High Performance Thermal Circuit Breaker 4120-...
Description
Single pole, miniaturised thermal circuit breaker with trip-free mechanism
and push/pull on/off manual actuation (M-type TO CBE to EN 60934).
Threadneck panel mounted, temperature-compensated, with optional
auxiliary contacts. Fully approved for commercial aircraft and similar
requirements.
Various dummies are available without protective function, allowing
connection of pre-installed wiring without loads.
US patent number: US 6,490,141 B2 (4120-G4 moulded threadneck)
1
Typical applications
4120-...
Extra low voltage wiring systems on all types of vehicles for land,
sea and air.
Technical data
Ordering information
Voltage rating
Current rating range
Auxiliary circuit
Typical life
AC 115 V (300 Hz to 800 Hz); DC 28 V
1...25 A (0.5 A upon request)
Type No.
1 A, DC 28 V (0.5 A upon request)
4120 single pole, with temperature compensation
Mounting
20,000 operations mechanical, or
5,000 operations at 1 x IN
G threadneck panel mounting
Threadneck design
1 M12x1x6.3 (aluminium)
2 7/16-32 UNx6.3 (aluminium)
Number of poles
Ambient temperature
-55°C ...+125°C (-67...+257 °F)
Insulation co-ordination
(IEC 60664 and 60664A)
rated impulse
withstand voltage
1.5 kV
pollution
degree
3
1 1-pole, thermally protected
Hardware for threadneck
Dielectric strength
(IEC 60664 and 60664A)
operating area
test voltage
AC 1,500 V
AC 1,500 V
0
1
3
without hardware
hex nut M12x1, corrugated washer 12/15, fitted
hex nut M12x1 (aluminium),
main to aux. circuit
serrated lock washer 12.1/17.2, bulk shipped
hex nut 7/16-32UN (aluminium),
serrated lock washer 11.3/14.9, fitted
Terminal design (main terminals)
K1 screw terminals with metric thread K14 (M4)
J1 screw terminals with inch thread J14 (8-32UNC-2B)
J2 screw terminals with inch thread J17 (8-32UNC-2B)
J3 screw terminals with inch thread J25 (6-32UNC-2B)
P1 blade terminals 6.3x0.8, DIN 46244, silver-plated
Characteristic curve
Insulation resistance
> 100 MΩ (DC 500 V)
4
Interrupting capacity Icn
AC 115 V (400 Hz): 1...4 A
5...25 A
1,000 A
2,000 A
6,000 A
DC 28 V:
1...25 A
Degree of protection
(IEC 60529/DIN 40050)
operating area IP40
terminal area IP00
Vibration
(sinusoidal)
10 g (57-2000 Hz), 0.76 mm (5-57 Hz)
to ISO 7137, EN 2350 para. 5.3.1
2
Vibration
1...2.5 A: 0.04 g /Hz 1,5 dB; 7.3 g eff
M1 thermal, 1.15 - 1.4 IN
2
3...20 A: 0.06 g /Hz 1,5 dB; 9 g eff
Terminal screws
A Phillips screw M4x6, fitted
to ISO 7137, EN 2350 para. 5.3.1
Acceleration
Shock
17 g, to ISO 2669, EN 2350 para. 5.3.3
B Phillips screw 8-32UNC-2Ax6, fitted
C Phillips screw 6-32UNC-2Ax6 (MS 51957-26)
K hex screw with Phillips head 8-32UNC-3Ax7.6, fitted
M hex screw with Phillips head 8-32UNC-
3Ax7.6, bulk shipped
Z without terminal hardware
Terminal washers
0 without lock washer
1 wave washer A4, fitted
2 lock washer 4.3, fitted
4 lock washer 3.7 (MS 35338-136)
5 lock washer 4.3/9, fitted
6 lock washer 4.3/9, bulk shipped
Auxiliary contact
S0 without auxiliary contact
50 g (11 ms), to ISO 7137,
EN 2350 para. 5.3.2
Corrosion
Humidity
48 hours at 5 % salt mist
to ISO 7137, EN 2350 para. 5.4.2
240 hours at 95 % RH,
to ISO 7137, EN 2350 para. 5.4.3
Explosion
Altitude
Mass
to VG 95210, sheet 10
≤ 22,000 m above sea level
approx. 20.6 g with terminal screws,
without -Si
approx. 24.6 g with terminal screws,
with -Si
S1 with auxiliary contact (connector
EN 3155-016M2018) (NC)
S5 with polarized auxiliary contact (NC)
Barrier
Preferred types
Z without barrier
Colour of the push button
Preferred types
Standard current ratings (A)
G
N
green to EN (e. g. 2 1/2)
black to EN (e. g. 2 1/2)
Current ratings
1...25 A
1
2
3
5
7.5 10 15 20 25
4120-G214-J1M1-B2S0ZN
(MS3320)
x
x
x
x
x
x
x
x
x
4120-G111-K1M1-A1S0ZN
(EN 2495/VG93345 T06)
x
x
x
x
x
x
x
x
x
4120 - G 1 1 1 - K1 M1 - A 1 S0 Z N - 10 A
ordering example
1646
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