NR8 Thermal Overload Relay
Nr8 series thermal overload relay (hereinafter referred to as thermal relay) is used to provide overload and phase failure protection for AC motors with a frequency of AC 50Hz/60Hz, a voltage of up to 690V and a current of 0.1A~38A that operate continuously or intermittently.
The thermal relay also has temperature compensation, operation indication, automatic and manual reset and stop functions and stable and reliable performances.
Standard: IEC 60947-4-1.
Plug-in mounting is used between the thernal relay and the contactor.
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Technical data of the network at the point considered:the earthing systems (TNS, TNC),short-circuit current at the circuit-breaker installation point, which must always be less than the breaking capacity of this device,network normal voltage.
Tripping curves:
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protection for people and big length cables in TN and IT
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protection of circuits against short-circuit currentsprotection of circuits against overload currents,switch,isolation,
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Technical data of the network at the point consideredshort-circuit current at the circuit-breaker installation point, which must always be less than the breaking capacity of this device,
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Rated residual operating current
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Rated residual operating current
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protection of circuits against short-circuit currents,protection of circuits against overload currents,switch,isolation.
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Technical data of the network at the point considered:short-circuit current at the circuit-breaker installation point, which must always be less than the breaking capacity of this device,network normal voltage.
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