| Rated Operational Voltage | 208 ... 600 V AC |
| Rated Control Supply Voltage (Us) | 100 ... 250 V AC |
| Rated Control Circuit Voltage (Uc) | 24 V DC |
| Rated Frequency (f) |
50/60 Hz
Main Circuit 50 / 60 Hz
|
| Package Level 1 Depth Length/Height/Width |
379 MM 564 MM 352 MM |
| Package Level 1 Gross Weight | 18.5 kg |
High-Performance Soft Starter for Medium-Power Motors:The PSTX300-600-70 is a premium solid-state soft starter from ABB’s PSTX series, designed for 600 V AC systems with a rated current of 300 A, capable of starting motors up to approximately 160 kW (215 HP)—ideal for pumps, fans, compressors, and conveyors.
Soft Starting with Reduced Inrush Current:Uses thyristor phase control to gradually ramp up motor voltage, limiting inrush current to 1.5–5x full load current, minimizing voltage dips and protecting upstream transformers and switchgear.
Integrated Bypass Contactor for High Efficiency:Built-in bypass contactor automatically switches to direct-on-line operation after start-up, bypassing the thyristors. This reduces power losses and heat generation during continuous operation, improving energy efficiency.
Comprehensive Motor and Load Protection:Features include overload, stall, phase loss, phase imbalance, thyristor overtemperature, start time-out, and underload protection (useful for pump dry-run detection)—ensuring safe and reliable operation.
Multiple Start/Stop Modes for Complex Loads:Supports voltage ramp, current limit, kick start (Kick Start™), soft stop, and pump stop modes—ideal for high-inertia or sticky loads such as sludge pumps or crushers.
