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LV CURRENT TRANSFORMERS
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LV VOLTAGE TRANSFORMERS
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MV CURRENT TRANSFORMERS
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MV VOLTAGE TRANSFORMERS
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DAMPING REACTORS
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POST AND BUSHING INSULATORS
RS ISOLSEC, your reference partner for instrument transformers since 1954.
Our range includes current and voltage transducers, current transformers, split cores and resin insulators.
Our expertise covers energy metering, overcurrent protection, earth fault protection and differential protection.
Our technology measures high currents (up to 60,000A) and homopolar currents.
Some of our devices can be used in ATEX zones (consult us).
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WORLD DOWN SYNDROME DAY
Mismatched socks to celebrate diversity and break down prejudices
RS ISOLSEC SUPPORTS BIODIVERSITY
Our Hive located in La Ferté St Aubin. With Adopt a Hive, we’re helping to save bees while improving our region’s biodiversity




















