Surge Tolerant Cartridge Fuses
TH1 5x20mm Thermofuses
for telecom applications
Standards / Approvals
none
Multiple of rated current In
Thermal characteristics without current
Pre-arcing time/current characteristic (at Ta 23 °C)
n · In
1,15·In 1,65 · In
3 · In
5 · In
10 · In
Rated current In
min.
1 h
max.
1 h
min.
1s
max. min. max. min.
60 s 0,3 s 10 s 30 ms
2,5 A
Wave characteristic 8 x 20 µs according to IEC 60-2
Peak current admissible
Type
1 Shock
2,5 kA
10 Shocks
2 kA
Thermolink TH1 / 2,50 A
Temperature °C
Technical data
Telecom application example
– Resistance up to 8 x 20 µs current waves (IEC 60-2) of approx
1000 · In without degradation
– Interrupting a short-circuit current of approx 1 · In
– Thermal function: breaking the circuit from 145 °C
User
Telephone exchange
Construction
Weight
Glass tube
1,4 g
(1) Parallel protector (discharger-varistor)
Climatic range
Majoration
Minoration
Vibrations
40 / 070 / 56
1,45 · In at 40 °C
0,7 · In at 70 °C
NF C 20-706 / IEC 68-2-6
10-55 Hz / 0,35 mm / 5 cycles
NF C 20-727 / IEC 68-2-27, 50 g
Shocks
Sinusoidal vibrations NF C 20-729 / IEC 68-2-29, 40 g
Thermical function
160 °C / 100 mA / t ≤ 4000 s
Order No.
Rated current In
Rated voltage Un
AC 2,5 A / 220 V
Breaking capacity
AC 40 A / 220 V
Voltage drop at In
mV
200
7040.2120
166
Schurter, Inc. • Phone 707-778-6311 • Fax 707-778-6401 • E-mail: info@schurterinc.com • Website http://www.schurterinc.com
SCHURTER [ SCHURTER INC. ]
