KSD301 Temperature Limit Switch

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:

我. 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.

二. Key Parameters

参数	‌Typical values	评论
额定电压/电流	交流250V / 5A、10A、15A、16A	Applicable to resistive loads
动作温度范围	40°C–250°C	5°C steps available
‌Temperature accuracy‌	±2℃、±3℃、±5℃、±10℃	取决于型号
Reset temperature difference	8–100℃ (可定制)	Action and reset temperature difference
接触电阻	≤50mΩ
‌Insulation resistance	≥100MΩ
‌Mechanical life	≥100,000次

KSD301 Temperature Limit Switch

KSD301 Temperature Switch

Dimensional parameters of KSD301 temperature switch

三、. Specifications and Types
‌Contact Form‌
‌Normal Closed (数控): The contact disconnects when the temperature rises (most commonly used).
‌Normal Open (不): The contact connects when the temperature rises.
‌Mounting Structure‌
Bent-leg/flat-angle terminals are optional (remarks are required when placing an order).
外壳保护水平: 防护等级00 (metal enclosure grounded).

四号. Typical Applications
‌Household appliances‌: 饮水机, 电饭锅, 消毒柜, 微波炉, 咖啡机.
‌Industrial equipment‌: 空调, 层压机, 电加热器具.
‌Automotive field‌: diesel filter heating system.

V. Procurement and selection
‌Temperature marking‌: The required operating temperature (such as 85°C, 125℃) 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温度开关参数