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Table 1 Application example of the product (ordinary application example)
Surge absorber placed between lines
DC
Single-phase AC
Current fuse
L
N
Three-phase AC
Current fuse
Power supply
ZNR
voltage
[AC]
100 V
120 V
ZNR 1
ZNR 3
200 V
to 220 V
240 V
Processing conditions
■ Do not apply vibration, impact (drop impact, etc.), or pressure strong enough to crack the outer sheath resin or absorber
body of the surge absorber.
■ When coating the surge absorber with a resin or embedding it in a resin mold, avoid using a resin that degrades the
surge absorber.
■ Do not bend the surge absorber or apply force thereto close to the insulation cover of the lead terminal.
■ Make the wire as short and straight as possible.
Mounting and storage conditions
■ Do not melt solder or the insulation material making up the surge absorber when soldering the lead terminal.
■ Do not keep the product in a high-temperature or high-humidity condition. Keep the surge absorber in a room with
a temperature of 40 ℃ or lower and a relative humidity of 75% or lower and use the surge absorber within two years of
storage.
■ Keep the surge absorber in a place where no corrosive gas atmosphere (hydrogen sulfide, sulfurous acid, chlorine,
ammonia, etc.) is present.
■ Keep the surge absorber in a place where the surge absorber is protected from direct sunlight, dew concentration, etc.
ZNR1
Protected
device
ZNR3 ZNR3
Protected
device
ZNR3
Part number
E, CK, SC-type
201 to 361*
241 to 431*
ERZC□□EK
ERZC□□CK
ERZVS34C
471 to 621*
511, 621*
Matters to Be Observed When Using This Product
Surge absorber placed between a line and the ground
DC
Single-phase AC
Current fuse
ZNR1
L
N
ZNR2
Thermal
coupling
Three-phase AC
Current fuse
ZNR3
ZNR3
ZNR4
Thermal
coupling
Power supply
ZNR
voltage
[AC]
100V
to 220 V
ERZC□□EK
ZNR 2
ERZC□□CK
ZNR 4
ERZVS34C
240 V
* To find out about surge absorbers that can be used in an AC withstand voltage test,
please contact us.
Protected
device
Temperature
fuse
Protected
device
Temperature
fuse
Part number
E, CK, SC-type
471
511
821 or higher**
511
821 or higher**
30-Jun-23
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