High Performance Thermal Circuit Breaker 483-...
www.e-t-a.
de
1646 1
1
Description
Typical applications
Technical data
Single pole, miniaturised, aircraft style thermal circuit breaker with
tease-free, trip-free, snap action mechanism and push/pull on/off manual
actuation (M-type TO CBE to EN 60934). An indicator band on the
push button clearly shows the tripped/off position. Threadneck panel
mounted, available in metric and US (MS 3320) configurations. Advanced
two-chamber design contributes to fail-safe operation. Temperature
compensated from -55 °C to +125 °C, with optional auxiliary contacts,
and fully approved for use on a wide range of aircraft and equipment. Full
specification ensures suitability for the most demanding applications. For
three pole version see type 583.
Aircraft systems and equipment (fixed wing and helicopters);
other extra low voltage wiring applications; defence equipment;
communications systems.
483-...
without auxiliary contact with auxiliary contact
Voltage rating AC 115 V (300 Hz to 800 Hz); DC 28 V
(higher voltage ratings upon request)
Current rating range 1...35 A
Auxiliary circuit 0.5 A, DC 28 V
Typical life 20,000 operations mechanical or
10,000 operations at I
N
(≤ 25 A)
5,000 operations at I
N
(30 + 35 A)
Ambient temperature -55...+125 °C (-67...+257 °F)
Insulation co-ordination rated impulse pollution
(IEC 60664 and 60664A) withstand voltage degree
1.5 kV 3
Dielectric strength
(IEC 60664 and 60664A) test voltage
operating area AC 1,500 V
main to aux. circuit AC 1,500 V
Insulation resistance > 100 MΩ (DC 500 V)
Interrupting capacity I
cn
AC 115 V (400 Hz): 5 A 2,000 A
7.5...35 A 2,500 A
DC 28 V: 1...25 A 6,000 A
30 + 35 A 4,000 A
Degree of protection operating area IP40
(IEC 60529/DIN 40050) terminal area IP00
Vibration
(sinusoidal) 15 g (70-2000 Hz), ± 0.76 mm (5-70 Hz)
to VG 95210, sheet 19,
IEC 60068-2-6, test Fc/ISO 7137
Vibration (random) 16.4 g rms, 0.2 g
2
/Hz ± 1.5 dB
to VG 95210, sheet 29, ISO 7137
Acceleration 17 g, to ISO 2669
Shock 75 g (11 ms) to VG 95210, sheet 28,
IEC 60068-2-27, test Ea/ISO 7137
Corrosion 96 hours at 5 % salt mist, severity A
48 hours at 20 % salt mist, severity B
to VG 95210, sheet 2,
IEC 60068-2-11, test Ka/ISO 7137
Humidity 240 hours at 95 % RH,
to VG 95210, sheet 7,
IEC 60068-2-3, test C/ISO 7137
Explosion to VG 95210, sheet 10,
MIL-STD-202, meth. 109
Altitude ≤ 25,000 m above sea level
Mass max. 29 g with auxiliary contact
max. 25 g without auxiliary contact
Weight reduction through aluminium threadneck: approx. 3 g
Approvals
Standard current ratings and typical volt drop values
Current rating (A) Volt drop (mV) Current rating (A) Volt drop (mV)
1 750 10 190
2 520 15 190
2.5 400 20 200
3 360 25 170
4 350 30 160
5 260 35 150
7.5 230
Authority Standard Rated voltage Current
ratings
UL UL 1077 AC 250 V
DC 75 V
1 A…25 A
1 A…35 A
CSA C22.2 No
235
AC 250 V
DC 75 V
1 A…25 A
1 A…35 A
Bw VG 95345,
part 6
AC 115 V, 400 Hz
DC 28 V
1 A…25 A
1 A…25 A
Bw LN 29886 AC 115 V, 400 Hz
DC 28 V
1 A…25 A
1 A…25 A
QPL Canada
Dep. of National
Defence
VG 95345,
part 6
AC 115 V, 400 Hz
DC 28 V
1 A…25 A
1 A…25 A
QPL Sweden
Defence
Material Admin.
LN 29886
MS 3320
AC 115 V, 400 Hz
DC 28 V
1 A…25 A
1 A…25 A
QPL UK
Ministery of
Defence
LN 29886 AC 115 V, 400 Hz
DC 28 V
1 A…25 A
1 A…25 A
Dep. of the
Navy
MS 3320
(V)
AC 115 V, 400 Hz
DC 28 V
1 A…20 A
1 A…20 A
