Surge arrester

B88069X6061B502

3-electrode arrester

EZ3-A250X

KB AB E / KB AB PM

Issue 02 / 2007-09-06

Please read Cautions and warnings and

Page 2 of 4

Important notes at the end of this document.

Features

Applications

Extremely small size

Fast response time

High current rating

Stable performance over life

Very low capacitance

High insulation resistance

RoHS-compatible

Branch exchange (MDF)

Line protection

Station protection

Electrical specifications

DC spark-over voltage

1) 2) 4)

250

± 20

V

%

Impulse spark-over voltage

4)

at 100 V/µs

- for 99 % of measured values

- typical values of distribution

at 1 kV/µs

- for 99 % of measured values

- typical values of distribution

< 600

< 450

< 750

< 600

V

V

V

V

Service life

10 operations

50 Hz, 1 s

5)

5

A

1 operation

50 Hz, 0.18 s

5)

5

A

8/20 µs

5)

5

kA

1 operation

10/350 µs

5)

1

kA

10/1000 µs

5)

200

A

4)

> 1

G

Ω

Capacitance at 1 MHz

4)

< 1.5

pF

DC holdover voltage

3)

< 150

ms

Transverse delay time

3)

< 0.2

µs

Arc voltage at 1 A

Glow to arc transition current

Glow voltage

~ 10

~ 1

~ 80

V

A

V

Weight

~ 0.8

g

Operation and storage temperature

-40 ... +90

°C

Climatic category (IEC 60068-1)

40/ 90/ 21

Marking, blue, negative

EZ 250 YY O

EZ

- Series

250

- Nominal voltage

YY

- Year of production

O

- Non radioactive