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■ Current fuse
(1) Select a surge absorber and the rated current for a current fuse to be used in a manner shown in the following table.
Confirm that no secondary accident arises when the surge absorber in an actual circuit breaks. Selected rated currents
of current fuses shown in the following table are exemplary one and may vary depending on circuit conditions used.
Confirm the rated current by a test, etc., before using the current fuse.
<Rated currents of current fuses for the D-type / V series surge absorber>
Standard
ERZV05D□□□ ERZV07D□□□ ERZV09D□□□ ERZV10D□□□ ERZV14D□□□
product number
Rating
3 A max.
current
* Use the rated voltage of the current fuse that corresponds to the circuit voltage of a circuit including the current fuse.
<Rated current of a current fuse for the SMD-type / VF series surge absorber>
Standard
product number
Rating current
* Use the rated voltage of the current fuse that corresponds to the circuit voltage of a circuit including the current fuse.
* For the HF series surge absorber, select the rated current of the fuse after confirming the way the fuse handles a load dump
surge and the protective coordination action it makes when the surge absorber is destroyed.
(2) Recommended parts where fuses are connected are shown in Table 1. When a load current to a protected device is so
large as to exceed the rated current of the fuse, however, connect the fuse in a location shown in the following diagram.
■ Temperature fuse
When connecting the surge absorber to a temperature fuse, choose a connection method and a temperature fuse that allow
fine thermal coupling between the surge absorber and the temperature fuse.
5 A max.
ERZVF□M□□□
5 A max.
Power supply
Matters to Be Observed When Using This Product
7 A max.
7 A max.
Current fuse
ZNR
ERZV20D□□□
10 A max.
Protected
device
10 A max.
30-Jun-23
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