表面贴装热敏开关 & 双金属热保护器

表面贴装热敏开关的类型 & Bimetal Motor Thermal Protector
表面贴装热开关有多种类型 & 双金属保护器, 每个都适合不同的应用和电机类型:

双金属热保护器 (表面贴装): 它们使用加热时弯曲的双金属条, 触发开关断开电源. 它们通常用于小型电机和电器.

NTC / PTC Thermistor-Based Protectors: These use temperature-sensitive resistors (NTC / PTC thermistors) to monitor the motor’s temperature. They provide precise temperature sensing and are often used in more sophisticated applications.

Electronic Thermal Protectors: These use electronic circuits to monitor and control the motor’s temperature. They offer advanced features such as adjustable temperature sensor thresholds and remote monitoring capabilities.

10A~30A motor thermal protector Replacement UK OTTER circuit breaker

3MP 6AP+PTC过流 & 温度双金属保护器

Transformers thermal overload protection temperature switch

Surface Mount thermal protector are indispensable components in the safe and efficient operation of motors. 通过防止过热, they protect motors from damage, 延长其使用寿命, 减少火灾风险, 确保安全运行, 并最大限度地减少停机时间和维护成本. 此外, thermal protector switch help in complying with industry safety standards, 让运营商和利益相关者安心. 随着技术的进步, thermal protector switch continue to evolve, 为各种应用中的电机提供更精确、更可靠的保护.

随着科技的发展, 电机的应用范围越来越广泛, 尤其是电机在日常生活和生产中的使用也越来越重要. 但电机烧毁事故也时有发生, 在现实生活中, 电机烧毁主要是以下堵塞线圈过热造成的, 负载太大电机过载, 缺相等原因. Installing a bimetal heat protector switch is one of the effective ways to protect the motor. 热保护器, 也称为温度开关, 温控开关, 双金属温控器, ETC. 是一种以双金属片作为感温元件的温度开关, 当电器正常工作时, 双金属片处于自由状态, 触点处于断开状态, 当温度升至动作温度值时, 双金属元件受热产生内应力并快速动作, 打开联系方式, 切断/连接电路, so as to play a thermal protection role. Wait until the ambient temperature drops to thereset temperature of the bimetal protector, 触点将重新闭合所连接的电路, 电机将再次工作.

Choosing The Right Surface Mount Thermoswitch & Protector
How to choose the right thermal protector is very important, 否则不但不能起到保护作用, 但会因选型错误而导致电机无法工作, 甚至烧毁.
1. 电压 & 当前测定
• Motors have different voltage ranges 380V, 230V, 220V ,110V, DC motors will also have 36V/ 24V /12V, ETC。, according to different working voltages to choose different rated voltage thermal protectors, 原则, 实际应用电压小于或等于保护器额定电压, 例如, 380V motor cannot choose rated voltage 220V thermal protector, 额定电压220V保护器可用于110V电机;

• The current of the motor is divided into three kinds of starting current, 正常工作电流和阻断电流, the rated current of the thermoswitch & protector should be greater than the maximum value of the three currents, 并且需要留有余量. 例如, 电机正常工作电流1A, 启动电流1.5A, 阻断电流2A, then the rated current of the selected thermal protector is at least 2A, 额定电流最好选择3A或5A，保留余量. Some motor starting current is greater than the rated current of the thermal protector, 但启动时间较短, 正常工作电流和闭锁电流均小于保护器的额定电流, 在这种情况下, 你也可以选择这个保护器. 因为启动电流大于额定电流, 但由于时间短, the thermal effect of the current has not had time to make the Bimetal heat leading to protection of the thermal protector, 以免造成误操作.

Thermoswitch and Thermal Protectors Set-point Temperature
Thermoswitch and Thermal Protectors Specification Guide Thermoswitch and thermal protectors have a set point temperature that is either fixed or field adjustable. The set point is the rated temperature at which the device undergoes a change in state associated with movement of the electrical contacts. Fixed-point devices are rated at a given temperature while field-adjustable devices have a temperature range over which the set point can be adjusted.

Thermoswitch and Thermal Protectors Hysteresis:
Hysteresis, also referred to as the temperature differential, is a finite temperature range over which switching takes place. It is designed to prevent circuitry from constantly changing between states. A hysteresis of 0.5 C will typically actuate 0.5 degrees past the set-point temperature and not change state again until the temperature drops to 0.5C below the set-point temperature.

Thermoswitch and Thermal Protectors Maximum current:
The maximum current rating is the maximum electrical load in amperes that the contacts of the electrical switch is designed to carry.

Thermoswitch and Thermal Protectors Maximum voltage:
The Thermoswitch maximum voltage rating is the greatest potential difference that the device is designed to hold across open switch contacts without arcing or development of a current. The maximum voltage is specified for alternating-current (交流电) and direct-current (直流), with AC exhibiting a greater self-extinguishing tendency of an arc across an air gap and therefore able to hold a greater potential difference.

Internal structure of bimetal protection switch

motor Thermoswitch & 双金属热保护器

Custom Battery packs Bimetal Thermal Protector

产品描述

Bimetal Motor Thermal Protector Features

Small size and easy installation
Low resistance, <30mohm
Snap type,sensitive to current and temperature and action quickly
Endurance lfe more than 10000 周期
Prevention again leak of vacuum impregnation process
Double protection of over-curent & over-temperature
Gasketed case suitable for most impregnation processes
Current and temperature sensitivity for maximum design flexibility and application
Customzied leads
Substitute SENSATA 4MM/6MM, PEPI and ISUZU IP405/505 series

最大接触额定值

开放温度&重置温度

方面

应用领域

Battery packs
Shaded pole motor
AC motor and pump
Fluorescent lighting ballast
Transformers
Solenoid switch
Heating appliance
Portable power tool

CERTIFICATIONS

标准套餐
100每袋 件

运输期限:
出厂前, 直达, 顺铂, C&F, 离岸价格

运输方式:
国际快递, 乘飞机, 海运