Soft Starter for Fans and Blowers
How to size and configure a soft starter for high-inertia, belt-driven fans and blowers.
Soft Starter for Pumps: Sizing and Settings
How to size current limit, ramp time, and soft-stop settings for a soft starter on a centrifugal pump, and when a VFD is the better fit instead.
Best Soft Starter Brands for Industrial Motors Ranked
A ranked comparison of ABB PSTX, Schneider Altistart ATS480, Siemens SIRIUS 3RW55, and budget soft starter brands by torque control, bypass design, and prote...
Siemens SIRIUS 3RW Soft Starter: Full Range Review
A full comparison of the Siemens SIRIUS 3RW50, 3RW52 and 3RW55 soft starter lines, covering control method, bypass, safety input and torque control to pick t...
Schneider Altistart ATS22 vs ATS480: Which to Choose
A side-by-side comparison of the Schneider Altistart ATS22 and ATS480 soft starters covering control method, bypass, communication, current range, and protec...
Schneider Altistart ATS480 Soft Starter: Full Range Review
A full technical review of the Schneider Altistart ATS480 soft starter range, covering ratings, torque control, bypass, and duty sizing.
ABB PSE vs PSTX vs PSR: Which ABB Soft Starter
A breakdown of how ABB's PSR, PSE, and PSTX soft starters split on control method, bypass, rating, and protection, and which one fits a given motor.
ABB PSTX Soft Starter: Full Range Review
A full range review of ABB PSTX soft starters covering torque control, built-in bypass, current ratings, fieldbus options, and sizing versus PSE and PSR.
ABB PSTX vs Schneider ATS480 vs Siemens 3RW55 Soft Starter
A side-by-side comparison of the ABB PSTX, Schneider Altistart ATS480 and Siemens SIRIUS 3RW55 flagship soft starters on torque control, bypass, communicatio...
Soft Starter Start Current, Starts Per Hour and Duty Cycle
How the current-limit setting, AC-53a duty codes and starts-per-hour thermal limits combine to size a soft starter correctly for cycling loads.
