Eaton 400mA Fast Acting Glass Cartridge Fuse, 5 x 20 mm, 250V AC S500-400-R

Eaton S500-400-R fast-acting glass cartridge fuse offers highly reliable overcurrent protection for sensitive industrial and electronic systems operating up to 250V AC. This Cartridge Fuse, measuring 5 x 20 mm with a 5 mm diameter body and 20 mm overall length, is designed for insertion into standard fuse holders commonly used across industrial automation, instrumentation, and control electronics.

The fast-acting F-speed fuse element delivers rapid fault isolation, reducing energy transfer during fault conditions and protecting downstream components effectively. Its glass body design enables quick and easy visual verification of continuity without disassembly, supporting maintenance and safety checks.

With an operating temperature range from -40°C to +125°C, the S500-400-R is well suited to withstand demanding environments including industrial panels with temperature fluctuations. Rated at 400mA, it precisely protects sensitive circuits such as sensors, test equipment, and small motors from overcurrent and short circuit damage.

The fuse carries multiple recognized international approvals including BSI, VDE, CSA, IMQ, SEMKO, and CCC, ensuring compliance with safety and quality standards for use in global markets. Its robust construction and compatibility with widely used 5 x 20 mm fuse clips make it an excellent choice for reliable protective solutions in automation panels, power distribution modules, and industrial electronic setups.

Typical applications include fast fault isolation in control circuits, protection of small motors and drives, shielding instrumentation and test devices, and use in industrial power supplies. The fast-acting characteristic enhances safety by quickly clearing transient and fault currents to minimize equipment damage.

Fast-acting F-speed characteristic minimizes fault energy transfer. Rated for 400mA current to safeguard sensitive electronics. Glass tube body enables visual continuity inspection. Wide operating temperature range from -40°C to 125°C.

Compact 5 x 20 mm cartridge format fits standard holders. Certified by multiple safety standards globally. Ideal for industrial automation, instrumentation, and control electronics. Effective protection against short circuits and overcurrent faults.

Explore the Circuit Breakers & Fuse category on EnvMart for more Eaton products and related electrical protection devices.