表面貼裝雙金屬熱熔斷開關供應商

China custom bimetallic thermal disc cutoff switch has surface mount and PCB plug-in installation. Overheat circuit cutoffs switch (雙明恆溫器) 是設計用於在溫度過高的情況下確保組件安全的設備. List of Select Surface Mount Thermal Switches and thermal protectors product Specs, datasheets, manufacturers & suppliers.

Surface Mount Bimetal disc Thermal Switch are indispensable components in the safe and efficient operation of motors/ Electrical appliances. 透過防止過熱, they protect Electrical appliancesfrom damage, 延長其使用壽命, 減少火災風險, 確保安全運行, 並最大限度地減少停機時間和維護成本. 另外, Bimetal disc thermal switch help in complying with industry safety standards, 讓營運商和利害關係人安心. 隨著科技的進步, thermal switch continue to evolve, 為各種應用中的馬達提供更精確、更可靠的保護.

隨著科技的發展, 馬達的應用範圍越來越廣泛, 尤其是電機在日常生活和生產中的使用也越來越重要. 但電機燒毀事故也時有發生, 在現實生活中, 馬達燒毀主要是以下堵塞線圈過熱造成的, 負載太大馬達過載, 缺相等原因. Installing a heat protector is one of the effective ways to protect the motor. 熱敏開關, 也稱為溫度開關, 溫控開關, ETC. 是一種以雙金屬片作為感溫元件的溫度開關, 當電器正常工作時, 雙金屬片處於自由狀態, 觸點處於斷開狀態, 當溫度升至動作溫度值時, 雙金屬元件受熱產生內應力并快速動作, 打開聯絡方式, 切斷/連接電路, so as to play a bimetal thermal switch role. Wait until the ambient temperature drops to thereset temperature of the protector, 觸點將重新閉合所連接的電路, 馬達將再次工作.

Temperature Switch for Motor Heat Sink Cooling Fan

17AM Normally Closed thermal Switch Thermostat For Motor

Surface Mount motor KSD9700 Bimetal temperature switch thermostat

Choosing The Right thermal switch
How to choose the right circuit Off bimetal disc switch is very important, 否則不但不能起到保護作用, 但會因選型錯誤而導致馬達無法運作, 甚至燒毀.

1. 電壓 & 當前測定
• Bimetal disc thermal switch have different voltage ranges 400V 380V 230V 220V 110V, DC motors will also have 36V 24V 12V, ETC。, according to different working voltages to choose different rated voltage protectors, 原則, 實際應用電壓小於或等於保護器額定電壓, 例如, 380V motor cannot choose rated voltage 220V protector, 額定電壓220V保護器可用於110V電機;

• The current of the electrical appliances motors is divided into three kinds of starting current, 正常工作電流和阻斷電流, the rated current of the protector should be greater than the maximum value of the three currents, 並且需要留有餘量. 例如, 馬達正常工作電流1A, 啟動電流1.5A, 阻斷電流2A, then the rated current of the selected protector is at least 2A, 額定電流最好選擇3A或5A，保留餘裕. Some motor starting current is greater than the rated current of the protector, 但啟動時間較短, 正常工作電流和閉鎖電流均小於保護器的額定電流, 在這種情況下, 你也可以選擇這個保護器. 因為啟動電流大於額定電流, 但由於時間短, the thermal effect of the current has not had time to make the double piece heat leading to protection of the protector, 以免造成誤操作.

White-Rodgers / RS PRO Surface Mount Bimetal Disc Thermostat

雙金屬溫控器 KSD301 0C~350C 熱控 85C 95C 105C 125C 135C 145C 180C 250C 300C 350C 度

KSD301 Bimetal Thermostats Thermal Cutoff Switch

2. Choose to thermal switch the temperature
• The choice of thermal switch temperature is related to three factors: insulation level of enameled wire, installation position and protector type.

The thermal switch temperature is lower than the maximum allowable temperature, 例如, the maximum temperature ofF class is 155℃, and the actual selection can be 145℃ or 150℃.

•The installation position is divided into built-in inside the coil and bundled outside the coil, because when the motor is blocked and forwarded heat, the overheating phenomenon spreads from inside and outside. If the protector is buried in the interior, the thermal switch temperature is slightly lower than the highest temperature of the enamelled wire; If it is tied outside the coil, consider the temperature difference between the inside and outside, and choose a lower temperature protector. 例如, the insulation level is F class enameled wire, coil inside and outside the temperature difference of 20℃, then choose 155-20=135℃ or so of the protector;

Motor protector has protection functions such as overload, 斷相, imbalance, underload, grounding/leakage, and stall. It can form a motor control protection unit with electrical components such as contactors and motor starters. It has functions such as remote automatic control, on-site direct control, panel indication, signal alarm, and field bus communication.

3. Selection of the thermal switch life
Different motor lock-in test time different requirements for the life of the protector are not the same, such as normal household motor lock-in 18 天, the number of cycles of normal action reset will not exceed 100000 次, the rated voltage current life of more than 100000 times can be selected protector; Some pump motors only do 3 days of blocking, 原則, the life requirement is hundreds of times.

4. Selection of the thermal switch for sealing performance
Motor coil in the thermal switch process will dip paint to enhance the insulation performance of the process, dip paint is divided into drop paint, immersion, vacuum into the paint and other processes, especially the vacuum into the paint pressure is large, insulating paint is easy to enter the inside of the protector, resulting in the failure of the protector. The ST01 series of An Electronics has a very high sealing, under the condition of -0.08國會議員, the paint dipping rate can reach 3%; In the case of -0.03國會議員, the paint rate can reach less than one in ten thousand.

Motor protector parameters

Bimetal motor protector