Manual Reset Thermostat(Safety limiter) Custom
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WHD-A (20A) Manual Reset Temperature Switch Thermostat

The WHD-A (20A) manual reset temperature switch thermostat is a crucial device for temperature control. Designed for accurate temperature regulation, it has a rated current of 20A. It functions by monitoring the temperature and interrupting the electrical circuit when the preset temperature is exceeded. To restart the device, a manual reset is required, ensuring that the device can only be reset after the temperature has returned to a safe level and the user has consciously decided to restart it. It is commonly used in various heating systems and industrial equipment to prevent overheating and protect the equipment from temperature-related damage.

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  • Parameter
  • Diagram
  • Knob
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Temperature range -35-35°C (any temperature range)
Bubble diameter 6mm
Bubble length Dependent on temperature
Maxum ambient operating temperature T150
Capillary length 1500mm
On/off temperature difference 3-5°C
Main applications For fresh-keeping cabinets, cold storage, ice makers, cold drink dispensers, etc.
Rated current 20A
Rated voltage 250V
About Us
Wenzhou Leheng Technology Co., Ltd.
Wenzhou Leheng Technology Co., Ltd.

Wenzhou Leheng Technology Co., Ltd. established in 2012 is a reputable enterprise specializing in product development, manufacturing, and international sales. We professionally produce thermostats, limiters, rocker switches, and PCB thermostats.

Our company has obtained certifications such as UL, TUV, CE, CQC, KC, RoHS, REACH, SGS, ISO 9001, and ISO 14001, along with multiple patents. We have participated in drafting and formulating national industry standards and have been repeatedly recognized as an innovative enterprise and a trustworthy contract-abiding company. In 2020, we were certified as a National High-Tech Enterprise.

Adopting an advanced systematic management model, we prioritize customer interests and maintain a highly capable team with skilled technical professionals. Upholding a people-oriented development philosophy, we strive to create a bright and comfortable working environment for our employees.

As one of the companies in China's thermostat industry with a notable number of automated equipment, we differentiate ourselves by utilizing optical inspection instruments for testing. Our standardized assembly lines and self-designed fully automated production equipment enable intelligent industrial control, ensuring end-to-end automation in assembly and testing. Strict quality control is implemented from the source components. Currently, our monthly production exceeds 1 million units, with an annual output surpassing 12 million+ units.

Our products are distributed across all domestic regions and exported to over 80 countries worldwide, including the United States, Turkey, Australia, India, Russia, Iran, Germany, Brazil, Mexico, South Africa, and Egypt. Thanks to our reliable products, professional sales service, and competitive pricing, we have earned widespread recognition from customers globally.

We sincerely look forward to cooperation with you to establish a long-term, stable partnership for mutual success.

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