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3RN thermistor motor protective relays offer substantial advantages wherever current-dependent protection over circuit-breakers or overload relays is simply not enough. It can be used in situations where overheating may occur and where thermal mapping in the circuit-breakers/ overload relays is unable to detect.
• A single device for all motor outputs
• High contact stability due to models with hard-gold-plated contacts
• Simple and fast fault diagnostics through display of wire breakage and short- circuits in the sensor circuit
• Wide voltage power packs reduce the number of models
• Comprehensive technical approvals: ATEX for dust and gas, UL, CSA, several shipbuilding classifications