
Issue C
4
%
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239
Voltage rating
Current rating range
Auxiliary circuit
Typical life
AC 115 V (400 Hz); DC 28 V
1...25 A
0.5 A, DC 28 V
20,000 operations mechanical, or
5,000 operations mechanical and
2,500 operations at I
N
-55
°
C ...+125
°
C
Rated impulse
withstand voltage degree
1.5 kV
Ambient temperature
Insulation co-ordination
(IEC 664 and 664A)
Pollution
3
Dielectric strength
(IEC 664 and 664A)
operating area
main to aux. circuit
Insulation resistance
Interrupting capacity I
cn
Test voltage
AC 1500 V
AC 1500 V
>100 M
(DC 500 V)
AC 115 V (400 Hz):
1... 3 A 1,000 A
5...25 A 2,000 A
DC 28 V:
1...25 A 6,000 A
operating area IP 40
terminal area IP 00
10 g (57-2000 Hz),
±
0.76 mm (5-57 Hz)
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
Degree of protection
(IEC 529/DIN 40050)
Vibration
Acceleration
Shock
Corrosion
Humidity
Explosion
Altitude
Mass
High Performance Thermal Circuit Breaker 4120-...
Technical data
Description
4120-...
Ordering information
Standard current ratings and typical volt drop values
Current
rating (A)
Volt drop
(mV)
Current
rating (A)
Volt drop
(mV)
1
2
2.5
3
5
1100
550
460
440
260
7.5
10
15
20
25
250
230
200
190
190
Single pole, miniaturised thermal circuit breaker with snap action
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.
Typical applications
Extra low voltage wiring systems on all types of vehicles for land, sea and air.
X 200 801 08 Water splash cover/hex nut assembly. The concertina design is
extended when the button trips to the OFF position. Plated finish.
X 200 801 03 As above but blackened finish.
X 200 803 01 Screw-tightened clamp-on actuator extension to aid manual operation.
Accessories
EN 2495
EN 3773
prEN 2995
Approvals (configurations)
Type No.
4120
single pole, with temperature compensation
Mounting
G threadneck panel mounting
Threadneck design
1 M12x1x6.3 (aluminium)
Number of poles
1
1 pole, thermally protected
Hardware for threadneck
0
without hardware
1
hex nut M12x1, corrugated washer 12/15, fitted
2
hex nut M12x1 (aluminium), serrated lock washer 12.1/17.2, fitted
3
hex nut M12x1 (aluminium), serrated lock washer 12.1/17.2, bulk shipped
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)
Characteristic curve
M1
thermal, 1.15 - 1.38 IN
Terminal screws
A Phillips screw M4x6, fitted
B Phillips screw 8-32UNC-2Ax6, fitted
D slotted flat head screw M5x6, fitted
K hex screw with Phillips head 8-32UNC-
3Ax7.6 (ASN E0736), fitted
M hex screw with Phillips head 8-32UNC-
3Ax7.6 (ASN E0736), bulk shipped
Z without terminal hardware
Terminal washers
0 without lock washer
1 lock washer A4, fitted
2 lock washer 4.3, fitted
5 lock washer 4.3/9 (ASN A2553), fitted
6
lock washer 4.3/9 (ASN A2553), bulk shipped
Auxiliary contact
S0 without auxiliary contact
S1
with auxiliary contact (connector
EN3155-016M2018 (NC)
with polarized auxiliary contact (NC)
Barrier
Z without barrier
Colour of the push button
G
green to EN
N
black to EN
S
black,
with white marking
X
black, without marking
Current ratings
1...25 A
S5
4120 - G 1 1 1 - K1 M1 -
A 1 S0 Z N - 10 A ordering example