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The working principle of KSD301 temperature controller
The KSD301 series of temperature controllers is a type of temperature controller that uses a bimetallic strip as the temperature-sensing component. When the electrical appliance is operating normally, the bimetallic strip is in a free state, and the contacts are in a closed/open state. When the temperature reaches the operating temperature, the bimetallic strip is heated and generates internal stress, causing it to act rapidly, opening/closing the contacts and cutting off/connecting the circuit, thereby achieving the temperature control effect. When the electrical appliance cools down to the reset temperature, the contacts automatically close/open, restoring the normal working state.
Application fields of KSD301 series temperature control switches
(1) Electric heating appliances such as water dispensers, electric kettles, sandwich toasters, dishwashers, dryers, disinfection cabinets, microwave ovens, electric coffee POTS, electric cookers, refrigerators, air conditioners, and glue applicators.
(2)Office equipment
(3)Car seat heaters, car antifreeze devices
KSD301Technical parameters of series temperature controllers
Electrical parameters: 1) CQC, VDE, UL, CUL AC250V 50~60Hz 5A / 10A / 15A (Resistive load)
2UL AC125V 50Hz 15A (Resistive load)
(2)Operating temperature range: 0-300℃ (optional), temperature accuracy: ±2 ±3 ±5 ±10℃
(3)Temperature difference between response and action: 8-100℃ (optional)
(4)Wiring method: Insert terminal 250# (bending 0 to 90° is optional); Plug terminal 187# (Bending 0 to 90° is optional, thickness 0.5 and 0.8mm are available)
(5)Service life: ≥ 100,000 times
(6)Electrical strength: AC 50Hz 1800V for 1 minute, no flicker, no breakdown
(7)Contact resistanceΩ 50 m or less
(8)Insulation resistanceP 100 m Ω
(9)Contact form: Normally closed type: When the temperature rises, the contact opens; when the temperature drops, the contact closes.
Normally open type: When the temperature rises, the contacts are connected; when the temperature drops, the contacts are disconnected
(10)Enclosure protection grade: IP00
KSD301Installation methods for the series of thermal protectors: Install ordinary movable rings, install small round movable rings, install flat movable rings, install ordinary large aluminum covers with installation holes, and install extended aluminum covers with installation holes.
KSD301Competitive advantages of the series of thermostats
(1)Stable performance (2) High precision (3) small size and light weight (4) high reliability and long service life (5) minimal interference to radio waves (6) No arc
KSD301Precautions for Series Thermostats
(1)Grounding method: Connect the metal outer cover of the temperature controller to the grounding metal part of the equipment.
(2)When using contact temperature-sensing installation, the metal cover surface should be tightly attached to the installation surface of the controlled device. To ensure the temperature-sensing effect, thermal grease or other similar heat-conducting medium should be applied to the temperature-sensing surface.
(3)When installing, do not crush, loosen or deform the top of the cover surface to avoid affecting its performance.
(4)Do not allow liquid to seep into the interior of the temperature controller. Do not cause cracks in the casing. Do not change the shape of the external terminals at will.
(5)When the product is used in a circuit with a current not exceeding 5A, a copper core wire with a cross-sectional area of 0.5-1mm ² should be selected for connection. When used in circuits with a current not exceeding 10A, copper core wires with a cross-sectional area of 0.75- 1.5mm ² should be selected for connection.
(6)The product should be stored in a warehouse that is well-ventilated, clean, dry and free of corrosive gases, with a relative humidity of less than 90% and an ambient temperature below 40℃.
(7)Do not bend the terminal blocks during use; otherwise, it will affect the reliability of the electrical connection
Passed UL,VDE and CQC certifications
