KSD301 Temperature Limit Switch

KSD301 realizes temperature control through bimetallic temperature sensing element: When the temperature of the equipment reaches the preset action temperature, the bimetallic strip is deformed by heat and instantly drives the contact to disconnect the circuit; after the temperature drops to the reset temperature, the contact automatically closes and resumes power.

KSD301 is a widely used bimetallic temperature-controlled Limit switch, mainly used for overheat protection or temperature control of electrical equipment. Its main features and information are as follows:

I. Core Principle
KSD301 realizes temperature control through bimetallic temperature sensing element: When the temperature of the equipment reaches the preset action temperature, the bimetallic strip is deformed by heat and instantly drives the contact to disconnect the circuit; after the temperature drops to the reset temperature, the contact automatically closes and resumes power.

II. Key Parameters

Parameters
Typical values Remarks
Rated voltage/current CA 250 V / 5A、10A、15A、16A Applicable to resistive loads
Rango de temperatura de acción 40°C–250°C 5°C steps available
‌Temperature accuracy‌ ± 2 ℃、±3℃、±5℃、±10 ℃ Dependiendo del modelo
Reset temperature difference 8–100℃ (personalizable) Action and reset temperature difference
Resistencia de contacto ≤50mΩ
‌Insulation resistance ≥100MΩ
‌Mechanical life ≥100.000 veces

KSD301 Temperature Limit Switch

KSD301 Temperature Limit Switch

KSD301 Temperature Switch

KSD301 Temperature Switch

Dimensional parameters of KSD301 temperature switch

Dimensional parameters of KSD301 temperature switch

III. Specifications and Types
‌Contact Form‌
‌Normal Closed (CAROLINA DEL NORTE): The contact disconnects when the temperature rises (most commonly used).
‌Normal Open (NO): The contact connects when the temperature rises.
‌Mounting Structure‌
Bent-leg/flat-angle terminals are optional (remarks are required when placing an order).
Nivel de protección del gabinete: IP00 (metal enclosure grounded).

IV. Typical Applications
‌Household appliances‌: dispensadores de agua, ollas arroceras, gabinetes de desinfección, hornos microondas, máquinas de café.
‌Industrial equipment‌: acondicionadores de aire, laminadores, aparatos de calefacción eléctrica.
‌Automotive field‌: diesel filter heating system.

V. Procurement and selection
‌Temperature marking‌: The required operating temperature (such as 85°C, 125°C) and contact type must be specified when purchasing.

Tip‌: The operating temperature tolerance and reset temperature difference must be confirmed according to the specific model. The tolerance of some high-precision models is as low as ±2°C.

KSD301 Temperature Switch Parameters

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