8

Gas Discharge Tubes

335

www .littelfuse .com

LITTELFUSE 3 TERMINAL POTTED ARRESTERS, 18A, 18B,

CONFORMS TO BT SPECIFICATION D2982B TOTALLY

NON-RADIOACTIVE, UL RECOGNIZED

(1) Measured using a rate of rise of voltage of 100V/s.

(2) Measured using a rate of rise of voltage of 1KV/µsec.

(3) Measured at 1 sec duration, 5 shots @ 3 min intervals, 50Hz.

(4) Measured using 8/20µsec, 5 shots each polarity.

(5) Measured at ±170V dc (18A) or ±350V dc (18B).

(6) Measured at 1 MHz, Line to ground.

(7) Measured using BT test circuit.

ORDERING

INFORMATION

PROTECTOR 18A

PROTECTOR 18B

All dimensions in mm

Features

• Conforms to BT specifications D2982B

• Hermetically sealed eclosure for use in underground

joints and pole tops.

• Flying leads for easy connection to IDC or screw

terminals.

• High surge capability

• Conforms to BT specification D2982B

• Flame retardent materials to UL 94V0

18A/18B Series Potted Gas Plasma Arresters

Modified Protector

3 ELECTRODE GDT

a=TIP

b=RING

e=GROUND

(centre electrode)

GRAPHICAL SYMBOL

a

b

e

Max

Alternating

Impulse

Electrical

DC

Impulse

Discharge

Discharge

Insulation

Max

(V)

(V)

(A)

(kA)

(

Ω)

(pF)

(V)

18A

210-310

800

5

5

30

100

18B

400-500

1000

5

5

30

100

®