Surge Suppressors – Product Summary
Surge Suppressors are engineered devices designed to protect electrical equipment—such as motors, generators, transformers, and filter banks—from damaging transient overvoltage spikes and surges. These high-frequency transient events can be caused by switching operations and other sources, and if left unprotected can lead to insulation failure, downtime, and costly repairs.
Key Features
Protects against steep wave-front, short rise-time, high-magnitude voltage spikes and surges.
Helps minimise insulation stress and extend the service life of connected equipment.
Suitable for both three-phase and single-phase systems across a wide range of rated voltages (up to medium voltage levels).
Available in compact formats that can be fitted inside motor/transformer terminal enclosures or switchgear panels.
Options include intrinsically safe models for harsh environments.
Operating Characteristics
Designed for high-frequency transient protection, with response times in the order of 0.1–0.2 microseconds.
Can protect system voltages from low to several kilovolts, depending on configuration.
Typical Applications
Motors and motor-driven equipment (fans, compressors, pumps, conveyors).
Generators and motor-generator sets.
Transformers and substations.
Industrial machinery and auxiliary power systems.
Surge Suppressors provide essential overvoltage protection that enhances system reliability, reduces the risk of electrical faults, and supports long-term equipment performance in industrial power networks.
