Protection Relays (Overcurrent, Earth Fault & Motor)
Protection Relays (Overcurrent, Earth Fault & Motor)
Numerical and electromechanical protection relays for feeders, motors, generators and transformers.
- StandardIEC 60255
Circuit Protection
Protection Relays (Overcurrent, Earth Fault & Motor)
Numerical and electromechanical protection relays for feeders, motors, generators and transformers.
Product list
Can't find what you need?We source other makes and special sizes, and make to your drawing.
Request a custom productNo products match your filters. or ask our engineers.
Guides for this range
Transformers & Power Quality
Protection Relays: Overcurrent, Earth Fault, Motor
A practical overview of overcurrent, earth fault and motor protection relays: what each function does, how IDMT curves and grading work, and what to specify when…
7 min readTransformers & Power QualityCurrent and Potential Transformers: Ratio, Burden, Class
Plain-language guide to current and potential transformers: ratio, burden, accuracy class for metering and protection, 1 A versus 5 A secondaries, and the mistakes that cause…
7 min read