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Compact three phase solid state relay

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PRACTICAL Control Solutions has released a range of compact three phase solid state contactor assemblies.

The assemblies are suitable for most ac loads and are suitable for applications where repetitive switching causes premature failure of electromechanical contactors.

The solid state contactors are available with current ratings of 40, 70, and 90 amps and can switch voltages up to 520V ac. Control voltage can be either 5-30V dc or 90-240V ac.

Each assembly includes a fan cooled heat sink, high quality SCR-based solid state relays, metal oxide varistors for transient voltage protection, heat sink overtemperature switch and integral fast fuses approved to BS88:4.

Typical applications include process heating tasks such as plastic injection moulding, blow moulding, vacuum and pressure forming, packaging, and air duct heating.

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