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OTOWA Class (Type2) SPD LS-NC

[Fixing]

Installing the fixing base

Connection

Fix detent

Push into

After positioning the fixingbase on DIN rail, pull theslider of the fixing base andpush the fixing base into DINrail. Release the slider, lockingthe fixing base on to the rail.

Fix the detent to DINrail and push into sliderside of fixing base

Deterioration contact terminal

Protection of monitoring device

Installation example is shown in above diagram. Ifmonitoring device is far from the SPDs, install the SPDadjacent to the monitoring device to protect it from thelightning surge that invades from signal line.

Regular maintenance

During the lightning season and after lightning strikes, maintain the SPD asfollows.Before maintenance, switch off the isolating switch for inspection (or EarthLeakage Current Breaker (ELCB) ) on the electric input side of the SPD.

Pass criteria for SPD

Replace the SPD main unit if the SPD is under follow condition.(If the fixing base has also changed color or shape, replace the fixing base.)

Appearance check

The plastic housing has changed color or shape.

Status indicator color.

After status indicator change red, the SPD cannot be reused.

Leakage current check

Earth Leakage Circuit Breaker (ELCB) has operated any times. (After replacing

SPD, confirm the ELCB has no operation.)

LS-NC2720S LS-

Replace the SPD main

Push

Push

remove

Visual indication status

Green = GoodRed = Replace

LS-NC2720SLS-NC4420S

LS-NC2720SLS-NC4420S

SPD main unit

Specifications of UL 1449 3rd edition