Differential relays and magnetic cores

When combined with electrical switching products, differential relay protection devices are used to protect installations against indirect contacts.

Differential relays and core balance transformers are used to protect installations, limit earth leakage currents and secure signalling by reactivating connected systems.

Differential relays can be used for variable speed drives, motor feeders or feeders with automatic reclosing. They are particularly useful when applied to street lighting, water treatment, telecoms, industry, agricultural buildings or solar energy installations.