ABB PSE300-600-70-1 | 300A 600V Soft Starter 1SFA897114R7001

ABB 1SFA897114R7001 Soft Starter PSE300-600-70-1

The ABB PSE300-600-70-1 (MPN: 1SFA897114R7001) is a general purpose soft starter that has high efficiency and designed primarily to improve the performance of three-phase asynchronous motors. The rated operating current of this unit is 300A at a voltage envelope of 208V to 600V AC. The design combines a two-phase regulated thyristor topology and an internal bypass contactor system which limits thermal dissipation and energy consumption once the maximum voltage (Top-of-Ramp) is achieved.

This particular setup features advanced torque control parameters designed primarily to reduce transient hydraulic surges such as water hammering in heavy-duty centrifugal pumping designs . The onboard digital processor offers advanced electronic overload protection (EOL), underload sensing and locked-rotor mitigation to help prolong the life of the system in harsh industrial and marine settings.

Key Features

1. Integrated Bypass Contactor – Dramatically minimizes continuous heat generation inside control enclosures by shunting the thyristors after start, maximizes overall system efficiency.
2. Advanced Torque Control Software: it mitigates dynamic pressure variations in starting and stopping ramps, avoiding mechanical wear in fluid networks.
3. Full Motor Protection Built-in electronic overload (EOL), underload tracking and locked-rotor trip devices prevent problems before any winding damage can occur.
4. High Contrast Language Neutral Display: High contrast lit display that uses universal engineering symbols for worldwide operating understanding.

Terminal Allocations

Main Circuit Terminals (L1, L2, L3 / T1, T2, T3)

• Terminal Interface Type: Heavy-duty copper busbars.
• Hole Diameter: 8.5 mm.
• Busbar Width & Thickness: 17.5 mm x 5.0 mm.
• Conductor Connecting Capacity: Rigid lug configurations handling 1/2 x 2.5 mm² to 70 mm².
• Engineering Tightening Torque: 28 N·m (247.8 in·lb).

Compatible Equipment Models

• Three-Phase Asynchronous Induction Motors: Optimized for low-voltage square-cage motors rated between 50 HP and 300 HP under UL/CSA protocols depending on network distribution.
• Control Mechanisms: Fits seamlessly with ABB AF260 to AF370 contactors for upstream isolation line control.
• Communication Platforms: Modbus RTU (native), DeviceNet, Profibus DP V0/V1 via optional ABB FieldBusPlug adapters.

Part Number Cross-References

• ABB Internal ID: 1SFA897114R7001
• EAN Global Identifier: 7320500515044
• Type Code: PSE300-600-70-1
• Alternative Industry Designations: ABB PSE300600701, 1SFA897114R7001-PSE300

Engineer’s Guide from NDMarineTech:

1. Thermal Management: Even though the bypass internal relays significantly limit continuous thermal output, always verify enclosure cooling configurations. When installing the IP00 module in environments with ambient high-humidity profiles, incorporate an active anti-condensation heater within the panel space to prevent condensation on the internal PCBs during long periods of shutdown.
2. Marine Baseplate Isolation: Torque down the main structural busbar terminals strictly to the 28 N·m specification using an industrial digital torque wrench. Constant low-frequency shipboard vibrations can cause loose electrical terminations, which could create unbalanced phase loading or localized thyristor thermal failures over long voyages.
3. Overload Sizing: For heavy cyclical duty profiles, such as marine air compressors or hydraulic bow thruster priming packs, ensure the Electronic Overload (EOL) trip class parameter is modified to match Class 20 or Class 30 thermal capacities to prevent nuisance trips during prolonged start ramps.