Thermal overload relays offer phase failure protection and are convertible from manual to automatic reset.

过热负载继电器具有相位故障保护和从手动转换为自动重置的功能.

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So developing the research on the reliability test technology of thermal overload relay has great signifi.

因此开展对热过载继电器可靠性试验技术的研究具有重要意义.

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They also feature thermal overload protection to safeguard the motor from extreme temperatures.

它们具有过热保护功能,保护电机免受极端温度的影响.

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