The ABB PSTB840-600-70 is a Switch for industrial control and automation applications.
ABB PSTB840-600-70 is a soft starter for main circuits rated 208 ... 600 V AC and 840 A in in-line connection. Its built-in electronic overload protection and 24 V DC control input make it a precise starting solution for large motors.
What are the key specifications of the PSTB840-600-70?
The module supports a rated operational current of 840 A in in-line connection and 1455 A in inside delta connection. Rated operational power reaches 450 kW at 400 V and 600 kW at 500 V in-line, or 800 kW at 400 V and 1000 kW at 500 V inside delta. Control supply voltage is 100 ... 250 V AC, while the control circuit operates at 24 V DC. The rated frequency is 50/60 Hz for both control and main circuit. Starting capacity is 3xIe for 15 seconds, with a current limit function adjustable from 1.5 to 7xIe. Ramp time ranges from 0 to 120 seconds, and initial voltage during start is 30 to 70 %. The service factor is 115 %.
How does the built-in overload protection support maintenance?
Integrated electronic overload protection eliminates the need for external overload relays, reducing wiring and panel space. The module provides four signal relays: run, by-pass, fault, and overload. Each relay gives a clear status output, so technicians can diagnose issues without opening the enclosure. Three LEDs indicate ready-to-start/standby (green), protection (yellow), and fault (red). Analog outputs are available as 0…10 volts, 0…20 mA, or 4…20 mA for remote monitoring. For maintenance planning, the unit permits 10 starts per hour at 3.5xIe for 7 seconds with 50% on time and 50% off time. The ambient operating temperature range is 0 ... +50 °C, and storage is rated -25 ... +70 °C.
How to install and integrate the soft starter?
Main circuit terminals are bars with a hole diameter of 12.5 mm and a width and thickness of 40x6 mm. Control circuit connections accept rigid 1 x 2.5 mm² or 2 x 1.5 mm², and supply circuit connections accept rigid 1 x 2.5 mm². Tightening torque is 0.5 N·m for control and supply circuits, and 45 N·m for the main circuit. The degree of protection for main terminals is IP00 according to IEC 60529, IEC 60947-1, and EN 60529. A FieldBusPlug is standard for communication; integrating into a fieldbus network may require an external gateway or connection module, so confirm cable and gateway compatibility with AutoDCSTech. The switch for inside delta connection is included, and the step-down voltage special ramp is 100 ... 30 %.
What are the dimensions and environmental ratings?
The product measures 436 mm wide, 515 mm high, and 381 mm deep, with a net weight of 60 kg. It is classified under WEEE category 4 for large equipment. The CE declaration of conformity is 1SFA1-76, and the RoHS declaration is 1SFC132035D0201. The customs tariff number is 8503009999.
Contact AutoDCSTech with your exact requirements for precise matching.
Availability & Condition at AutoDCSTech
| Part Number | PSTB840-600-70 |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | Switzerland |
