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)
Typical applications
Extra low voltage wiring systems on all types of vehicles for land,
sea and air.
1
4120-...
Technical data
Voltage rating
Current rating range
Auxiliary circuit
Typical life
Ambient temperature
Insulation co-ordination
(IEC 60664 and 60664A)
Dielectric strength
(IEC 60664 and 60664A)
operating area
main to aux. circuit
Insulation resistance
Interrupting capacity I
cn
Degree of protection
(IEC 60529/DIN 40050)
Vibration
(sinusoidal)
Vibration
AC 115 V (300 Hz to 800 Hz); DC 28 V
1...25 A (0.5 A upon request)
1 A, DC 28 V (0.5 A upon request)
20,000 operations mechanical, or
5,000 operations at 1 x I
N
-55°C ...+125°C (-67...+257 °F)
rated impulse
pollution
withstand voltage
degree
1.5 kV
3
test voltage
AC 1,500 V
AC 1,500 V
> 100 MΩ (DC 500 V)
AC 115 V (400 Hz): 1...4 A
1,000 A
5...25 A
2,000 A
DC 28 V:
1...25 A
6,000 A
operating area IP40
terminal area IP00
10 g (57-2000 Hz), ± 0.76 mm (5-57 Hz)
to ISO 7137, EN 2350 para. 5.3.1
1...2.5 A: 0.04 g
2
/Hz ± 1,5 dB; 7.3 g eff
3...20 A: 0.06 g
2
/Hz ± 1,5 dB; 9 g eff
to ISO 7137, EN 2350 para. 5.3.1
17 g, to ISO 2669, EN 2350 para. 5.3.3
50 g (11 ms), to ISO 7137,
EN 2350 para. 5.3.2
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
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
Ordering information
Type No.
4120
single pole, with temperature compensation
Mounting
G
threadneck panel mounting
Threadneck design
1
M12x1x6.3 (aluminium)
2
7/16-32 UNx6.3 (aluminium)
Number of poles
1
1-pole, thermally protected
Hardware for threadneck
0
without hardware
1
hex nut M12x1, corrugated washer 12/15, fitted
3
hex nut M12x1 (aluminium),
serrated lock washer 12.1/17.2, bulk shipped
4
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
M1
thermal, 1.15 - 1.4 I
N
Terminal screws
A
Phillips screw M4x6, fitted
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
S1
with auxiliary contact (connector
EN 3155-016M2018) (NC)
S5
with polarized auxiliary contact (NC)
Barrier
Z
without barrier
Colour of the push button
G
green to EN (e. g. 2 1/2)
N
black to EN (e. g. 2 1/2)
Current ratings
1...25 A
4120 - G 1 1 1 - K1 M1 - A 1 S0 Z N - 10 A
ordering example
Acceleration
Shock
Corrosion
Humidity
Explosion
Altitude
Mass
Preferred types
Preferred types
4120-G214-J1M1-B2S0ZN
(MS3320)
4120-G111-K1M1-A1S0ZN
(EN 2495/VG93345 T06)
Standard current ratings (A)
1
x
x
2
x
x
3
x
x
5 7.5 10 15 20 25
x
x
x
x
x
x
x
x
x
x
x
x
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1
High Performance Thermal Circuit Breaker 4120-...
Standard current ratings and typical volt drop values
Current
rating (A)
1
2
2.5
3
4
Volt drop
(mV)
1100
550
460
440
380
260
Current
rating (A)
7.5
10
15
20
25
Volt drop
(mV)
250
230
200
190
190
m
in
.4
.1 .6
81
in
2
1
Dimensions 4120-G1..
4120-G111-K1M1-A1S0ZN (EN2495-…M) (VG95345 T06)
tightening torque max. 5 Nm
M12x1
2.5
.098
ø8.4
.331
ON
OFF
ø10
.394
black
white
lock washer
3.5
.138
type No.
6.35
.250
1.5
.059
13
.512
Approvals (configurations)
Authority
UL
Bw
Bw
Bw
Bw
Dep. of
the Navy
Airbus
Airbus
Standard
UL 1077
VG 95345,
part 6
EN 2495-…U /
-…M
LN 29887
EN 3773-004
MS 3320
EN 2995-004
EN 2995-005
Voltage ratings
DC 50 V
AC 115 V, 400 Hz
DC 28 V
AC 115 V, 400 Hz
DC 28 V
AC 115 V, 400 Hz
DC 28 V
AC 115 V, 400 Hz
DC 28 V
AC 115 V, 400 Hz
DC 28 V
AC 115 V, 400 Hz
DC 28 V
AC 115 V, 400 Hz
DC 28 V
Current ratings
0.5 A…25 A
m
1
5
31
1.22
18.5
.728
.2 9
ax 07
m ax .
m
45°
12.8
.504
45°
9.5
.374
0.8
.031
terminals:
1 - input
2 - output
14.2
.559
1 A…25 A
1 A…25 A
1 A…25 A
1 A…25 A
5 A…25 A
5 A…25 A
1 A…25 A
1 A…25 A
1 A…20 A
1 A…20 A
1 A…25 A
1 A…25 A
SW 1
.55
14
8.5
.335
terminal screw ISO 7045-M4x6
with lock washer DIN 137-B4
tightening torque max. 1.7 Nm
5
.197
19.5
current rating in A .768
location pin
4120-G11.-J2M1-K5S0ZN (EN2495-…U, EN3773-004 D…)
tightening torque max. 5 Nm
M12x1
2.5
.098
ø8.4
.331
OFF
ON
ø10
.394
black
white
3.5
.138
serrated lock
washer
type No.
6.35
.250
2
.079
1.5
.059
13
.512
1
.4
.1 .6
81
m
1 A…25 A
1 A…25 A
in
Dimensions 4120-...
4120-G214-J1M1-B2S0ZN (MS 3320)
tightening torque max. 5 Nm
7/16-32-UN-2A THD
2.5
.098
min. 11.9 ON
min .469
max. 19 OFF
ø8.4
.331
max .748
ø10
.394
m
in
2
45°
18
.709
45°
9.5
.374
0.8
.031
14
SW 1
.55
10.5
.413
terminal screw H8-32UNC-3Ax7.6
to FED-STD-H28/2A
with lock washer
tightening torque max. 1.7 Nm
terminals:
1 - input
2 - output
14.2
.559
black
white
serrated
lock washer
type No.
6.35
.250
current rating in A
19.5
.768
location pin
(EN2995-005)
3.5
.138
1.5
.059
4120-G112-J2M1-K5S1ZG - 4120-G112-J2M1-K5S5ZG
(EN2995-004)
tightening torque max. 5 Nm
M12x1
2.5
.098
ø10
.394
green
white
serrated lock
washer
3
m
in
.4
.1 .6
81
31
1.22
2
.079
31
1.22
18.5
.728
5
5
ø8.4
.331
.3 8
ax .11
m ax
m
12.8
.504
45°
9.5
.374
current rating in A
14.2
.559
0.8
.031
31
1.22
8.5
.335
terminal screw MS 51957-41 (8-32 UNC-2A)
with lock washer MS 35338-137
tightening torque max. 1.7 Nm
13
.512
45°
16.2
.638
1.5
.059
3.5
.138
terminals:
1 - input
2 - output
18.5
.728
5
.197
6.35
.250
OFF
in
ON
2
1
.5
.1 9
ax 05
m ax .
m
m
4
type No.
min. 8
min .315
.6
. 4 81
in .1
m in
m
.3 8
ax 1
m x .1
a
m
2
1
45°
19.5
.768
2
.079
18
.709
9.5
.374
45°
location pin
14.2
.559
This is a metric design and millimeter dimensions take precedence ( mm )
inch
max. 6.5
max .256
19.5
.768
location pin
current rating in A
2
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2
.079
aux. contact
(connector to
4
EN 3155-016
SW1
51
M2018)
.5
terminals:
1 - input
2 - output
0.8
.031
10.5
.413
25°
.413
terminal screw H8-32UNC-3Ax7.6
to FED-STD-H28/2A
with lock washer
tightening torque max. 1.7 Nm
5
5
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High Performance Thermal Circuit Breaker 4120-...
Accessories (approved to VG 95 345, part 23)
Splash cover/hex nut assembly with O ring
(IP66 and IP67)
X 200 801 08 nickel plated nut, transparent cover
X 200 801 03 matt black finish nut, black cover
X 200 801 09 matt black finish nut 7/16-32, black cover
X 200 801 12 with blackened nut and transparent cover
1
1.8
.071
M12x1 or
7/16-32
Actuator extension
(black) to be fitted on the push button
X 200 803 01
ø20
ø.787
Accessories
Identification collar
to be snapped on the push button
Y 307 004 01 black
Y 307 004 02 white
Y 307 004 03 red
Y 307 004 04 green
Y 307 004 05 blue
ø14
.551
ø6.85
.270
.252
6.4
ø12.35
.486
0.65
.026
Lock out ring
to block the push button in OFF position
Y 307 005 01 red
Y 307 005 02 black
ø14.6
.575
7.7
.303
ø10.9
.429
17
.669
0.8
.031
This is a metric design and millimeter dimensions take precedence ( mm )
inch
All dimensions without tolerances are for reference only. In the interest of improved design,
performance and cost effectiveness the right to make changes in these specifications
without notice is reserved.Product markings may not be exactly as the ordering codes.
Errors and omissions excepted.
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