1/2-inch bimetal thermostat used in water heater/washing machine/clothes dryer

Model Number: KSD303-124

Products Description:

303 series thermostat is also called 1/2 inch thermostat can replace the United States Emerson (T.O.D) company's 36T products, the bimetal thermostat features small size, high sensitivity, accurate temperature control, and the maximum current up to 16 A. It can be applied to household appliances and equipment up to a maximum power of 3KW.

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Key Specifications/ Special Features:

Product Drawings

KSD303-124-tz.jpg


Working Principle

It is a kind of thermostat with bimetal as the temperature-sensitive component, when the appliance is working normally, the bimetal is in the free state, the contact is in the closed/disconnected state, when the temperature reaches the action temperature, the bimetal is heated by the internal stress and acts quickly to open/close the contact, cut off/connect the circuit, thus playing a role in bimetal thermostat. When the appliance cools down to the reset temperature, the contacts automatically close/open to restore normal operation. Several of these bimetal thermostats also have dual temperature protection, when the bimetal thermostat part of the failure to a certain temperature can not cut off the circuit, the temperature continues to rise to another set of temperature limit set temperature, start the secondary protection, cut off the circuit.


Application Areas:

(1) Electric appliances such as drinking fountains, electric kettles, sandwich toasters, dishwashers, dryers, clothes dryers, sterilizers, microwave ovens, electric coffee pots, electric cookers, refrigerators, air-conditioners, and overcookers.

(2)Office equipment

(3) Car seat heaters, car antifreezers


Services

  • Sample test: Because of the specialness of bimetal thermostats, we need to conduct matching installation test before an order is placed. Through such test, we can also make sure that the performance of our products, temperature and other parameters are qualified in line with customers’ requirements.
  • Special requirements: We can design molds according to customers’ drawings. If customers do not have drawings, but have samples, they need to send the samples to our engineers. We can measure the size and design the drawing, and then design the mold based on the drawing.
  • After-sales service: If the temperature of the product needs to be changed, please feel free to contact us and we will always be patient in serving you. Instead of engaging in one-off business, we are seeking long-term cooperation, from which we can achieve a win-win situation.
  • Payment: Currently we support T/T payment, and demand an advance deposit which is 30% to 50% of the total amount. The rest shall be paid off before delivery. As for other payment methods, it can be determined according to the sum of the order and the actual situation.


Product Parameters


Electrical parametersAC210V/380V  5A-16A (resistive load)
Product certificationUL,CUL
Action temperature range0-300 ℃ (optional), temperature accuracy: ± 2± 3 ± 5 ± 10 ℃
Reply and action temperature difference8-100℃ (optional)
WiringPlug terminal 250#(Bend 0~90°optional);Plug terminal 187#(Bend 0~90°optional, thickness 0.5, 0.8mm optional)
Service life≥ 100,000 times
Electrical strengthAC 50Hz 1800V over 1min, no flicker, no breakdown
Contact resistance≤ 50mΩ
Insulation resistance≥ 100MΩ
Contact formnormally closed type: temperature rise, contact disconnection, temperature drop, contact connection;
Normally open type: temperature rise, contact on, temperature drop, contact off


Installation:

Installation of normal moving rings, installation of small round moving rings, installation of flat moving rings, normal large aluminium caps with mounting holes, extended aluminium caps with mounting holes.


Attension:

(1) Grounding method: through the thermostat metal cover and equipment grounding metal parts connected.

(2)When contact temperature-sensitive installation is used, the metal cover surface should be made to be close to the installation surface of the controlled appliance. In order to ensure the temperature-sensitive effect, the temperature-sensitive surface should be coated with heat-conducting silicone grease or other heat-conducting medium with similar performance.

(3) The top of the cover surface should not be collapsed, loosened or deformed during installation so as not to affect the performance.

(4) The liquid must not be allowed to penetrate into the interior of the temperature controller, the shell must not be cracked, and the shape of the external terminals must not be changed at will.

(5)The product is used in the circuit of not more than 5A current, should choose the copper core cross-section of 0.5-1mm2 wire connection; not more than 10A current circuit, should choose the copper core cross-section of 0.75-1.5mm2 wire connection.

Connections.

(6) The products should be stored in a ventilated, clean, dry and non-corrosive gas warehouse with relative humidity less than 90% and ambient temperature below 40℃.


Packing Details

Inner packing:

Out packing:

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