标称DC火花放电电压（VDC）	250
标称放电电流脉冲∕交流电（kA/A）	20/10
尺寸dxl（毫米）	8x10
脉冲火花放电电压  (@1KV/US）	<600
脉冲火花放电电压  (@100V/US）	<500
容差	±20%
短路弹簧	With short circuit spring
适用	线路保护 基站 其它保护
型号	T23A250XF4
订购代码	B88069X8860B502

Surge arrester B88069X8860B502

3-electrode arrester T23-A250XF4

KB AB E / KB AB PM Issue 06 / 2007-10-18

Please readCautions and warningsand Page 2 of 4

Important notesat the end of this document.

Features Applications

Standard size

Fast response time

High current rating

Stable performance over life

Very low capacitance

High insulation resistance

Reliable failsafe device

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

< 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

10 operations [5x (+) & 5x (-)] 8/20 μs 5) 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

Insulation resistance at 100 Vdc

4) > 10 GΩ

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

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