Siemens SIRIUS 3RT2 - Performance Features

Product description
3.2 Performance features
SIRIUS 3RA28 function modules for mounting on 3RT2 contactors
Manual, 02/2019, A5E03656507620A/RS-AD/005
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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 contact + 1 NC contact or 1 CO contact)
• ON-delay with/without control signal (1 NO contact + 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