Difference between fuse aR and gR

1. 1st letter

A local range protection (backup protection fuse)

G full range protection (general purpose fuse)

2. 2nd letter

G cable and conductor protection (general application)

M switch protection (motor circuit protection)

R semiconductor protection (as rectifier protection)

L cable and conductor protection (according to DIN VDE)

2、 1. Semiconductor protection within local scope of fuse AR (DIN vde/iec)

2. Fuse gr (DIN vde/iec) full range of semiconductor protection

3、 In addition, the "slow action" and "fast action" are also marked on the divided fuse, which are specified in iec/cee/din VDE (DIN is the code of German national standard, similar to the Chinese national standard number with the word "GB"; VDE is the world authoritative certification body, and they can issue their own safety standards, and the standards they issue are often adopted as German national standards. "VDE din" before the German standard means that this standard is a German national standard published by VDE. IEC is the International Electrotechnical Commission.

1. "Fast action" feature means that the breaking speed of the fuse under short-circuit conditions is faster than the working level gl/gg. The diazed fuse used in the DC railway power supply system has a "slow action" characteristic, which is especially suitable for breaking DC current with large inductance.

2. The fast action and slow action characteristics of the fuse are also applicable to the protection of cables and conductors. The full range fuse (gl/gg, GR, fast action and slow action) can safely and reliably disconnect the overload current and short-circuit current. Local range fuses can only be used as short circuit protection (am, AR).

3. Letter introduction:

gL (DIN VDE) /gg (IEC) full range of cable and conductor protection

aM (DIN vde/iec) local range motor circuit protection

aR (DIN vde/iec) local range semiconductor protection

gR (DIN vde/iec) full range of semiconductor protection

www.carfuseholder.com