Principle of Resettable Current Fuses

时间： 2024-10-31 来源：XC Official Website

技术问答

选型帮助

研发客服

商务客服

Resettable current fuses offer a unique solution for protecting electrical circuits while providing the convenience of being reusable. Here's how they work.

Resettable current fuses typically use a polymer-based material that changes its electrical resistance in response to an increase in current. When the current exceeds a certain threshold, the polymer material heats up and changes its state, increasing its resistance and limiting the current flow.

Once the overcurrent condition is removed, the polymer material cools down and returns to its original low resistance state, allowing the circuit to resume normal operation. This resettable feature makes these fuses highly convenient as they do not need to be replaced like traditional fuses after each overcurrent event.

The principle of operation of resettable current fuses is based on a combination of thermal and electrical properties of the polymer material. The material is designed to have a specific temperature coefficient of resistance, which determines how its resistance changes with temperature.

Resettable current fuses often have a defined trip current and hold current. The trip current is the level of current at which the fuse will activate and limit the current flow. The hold current is the maximum current that the fuse can handle without activating.

In some cases, resettable current fuses may also incorporate additional features such as overvoltage protection or reverse polarity protection to provide more comprehensive circuit protection.

resettable current fuses operate on a unique principle that combines thermal and electrical properties to provide protection for electrical circuits. Their reusable nature and convenience make them a popular choice in many applications.

发送到邮箱 |
+1 赞 0
收藏
评论 0
| 转发至：

本文由Natalia转载自XC Official Website，原文标题为:Principle of Resettable Current Fuses，本站所有转载文章系出于传递更多信息之目的，且明确注明来源，不希望被转载的媒体或个人可与我们联系，我们将立即进行删除处理。

全部评论（0）

暂无评论

What Is The Difference between Resettable Fuses and Traditional Fuses?

PPTC and fuses both do the same job: protecting electronic circuits from overcurrent related issues. The difference is that the fuse must be replaced after tripping, while PPTC can reset itself. PPTC can handle sudden overcurrent events without the need for replacement.

技术探讨发布时间 : 2024-09-04

【技术】一文带你正确认识保险丝的熔断特性及熔化热能值

文章由旭程电子带各位工程师正确认识保险丝的熔断特性及熔化热能值。熔断特性即电流保险丝所加负载电流与保险丝熔断时间的关系，熔化热能值(I2T)是指使保险丝的熔断体熔化，部份汽化的切断电流所需要的公称能量值，简单说就是使保险丝熔断所需的最小热能值。

技术探讨发布时间 : 2021-11-05

Is the Fuse Lead or Tin

The material of fuses is usually not simply lead or tin, but alloys of various components such as lead tin alloys.

技术探讨发布时间 : 2024-09-20

【经验】一文带你了解保险丝的熔断时间

保险丝的熔断时间能比较直观的反应保险丝保护性能的好坏，它是保险丝的一个重要参数，实际的熔断时间分为预飞弧时间和飞弧时间，在数据上用I-t曲线和I-t表格来体现，也叫熔断特性或安秒特性，本文旭程带你解析保险丝的熔断时间。

设计经验发布时间 : 2021-12-21

The Installation Precautions for Current Fuses

The installation of current fuses is crucial for ensuring the safety and proper functioning of electrical circuits. Here are some important installation precautions to keep in mind.

设计经验发布时间 : 2024-11-04

旭程保险丝选型表

提供旭程保险丝选型，操作温度-40℃至+125℃，额定电流涵盖250mA-20A，额定电压250VAC或63VDC。产品均符合RoHS、REACH法规要求，尺寸规格涵盖广。

产品型号

品类

Current Rating（额定电流:mA/A）

Voltage Rating（额定电压:VAC）

Interrupting Rating（断续额定:A）

应用等级（工业级/商业级/汽车级/军工级/航空航天级）

选型表 - 旭程立即选型

旭程（XC）温控器选型指南

目录- 公司介绍 Company Profile 温控器 Thermostat 保险丝 Fuses 企业资质与专利 Qualification and Patents Certifications

型号- C0015302Z,9K7.SK-B5,KSD305系列,9K7.SK-B3,CG-B,CG-A,SK-B1系列,9K7CG-XXX,SK-B5系列,KSD301系列,KSD307B,SK-A1,KSD307 SERIES,SK-A4,C0015301Z,9K7.SK-C2,SK-C2系列,C0025302Z,C4000302Z,KT SERIES,9K7.JW-A072,C2000302Z,CG-B系列,C0080303Z,9K7.SK-B11,JW-C系列,KSD305B,JW,KSD305-XXXX/XXXX,SK-C2,9K7SK-XXXX/XXXXX,C4000301Z,C5000301Z,SK,CG SERIES,9K4307-XXXX/XXXX,C0020302Z,CG,KT,KSD9700 SERIES,SK-B1,C5000302Z,C1000302Z,C0050303Z,SK-B5,C0035302Z,C0020303Z,C0040302Z,KSD307系列,KSD301-XXX/XXXXXX/XXX,9K7KT-XXXX/XXXXX,9K7.SK-F3,SK-F5系列,JW-B系列,C0060303Z,KSD9700,C0030301Z,KT系列,C7500301Z,C0070303Z,C0040303Z,SK-A1系列,9K9.9700-XXXXXXX,KSD305,KSD307,KT-A2,KT-A1,KSD301,C0030302Z,JW SERIES,JW系列,C0020301Z,C7500302Z,C0010302Z,9K4.307B,JW-A系列,CG-A1,C0025301Z,CG系列,KSD9700系列,C3000301Z,C2000301Z,C0030303Z,KT-A系列,SK SERIES,JW-B,JW-C,SK系列,KSD301 SERIES,KSD305 SERIES,CG-B2,C0010301Z,SK-F5,C3000302Z,SK-F6,9K7JW-XXXX,CG-A系列,KSD307-XXXX/XXXX,KT-A,9K4.307

选型指南 - 旭程 - 2014/11/25 PDF 中英文下载

旭程电子于1996年成立，致力于保险管和温控器的研发生产。拥有63项处于世界领先水平的专利，国内保险丝行业仅两家VDE认可的实验室之一，所有产品均符合RoHS和REACH等法规要求。获得的ISO 9001，IATF16949，ISO14001认证要求，十亿产品的年产值，销售范围覆盖全球，与三星、美的、创维、格力、格兰仕、长虹、海信、汇川、易事特等知名客户具有长期稳定合作。

玻璃保险管分立元件保险丝微型保险丝管式保险丝贴片保险丝汽车保险丝陶瓷管高分断保险丝玻璃管低分断保险丝陶瓷管低分断保险丝集成电路器件温控器

授权代理商 - 深圳市世强元件网络有限公司线上商城技术资料

展开

旭程（XC）保险丝选型指南

目录- Company Profile Fuse User's Manual Fuse Auto Fuse Fuse Holder Thermostat

型号- 06F,3S,C0015302Z,C0040302Z,3T,10C,06T,C0060303Z,4F,KSD9700,C0030301Z,6CH,C7500301Z,4T,C0015301Z,C0070303Z,4TE,C0040303Z,8TE,C0025302Z,5C,KSD305,5F,5G,C4000302Z,5H,9L,KSD301,C2000302Z,C0030302Z,10FV,C0020301Z,5S,C7500302Z,5T,C0010302Z,24F,12F,32F,C0080303Z,5SH,6B,6C,C0025301Z,6F,6G,24T,6H,12T,C3000301Z,C4000301Z,C5000301Z,2F,C2000301Z,C0030303Z,32T,R3-13,5GH,R3-12,R3-11,5CH,6S,C0020302Z,6T,2T,5TE,XC-1,BS1362,C0010301Z,C3000302Z,5TR,3F,3G,C5000302Z,C1000302Z,XC-2,C0050303Z,C0035302Z,C0020303Z

选型指南 - 旭程 - Ver.1.0 - 2022/2/16 PDF 英文下载

Fuse Material Has A Decisive Impact on Its Performance

Fuses are generally made of silver copper alloy with high resistivity and low melting point. This alloy has good conductivity and melting characteristics, which can quickly melt when the current is too high, thus protecting the circuit. Early fuses were often made of lead antimony alloy, but due to safety reasons, this material has been phased out.

技术探讨发布时间 : 2024-08-23