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.

第二. Key Parameters

Parameters	‌Typical values	Remarks
Rated voltage/current	AC 250V / 5一個、10一個、15一個、16一個	Applicable to resistive loads
Action temperature range	40°C–250°C	5°C steps available
‌Temperature accuracy‌	±2℃、±3°C、±5°C、±10°C	取決於型號
Reset temperature difference	8–100℃ (customizable)	Action and reset temperature difference
Contact電阻	≤50毫ω
‌Insulation resistance	≥100MΩ
‌Mechanical life	≥100,000次

KSD301 Temperature Limit Switch

KSD301 Temperature Switch

Dimensional parameters of KSD301 temperature switch

第三. Specifications and Types
‌Contact Form‌
‌Normal Closed (數控): The contact disconnects when the temperature rises (most commonly used).
‌Normal Open (唔係): The contact connects when the temperature rises.
‌Mounting Structure‌
Bent-leg/flat-angle terminals are optional (remarks are required when placing an order).
外殼保護級別: IP00防護等級 (metal enclosure grounded).

IV. Typical Applications
家用電器: 飲水機, 電飯煲, 消毒櫃, 微波爐, 咖啡機.
‌Industrial equipment‌: 空調, 層壓機, 電加熱器具.
‌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