling relays
ï‚· Switching on
ON-delay NO ms 40 ... 130 70 ... 270 - At 17 V
OFF-delay NC ms 30 ... 80 60 ... 250
ON-delay NO ms 35 ... 60 65 ... 90 - At 24 V
OFF-delay NC ms 25 ... 40 55 ... 80
ON-delay NO ms 25 ... 50 52 ... 65
- At 30 V
OFF-delay NC ms 15 ... 30 43 ... 57
ï‚· Switching off at 17 to 30 V
OFF-delay NO ms 7 ... 20 38 ... 65 7 ... 20 19 ... 21
ON-delay NC ms 20 ... 30 55 ... 75 20 ... 30 25 ... 31
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