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PCB mount fuse holder<\/strong> for 6.35×31.75mm tubular fuses is a high\u2011current board\u2011soldered circuit\u2011protection component for high\u2011power AC\u2011DC systems. This pcb fuse base adopts high\u2011performance PBT insulating housing and reliable H65 brass contact points, providing excellent insulation strength and stable high\u2011current carrying performance. Designed for direct PCB soldering assembly, it is widely used in power converters, battery energy\u2011storage equipment, industrial power modules and high\u2011power control PCB boards.<\/p>\n Different from panel\u2011mount fuse holders, this unit is designed for PCB onboard installation, saving cabinet space. Its 1000V DC & 50A rating makes it a preferred solution for new\u2011energy power\u2011conversion PCB circuits where high\u2011voltage DC and large\u2011current protection are required.<\/p>\n When selecting this PCB mount fuse holder for 6.35×31.75mm tubular fuses, confirm fuse dimension, system voltage type (AC\/DC), and continuous operating current first. Select matching\u2011rating tubular fuses and keep a 1.25\u20111.5\u00d7 safety margin against continuous\u2011load overheating. For high\u2011voltage DC PCB applications such as energy\u2011storage and power converters, verify the 1000V DC rating meets system requirements. Follow official PCB pad dimension drawing for layout design to guarantee soldering reliability and current\u2011carrying capacity. Prefer UL94\u202fV0 PBT\u2011housing parts for high\u2011temperature working environment on PCB boards.<\/p>\n 1. Select correct\u2011rating 6.35\u00d731.75\u202fmm tubular cartridge fuse according to circuit\u2011protection requirements.<\/p>\n 2. Design PCB pads strictly follow product dimension drawing to ensure good soldering and current\u2011carrying performance.<\/p>\n 3. Complete soldering process with proper temperature and time; avoid over\u2011heating which may damage plastic housing.<\/p>\n 4. Insert tubular fuse fully into holder to achieve reliable contact.<\/p>\n 5. Do not operate beyond published rated voltage\u2011current limits to avoid insulation breakdown and safety risks.<\/p>\n 6. Cut off full power supply and discharge circuit before fuse replacement to prevent electric shock hazard.<\/p>\n 7. Periodically check for loose fuse, contact oxidation or heating signs; replace components promptly if abnormality occurs.<\/p>\nCore Product Features<\/h2>\n
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Full Technical Specifications<\/h2>\n
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\n Specification Item<\/th>\n Parameter Value<\/th>\n<\/tr>\n \n Model<\/td>\n R3(67)B<\/td>\n<\/tr>\n \n Compatible Fuse<\/td>\n 6.35 \u00d7 31.75\u202fmm tubular cartridge fuse<\/td>\n<\/tr>\n \n Rated Current & Voltage (AC)<\/td>\n 50A @ 250V AC<\/td>\n<\/tr>\n \n Rated Current & Voltage (DC)<\/td>\n 50A @ 1000V DC<\/td>\n<\/tr>\n \n Housing Material<\/td>\n PBT, UL94 V\u20110 flame\u2011retardant<\/td>\n<\/tr>\n \n Contact Material<\/td>\n H65 brass<\/td>\n<\/tr>\n \n Insulation Resistance<\/td>\n \uff1e 100\u202fM\u03a9<\/td>\n<\/tr>\n \n Power Frequency Withstand Voltage<\/td>\n \uff1e 3000V AC<\/td>\n<\/tr>\n \n Mounting Method<\/td>\n PCB soldering mount<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Selection & Application Guidance<\/h2>\n
Typical Application Scenarios<\/h2>\n
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Installation & Maintenance Instructions<\/h2>\n