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Star-delta, automatic DIN rail
Star-delta starter 7.5kW 400V/AC-3 20A, control voltage Uc: 230V
with undervoltage release and overload protection, on DIN rail.
Item No. 0098.4301
Setting for the built-in overload protection:
(setting values for overload protection = rated motor current x 0.58)
Rated motor current 6.0-8.3 = setting 3.5-4.8A
Rated motor current 7.8-10.9 = setting 4.5-6.3A
Rated motor current 9.5-12.0 = setting 5.5-7.5A
Rated motor current 12.4-17.2 = Setting 7.2-10.0A
Rated motor current 15.5-21.5A = setting 9-12.5A (*)
(*) Fitted as standard
Versions
| Item No. | Delivery Time | Stock | Quantities / Prices |
|---|---|---|---|
| 0098.4301 | 3 day(s) | 4 |
Technical Features
Series Specifications
Star-delta conversion
Automatically with adjustable rise time
Under-voltage release
Standard
Overload protection
Standard
Electronic brake ASB20
Optional
Attachment
Slot hole in DIN standard rail
Individual Parameters
Switching power
7.5kW 400V~/AC-3
Under-voltage release Uc
230V/50Hz
Yes
20.0 A
Electronic brake
No
Overload protection
Adjustable 9.0-12.5A
Setting overload protection
Motor rated current x 0.58
Note on motor
Motor must be suitable for 400V delta connection.
Connection control elements
2.5mm² terminal blocks
Connection power supply and motor
4mm² terminal blocks
Manufacturer
Klinger & Born GmbH, In den Schlangenäckern 5, DE - 64395 Brensbach
Functional description
Automatic star-delta starters are used with asynchronous motors from 4kW to prevent unacceptably high inrush currents during startup. The advantage over manually operated star-delta starters is that these starters have control logic or can be manually operated, allowing the startup time to be optimally adjusted to the specific application.
The startup is realized with a contactor control, a special time relay, and an integrated overload relay. By adhering to important switching sequences and locking the control, high operational safety is achieved.
The switching time should be set so that when switching from star to delta, at least 80% of the nominal speed is reached. A motor suitable for star-delta starting must have a voltage output of 380V / 660V or delta 380V at a mains voltage of 380V. Motors with 6 lead winding ends are needed for connection.
These star-delta starters are used in machine tools, woodworking machines, compressors, and more. Furthermore, these starters can also be configured with our new brake controls.