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SIRIUS overload relays with screw-type connections reliably protect loads as well as other switching and protective devices in the respective load feeder from overload, phase imbalance and phase failure. Thanks to ATEX certification, they can be used in many different applications, even under the particularly harsh conditions of the process industry. The overload relays are easily fitted to the contactors of the modular SIRIUS system. In the main circuit, the 3RU thermal overload relays are responsible for current-dependent overload protection of electrical loads (e.g. motors).
• Can be directly mounted to SIRIUS range of contactors
• Running cost reduction due to less power loss
• Sealing cap on setting dial to prevent direct access