PPTC特点: 电阻低   过流保护  过温度保护  可重复使用

Features：Provide dual protection for over-current & over-temperature generated after the motor stalling,Protection lifetime is more than 2000 times,Rapidly cool the motor after stalling protection,Protection time can be adjusted and set according to the customers’ requirements,Configuration and dimension can be customized according to the allowed motor inner space,No electromagnetic noise,Outstanding anti-vibration ability,Operation temperature: -40℃～85℃/125℃production. 

IH=Hold current: maximum current at which the device will not trip at 25℃ still air.

IT=Trip current: minimum current at which the device will always trip at 25℃ still air.

Vmax=Maximum voltage device can withstand without damage at rated current.

Imax=Maximum fault current device can withstand without damage at rated voltage. 

Max Time-to-trip=Maximum time to trip(s) at assigned current.

Pd max=Maximum power dissipation: maximum power dissipated by the device when in state air environment.

Rmin=Minimum device resistance at 25℃ prior to tripping.

Rmax=Maximum device resistance at 25℃ prior to tripping.

R1max=Maximum device resistance at 25℃, of device one hour after being tripped the first time.

特点：对电机熄火后产生的过电流和过温提供双重保护，保护寿命超过2000次，熄火保护后快速冷却电机，保护时间可根据客户要求进行调整和设置，配置和尺寸可根据允许的电机内部空间定制，无电磁噪音，抗振能力强，工作温度：-40℃～85℃/125℃生产。

IH=保持电流：在25℃静止空气中设备不会跳闸的最大电流。

IT=跳闸电流：装置在25℃静止空气中始终跳闸的最小电流。

Vmax=设备在额定电流下能够承受的最大电压，且不会损坏。

Imax=设备在额定电压下能够承受的最大故障电流，且不会造成损坏。

最大跳闸时间=指定电流下的最大跳闸时间。

Pd max=最大功耗：设备在空气环境中的最大功耗。

Rmin=跳闸前25℃时的最小设备电阻。

Rmax=跳闸前25℃时的最大设备电阻。

R1max=装置首次跳闸一小时后25℃时的最大装置电阻。