Soft starters and variable speed drives (VSDs) for smoother motor starting, reduced electrical stress and better energy efficiency. Designed for smooth operation, safety and long-term performance.
This range covers soft starters and variable speed drives (VSDs) used to control how an electric motor starts and runs. Soft starters reduce the current and mechanical shock associated with direct-on-line starting, extending the life of motors, belts and couplings and reducing stress on the wider electrical network. Variable speed drives go a step further, allowing continuous control of motor speed and torque to match the load in real time — useful for pumps, fans, conveyors and other variable-load applications where running at full speed constantly wastes energy.
Both soft starters and VSDs are widely used across industrial manufacturing, HVAC, water and utilities, and mechanical services to cut energy costs, reduce maintenance and protect connected equipment. This range suits switchboard builders, OEM machine builders and facility managers looking to retrofit existing motors or specify starting and speed control for new installations, with products selected for reliable operation and straightforward integration into existing control panels.
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A soft starter is generally the simpler, lower-cost option when you only need controlled starting and stopping; a VSD is the better choice if you need to vary motor speed continuously during operation. We can help you weigh up the trade-offs for your application.
In most cases, yes — soft starters and VSDs can typically be retrofitted, though panel space, wiring and motor compatibility should be checked first.
VSDs can introduce harmonics into the electrical supply; filtering options are available where this is a concern, and our team can advise on mitigation for sensitive sites.
How much energy can a VSD save on a pump or fan application?
Savings vary by application, but running a pump or fan at reduced speed via a VSD (rather than throttling at full speed) can meaningfully cut energy use — actual savings depend on the load profile.
What sizes and power ratings are available?
Soft starters and VSDs are available across a range of motor power ratings — let us know your motor’s specifications and we’ll help find a suitable match.
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