Semiconductor Fuse Overview
The DNR18-J1M fuse link is a medium-power fast-acting protection device for semiconductor equipment. Part of the DNR series, it supports a voltage of AC 690V / DC 500V and current ratings from 10A to 100A. Designed for demanding applications, this fuse link offers short-circuit and backup protection for industrial drives, inverters, UPS systems, EV power electronics and battery packs. Its ceramic construction with UL94 V-0 flame-retardant sand core ensures reliable performance under harsh conditions and meets international safety standards.
Semiconductor Fuse Features
Semiconductor Fuse FAQs
1、What does a fuse link do?
A fuse link protects circuits by physically breaking the connection during overcurrent, shielding downstream components. The DNR18-J1M melts its element under fault conditions, offering short-circuit and backup protection to prevent damage in converters and drives.
2、How do you choose the right fuse link?
Pick a fuse based on system voltage (AC/DC) and continuous current. The fuse rating should slightly exceed normal operating current while its interrupt rating handles possible fault currents. Consider environmental factors (temperature, ventilation) and ensure the fuse is sized correctly. Also verify that the fuse meets required standards and certifications for your market.
3、Is there a difference between AC and DC fuses?
Yes. A DC fuse must clear a continuous current without zero-crossing, so DC-rated fuses often have higher voltage ratings. The DNR18-J1M example (AC690V/DC500V) highlights this. Always use a fuse specifically rated for the type of current (AC or DC) in your application.
