G8 微型温度保险丝

  G8 系列 MICROTEMP® 热熔断器专为大电流应用而设计，例如大型电器和高功率电热包，其额定工作电流在 250VAC 时高达 25 安培（在 277VAC 时为 20 安培）。它比机电双金属型一次性设备更经济，可用于其小尺寸在安装（与 G4、G5 和 G6 系列热熔断器的物理尺寸相同）和热响应方面具有优势的应用中。Upper Limit Temperature Protection MICROTEMP®, the original thermal fuse from Therm-O-Disc, was developed in 1965 for jet fuel pumps and is now widely used in heating, appliances, and automotive applications. Therm-O-Disc offers the broadest combination of globally certified temperatures and electrical loads, as well as the broadest range of packages, mountings and design configurations on the market today. MICROTEMP Features: • Globally certified temperatures and electrical loads • One-shot operation cuts off electrical power • Current interruption capacity up to 25 amps @ 250VAC • Low resistance • Compact size • RoHS compliant Operating Principle The active trigger mechanism of the thermal fuse is an exclusively formulated, electrically nonconductive pellet. Under normal operating temperatures, the solid pellet holds spring loaded contacts closed. When a predetermined temperature is reached, the pellet melts, allowing the compression spring to relax. The trip spring then slides the contact away from the lead and the circuit is opened. After the thermal fuse opens a circuit, the fuse needs to be replaced. This replacement procedure must include correction of the fault condition before the product is operated again. G4 G5 Z6 G6 G7 G8 S9 Typical Resistive Rating at 250VAC 10A 20A 16A Higher Tm Than G6 16A More Temperature Ratings Than Z6 5A 25A 15A Details found on page 3 5 7 See pages 14-15 Application Notes - Page 16 Mountings & Configurations - Page 9 NOTE: The terms thermal fuse, thermal cutoff, thermal link, and TCO are synonymous and may be used interchangeably throughout the catalog.