Model & package intelligence
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RUILON RLVR240-055 RLVR240
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- RUILON RLVR240-055
- Type
- THT, P=5.1MM
- Minimum package
- 500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- RUILON
- Electronic Component
- RLVR240-055
- Electronic Component
- 1
- Package
- Through-hole, P=5.1mm
- Electronic Component
- Resettable Fuse
- Electronic Component
- 1.3g
- Electronic Component
- 15mm
- Electronic Component
- 1
- Electronic Component
- 26s
- Electronic Component
- BM0231046597
- Operating Temperature
- 40℃~+85℃
- Voltage Rating(Vmax)
- 240V
- Power(Pd)
- 3.5W
- Current(Imax)
- 5A
- Electronic Component
- Electronic Component
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
RLVR240-055 自恢复保险丝（PTC）产品概述
一、产品概述
RLVR240-055 是 RUILON（瑞隆源）出品的一款插件式自恢复保险丝（PTC），封装尺寸约为 14×4.1 mm，整体长度 15 mm，直插引脚间距 P=5.1 mm。器件在正常工作时呈低阻状态，可在过流或过热时迅速升温、阻值增加以限制电流，故障解除并冷却后自动恢复导通，适用于多类电子设备的过流保护与短路限制。
二、主要电气参数
- 额定耐压（Vmax）：240 V
- 最大通过电流（Imax）：5 A
- 保持电流（Ihold）：550 mA（不动作条件下允许持续电流）
- 跳闸电流（Itrip）：1.25 A（在标准条件下器件进入高阻态的典型触发电流）
- 功率耗散（Pd）：3.5 W（器件升温并限制电流时的耗散能力）
- 初始态阻值（Rmin）：450 mΩ（冷态低阻值）
- 跳断后最大阻值（R1max）：1.1 Ω（动作后的高阻态上限）
- 动作时间：26 s（从过流到进入高阻态的参考时间）
- 工作温度范围：-40 ℃ ~ +85 ℃
三、工作原理与特性
该类PTC基于聚合物正温度系数材料，电流通过时产生热量，温度升高致使内阻急剧上升，从而限制继续上升的电流。器件能够在故障解除后自动冷却恢复初始阻值，无需更换，适合重复短时过流保护。其低初始电阻有利于允许设备启动时的冲击电流（inrush），同时在超过 Itrip 时提供有效限制。
四、典型应用场景
- 开关电源、适配器的二次侧过流保护
- 电池供电设备与充电器的短路保护
- 家用电器、灯具与白色家电的线路保护
- 通信设备与工业控制模块的输入保护
五、安装与使用注意事项
- 推荐采用直插安装，焊接时避免长时间高温作用于本体，波峰焊/手工焊接温度和时间应控制在元件耐受范围内。
- 保持周围通风并避免靠近高温热源，环境温度接近上限时可能降低 Ihold/Itrip 性能。
- 设计时预留足够的爬电/气隙并考虑器件动作时的能量耗散与散热。
- 若应用在高严格的安全规范场景，请确认是否需通过相应认证（如 UL）或选择满足目标认证的型号。
六、常见故障判定与维护
- 经常跳闸：检查是否存在持续过流、短路或外部负载异常；测量环境温度是否过高。
- 无恢复或外观异常（鼓胀、裂纹）：建议更换元件，可能已超过材料极限或遭受过热破坏。
- 测量阻值：冷态应接近 Rmin，动作态阻值升高接近或不超过 R1max。
七、选型与采购建议
选型时以实际工作电流、允许冲击电流、最大工作电压及环境温度为准；在边界工况建议采用留余量（选择 Ihold 明显高于正常工作电流、Itrip 高于最大允许负载电流但低于可能损坏电路的电流）。采购时确认规格表、测试条件与批次一致性，并与供应商核实长期可靠性测试与认证情况。
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