定制的电机热保护器 (恒温开关)

The motor thermal protector is a protective device that automatically cuts off the circuit through temperature or current changes. The core function is to prevent the motor from being damaged by overheating, 过载或失速. 以下是重点:

Car wiper motor overload and overheat protector 6AP

17AM电动机热保护器通常闭合NC恒温器传感器Klixon 17AM022

小型电动机的热超载保护器选项 & 变速器

⚙️ 1. 核心工作原理
‌双金属片结构‌: It is composed of two metal strips with different thermal expansion coefficients. 当温度升高时, 由于膨胀差异，金属条弯曲变形, 触发机械连杆切断电路; 温度下降后自动复位并恢复导通.
‌Current-temperature dual response‌: 部分型号 (例如三相热保护器) 同时监测电流过载和绕组温度. 超载时, the circuit is quickly cut off within 4-10 seconds to avoid stall damage.

它是如何运作的:
过热检测:
热保护电机通常使用温度传感器, such as PTC thermistors or KTY sensors, 嵌入电机绕组内. These sensors monitor the temperature of the motor and send signals to a thermal protection device.

断电:
When the motor’s temperature rises beyond the safe limit, 热保护装置, 它可以是双金属开关或类似的机构, 断开电源, 关闭电机.

自动重启:
电机冷却后, 热保护装置通常会重置, 允许手动或自动重新启动电机.

好处:
防止损坏:
热保护有助于防止过热, which can lead to damage to the motor’s insulation, 绕组, 和其他组件.
延长寿命:
通过防止过热, thermal protection contributes to a longer lifespan for the motor.
安全:
它最大限度地减少了电机过热引起的火灾或其他危险的风险.

🔍 2. 主要类型及技术演进

类型	‌工作原理	‌特征	适用场景
双金属热保护器	温度触发金属板材弯曲	结构简单, 低成本, 自动复位, 但精度受材料配比影响	家用电器电机, 小型工业电机
电子保护器	芯片检测电流/温度信号	高精度, 可编程保护曲线, 支持远程监控, 但需要配套的控制器	智能工业装备, 精密电机
三相热保护器	Comprehensive current overload and overheating protection	支持0.55kW-75kW电机, 对污染环境的抵抗力强, 可以替代传统的 “热继电器 + 接触器” 解决方案	工业电机, 潜水泵

笔记: 天银机电专利技术通过优化双金属片组合结构，显着提高响应可靠性 (如添加过流保护元件).

Electric Motor Thermal Protection with IP54 IP55 ± 5o C Temperature Tolerance – 热敏开关,

6AP/3MP High Quality Electric Thermal Overload Protector for Blender Motor

5AP/2MP 50℃-180℃过流, 电机过热热保护器

📌 3. 主要选型参数

参数	‌要求	‌根据
动作温度	40℃–170℃ (根据电机绝缘等级定制)	Need to match the motor winding temperature limit
额定电流	2A-20A (根据电机功率选择)	防止误触发或保护失效
复位模式	自动重置/手动重置	Automatic reset is suitable for refrigerators and fans; 手动重置用于高风险场景
认证标准	TS16949、UL、CE（EN 60730-2-2）	Mandatory safety and environmental protection requirements

⚠️ 4. 使用注意事项
‌安装规范‌:
The lead bending must be more than 6mm away from the root to avoid damage and poor contact;
高温焊接后, 它必须冷却超过 30 seconds to prevent the protector from being damaged by heat.
环境适应性‌:
避免使用非密封保护器 (例如传统接触器) 在高度污染的环境中;
Regularly check the fatigue and aging of bimetallic strips and replace them in combination with the equipment maintenance cycle.
‌功能冲突避免‌:
Automotive motors with anti-pinch function need to adopt software temperature control solutions to avoid hardware protectors interfering with obstacle detection.

♻️ 5. 故障排除
Common reasons why the motor burns but the protector does not operate:
‌接线错误‌: The protector is not connected in series in the main circuit of the motor;
‌设定值太高‌: The action temperature or current threshold setting exceeds the motor tolerance range;
‌响应延迟‌: The bimetal strip requires heat accumulation time and cannot cope with instantaneous short-circuit faults.
It is recommended to give priority to products that have passed the short-circuit test (条款 18.101) GB/T中规定 14536.3-2022 standard to ensure reliability under extreme working conditions.