Surge Arrester
EM300X
2-Electrode-Arrester
Ordering code:
B88069X0800xxxx
a)
AB E / AB PM
Issue 06, 23.10.2003
Page 1 of 2
DC spark-over voltage
1) 2)
270 ... 345
V
Impulse spark-over voltage
at 100 V/s - for 99 % of measured values
- typical values of distribution
at 1 kV/s
- for 99 % of measured values
- typical values of distribution
< 700
< 600
< 800
< 700
V
V
V
V
Nominal impulse discharge current (wave 8/20 s)
Single impulse discharge current
(wave 8/20 s)
2.5
5
kA
kA
Nominal alternating discharge current (50 Hz, 1 s)
Alternating discharge current (50 Hz, 9 cycles)
2.5
5
A
A
Insulation resistance at 100 V
dc
> 1
G
Capacitance at 1 MHz
< 1
pF
Arc voltage at 1 A
Glow to arc transition current
Glow voltage
~ 11
< 0.5
~ 80
V
A
V
Weight
~ 1
g
Operation and storage temperature
-40 ... +90
C
Climatic category (IEC 60068-1)
40/ 90/ 21
Marking, red
EM 300 YY O
EM -
Series
300
- Nominal voltage
YY
- Year of production
O
- Non radioactive
a)
xxxx = S102 (100 pcs on 5 taped stripes)
= T502 (500 pcs on tape and reel)
1)
At delivery AQL 0.65 level II, DIN ISO 2859
2)
In ionized mode
Terms in accordance with ITU-T Rec. K.12 and DIN 57845/VDE0845
Surge Arrester
EM300X
2-Electrode-Arrester
Ordering code:
B88069X0800xxxx
a)
EPCOS AG 2002. Reproduction, publication and dissemination of this data sheet, enclosures hereto and the information
contained therein without EPCOS' prior express consent is prohibited.
Purchase orders are subject to the General Conditions for the Supply of Products and Services of the Electrical and
Electronics Industry recommended by the ZVEI (German Electrical and Electronic Manufacturers' Association), unless
otherwise agreed.
AB E / AB PM
Issue 06, 23.10.2003
Page 2 of 2
Not to scale
Dimensions in mm
Non controlled document
PDF 
ZIP