1. A surge excess of the specifies Maximum Peak Current may cause short circuit or mechanical damage.
The following measures are recommended.
1) Location of the over current protector (circuit breaker or current fuse ) shall be in the power line to
the circuit( Location A) or in series with Varistor ( Location B)
| Varistor Dia. | 5mm | 7mm | 10mm | 14mm | 20mm |
| Fuse rating | 1 to 2A | 2 to 3A | 3 to 5 A | 3 to 10 A | 5 to 15 A |
3) In case that Varistor is used in line to ground, the ground fault circuit interrupter shall be applied in
locate A or thermally coupled fuse shall be applied in location C.
4) Fuse mounted Type K or Type P are available for V1 and V2 applications.
5) Varistor shall not be used near the flamable materials.
2. When Varistor is molded at en-user, molding resin materials shall be carefully selected, otherwise
Varistor,s long term stability could degrade.
3. Varistor shall not be used near heat generating device and free from direct sunlight. Varistor shall
be used with in the specified Operating Temperature Range.
4. Varistor Shall be free from dust, metal powder, dew and sea wind. A protective box is recommended
to prevent the unit from those.