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RL250-180是瑞隆源(RUILON) 推出的一款高压插件式自恢复保险丝,专为电子设备的过流/过温保护设计,可替代传统一次性保险丝,具备重复使用、低损耗、响应稳定等特点,适用于市电供电的中小功率电子设备。
该产品聚焦250V高压场景下的中小电流保护,核心功能是当电路出现过流(如短路、负载过载)时,快速限制故障电流,避免设备损坏或起火;故障排除后,无需更换元件即可自动恢复正常工作,有效降低维护成本与停机时间。
RL250-180的电气参数针对实际应用场景优化,核心参数及意义如下:
参数名称 规格值 实际应用说明 额定耐压(Vmax) 250V 可承受的最大交流/直流电压,完美适配国内市电(220V)设备 保持电流(Ihold) 180mA(25℃) 25℃环境下,持续通过且不动作的最大电流(电路正常工作电流需≤此值) 跳闸电流(Itrip) 500mA(25℃) 25℃环境下,保证动作的最小电流(过流≥此值时,3秒内跳断) 动作时间 3s(典型值) 过流达到跳闸电流时,从电流触发到阻值跳断的响应时间,满足多数设备保护需求 最大浪涌电流(Imax) 3A 单次浪涌不超过3A(超过可能导致元件永久损坏,需配合浪涌抑制元件使用) 最大消耗功率(Pd) 1W 正常工作时的最大功耗,低损耗不影响电路整体效率 初始最小阻值(Rmin) 800mΩ 常态下的低阻值,信号传输/功率损耗极小,不干扰电路正常功能 跳断后最大阻值(R1max) 9Ω 跳断后呈高阻态,有效限制故障电流至安全范围,避免二次损坏RL250-180采用正温度系数(PTC)聚合物复合材料,工作原理清晰且可靠:
可靠性方面,该产品动作时间稳定(3s典型值),跳断后阻值一致性好,耐浪涌能力满足多数应用需求,符合UL、VDE等主流安规认证要求(实际需参考官方最新认证文件)。
结合参数特性,RL250-180适用于以下高性价比场景:
RL250-180凭借高压适配、低损耗、可重复使用等优势,成为市电供电中小功率设备过流保护的高性价比选择,广泛应用于消费电子、家电等领域,满足量产与成本控制需求。
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