The ABB PST250-600-70 is a Switch for industrial control and automation applications.
ABB PST250-600-70 is a softstarter for main circuits rated 208 ... 600 V AC and in-line currents up to 250 A. Industrial starting has moved from direct-on-line contactors toward controlled ramps, and this model carries that evolution with a 0 ... 120 s ramp time and built-in electronic overload protection.
What are the key specifications of the PST250-600-70 softstarter?
This unit combines a 250 A in-line rating with a 430 A inside delta rating, so engineers can size the starter to the motor connection method. Control supply accepts 100 ... 250 V AC, while the control circuit operates at 24 V DC. The table below lists verified parameters from the datasheet.
- Rated Operational Voltage: Main Circuit 208 ... 600 V AC
- Rated Control Supply Voltage (Us): 100 ... 250 V AC
- Rated Control Circuit Voltage (Uc): DC Operation 24 V
- Rated Operational Current - In-Line Connection (Ie): 250 A
- Rated Operational Current - Inside Delta Connection: 430 A
- Rated Operational Power - In-Line Connection (Pe): (400 V) 132 kW, (500 V) 160 kW
- Rated Operational Power - Inside Delta Connection: at 400 V 220 kW, at 500 V 295 kW
- Ramp Time: 0 ... 120 s
- Current Limit Function: 1.5 ... 7xIe
- Degree of Protection: acc. to IEC 60529, IEC 60947-1, EN 60529 Main Terminals IP00
How does This unit handle motor starting and protection?
Starting capacity reaches 3xIe for 15s, and the current limit function spans 1.5 ... 7xIe. Initial voltage during start is adjustable from 30 ... 70 %. Integrated electronic overload protection is built in, and the service factor is 115 %. Four signal relays cover run, by-pass, fault and overload status, while analog outputs provide 0…20 mA and 4…20 mA signals. LED indication uses green for ready to start, yellow for protection and red for fault.
Where does this softstarter fit in a control cabinet?
The unit measures 360 mm wide, 420 mm high and 270 mm deep, with a net weight of 23 kg. Main circuit terminals use bars with a 10.2 mm hole diameter and 20x5 mm width and thickness. Control circuit wiring accepts rigid 1 x 2.5 mm² or 2 x 1.5 mm² conductors, tightened to 0.5 N·m. Main circuit torque is 28 N·m. Ambient operating temperature is 0 ... +50 °C, and storage range is -25 ... +70 °C.
How does the inside delta connection change current ratings?
With the inside delta switch enabled, rated operational current rises to 430 A and rated power reaches 220 kW at 400 V or 295 kW at 500 V. The in-line connection remains at 250 A and 132 kW at 400 V or 160 kW at 500 V. This flexibility lets the same frame serve different motor winding arrangements without changing the starter.
What communication option does This unit provide?
A FieldBusPlug is listed as standard communication. The exact fieldbus protocol is not specified in the source data, so confirm gateway and cable requirements with AutoDCSTech before integration. The starter also provides analog outputs for external monitoring.
Contact AutoDCSTech with your exact requirements for precise matching.
Availability & Condition at AutoDCSTech
| Part Number | PST250-600-70 |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | Switzerland |
