Surge arrester

B88069X8840B252

3-electrode arrester

T23-A250X

KB AB E / KB AB PM

Issue 04 / 2007-10-18

Please read Cautions and warnings and

Page 2 of 4

Important notes at the end of this document.

Features

Applications

Standard size

Extremely fast response time

Very high current rating

Stable performance over life

Very low capacitance

High insulation resistance

RoHS-compatible

Line protection

Station protection

Base stations

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

< 500

< 400

< 600

< 550

V

V

V

V

Service life

10 operations

50 Hz; 1 s

5)

10

A

1 operation

50 Hz; 0.18 s (9 cycles)

5)

50

A

8/20 µs

5)

20

kA

10 operations

8/20 µs

6)

20

kA

1 operation

8/20 µs

5)

25

kA

1 operation

10/350 µs

5)

5

kA

300 operations

10/1000 µs

5)

200

A

4)

> 10

G

Ω

Capacitance at 1 MHz

4)

< 1.5

pF

Transverse delay time

3)

< 0.2

µs

Arc voltage at 1 A

Glow to arc transition current

Glow voltage

~ 35

~ 1

~ 200

V

A

V

Weight

~ 2

g

Operation and storage temperature

-40 ... +90

°C

Climatic category (IEC 60068-1)

40/ 90/ 21

Marking, blue negative

250 YY O

250

- Nominal voltage

YY

- Year of production

O

- Non radioactive