Product description
3.2 Performance features
SIRIUS 3RA28 function modules for mounting on 3RT2 contactors
Manual, 02/2019, A5E03656507620A/RS-AD/005
19
3.2
Performance features
Features
The function modules have the following features:
Function module
Features
Function modules
for direct-on-line
start
Electronic timing relays
with semiconductor
output
•
ON-delay (1 NO contact)
•
OFF-delay with control signal (1 NO contact)
•
Versions with screw-type and spring-loaded connection systems
Solid-state time-delay
auxiliary switches
•
ON-delay (1 NO c 1 NC contact or 1 CO contact)
•
ON-delay with/without control signal (1 NO c 1 NC contact or
1 CO contact)
•
Versions with screw-type and spring-loaded connection systems
Function modules
for star-delta (wye-
delta) start
Star-delta (wye-delta)
start
•
Control exclusively via contactor A1/A2 – no further control circuit
wiring required
•
No control current wiring thanks to plug-in technology and connecting
cables
•
Interchange proof construction
•
Timing function for switching over from star to delta in basic module
•
Electrical interlock without additional wiring
•
Changeover delay time set to a non-adjustable value
of ≥
50 ms