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WHD-BA (30A/32A) Knob Thermostat

The WHD-BA is a Knob Thermostat with a capillary sensing bulb for cooking equipment. The sensing bulb detects temperature at the heating point, while the thermostat switches the heating circuit according to the temperature set by the rotary knob.

The WHD-BA is available in 30A and 32A versions, with the temperature range configured according to the appliance requirements. It is designed for deep fryers, soup kettles, fry pans, and other cooking equipment.

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* Current:30A 32A
* Temperature Range: any temperature range below 320℃
* Bulb Dia: 6mm
* Bulb Length: as different temperatures
* Max resistance temperature T125
* Length of Capillary: 300-2000mm
* On-off Temperature Difference: 2-12℃
* Application: Deep Fryers/Soup Kettles/Electric Fryers

Parameter Specification
Model WHD-BA
Type Knob Thermostat with Capillary Bulb
Rated Current 30A or 32A
Temperature Range Any range below 320°C, set per order
Setting Method Rotary Knob
On-Off Temperature Difference 2–12°C
Sensing Bulb Diameter 6 mm
Sensing Bulb Length Depends on temperature range ordered
Capillary Tube Length 300–2000 mm
Max. Withstand Temperature T125


WHD-BA Knob Thermostat Advantages
Adjustable Knob Setting

The rotary knob allows the operator to set the required working temperature directly on the thermostat.

Temperature Range by Order

The WHD-BA can be configured for any temperature range below 320°C. The sensing bulb length is matched to the ordered temperature range.

Flexible Current Selection

30A and 32A versions are available to match different heater load requirements. The selected version should correspond to the equipment's electrical specifications.

Flexible Capillary Length

Capillary tube lengths from 300 to 2000 mm allow the sensing bulb to reach the heating area while the thermostat body is positioned according to the equipment layout.

Mechanical Temperature Control

The Knob Thermostat uses a sensing bulb, capillary tube, and mechanical switching structure to regulate the heating circuit without a digital control interface.


WHD-BA Knob Thermostat Applications

The WHD-BA Knob Thermostat is used for:

Deep Fryers
Electric Fryers
Soup Kettles
Fry Pans
Other Cooking Equipment

The selected current rating and temperature range should match the heating load and operating requirements of the equipment.


WHD-BA Knob Thermostat Manufacturer and OEM Supplier

As a Knob Thermostat manufacturer and Factory, the supplier provides thermostats for cooking equipment manufacturers, appliance suppliers, distributors, and wholesale buyers.

Custom and OEM Service

Custom configurations can be discussed according to the required temperature range, sensing bulb length, capillary tube length, and current rating. OEM supply is available for fryer, soup kettle, fry pan, and other cooking equipment projects.

Factory Supply and Wholesale

Factory supply is available for equipment manufacturers, distributors, and Wholesale buyers. Product selection can be based on the heater load, working temperature, installation space, and required capillary length.


WHD-BA Knob Thermostat FAQ

What temperature range can be ordered for the Knob Thermostat?

Any temperature range below 320°C can be configured according to the appliance requirements. The working temperature should be provided when ordering so the appropriate sensing bulb configuration can be confirmed.

What is the difference between the 30A and 32A versions?

The main difference is the rated current. Select the version according to the heater's load current and supply voltage. These electrical details should be provided when requesting a quotation.

Can the WHD-BA replace an existing fryer thermostat?

It can be used as a replacement when the specifications and installation requirements match. Compare the existing thermostat's current rating, temperature range, bulb diameter, capillary length, and mounting arrangement with the WHD-BA.

What capillary tube lengths are available?

The WHD-BA supports capillary tube lengths from 300 to 2000 mm. The required length depends on the distance between the temperature sensing point and thermostat mounting position.

Can the sensing bulb length be customized?

Yes. The sensing bulb length depends on the ordered temperature range and can be configured according to the equipment requirements.

Is the Knob Thermostat suitable for OEM orders?

Yes. Custom and OEM configurations of the WHD-BA are available for cooking equipment manufacturers and appliance projects. The required current rating, temperature range, bulb configuration, and capillary length can be provided for product matching.

About Us
Wenzhou Leheng Technology Co., Ltd.

Company Advantages

Experienced Manufacturer:

Established in 2012, we specialize in the development and manufacturing of thermostats, temperature limiters, rocker switches, and PCB thermostats.

Automated Production:

Standardized production lines and self-developed automated equipment support efficient assembly, testing, and consistent manufacturing quality.

Stable Production Capacity:

With monthly production exceeding 1 million units and annual output exceeding 12 million units, we support stable supply for B2B orders.

Global Supply:

Our products are exported to more than 80 countries and regions, supported by professional sales and order service.

Certificate Of Honor

We maintain strict quality control and hold certifications including UL, TUV, CE, CQC, KC, RoHS, REACH, SGS, ISO 9001, and ISO 14001. We hold multiple patents, and have participated in the development of national industry standards.
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