
70
1
Issue C
%
Germany (0 91 87) 10-0 - USA (847) 827-7600 - UK (01296) 420336 - www.etacbe.com
Thermal Overcurrent Circuit Breaker 3120-F...
2 pole,
thermally protected
line
2 pole,
thermally protected on one pole only
line
1 pole,
thermally protected
2 pole,
unprotected
Typical time/current characteristics
Internal connection diagrams
Ordering information
1 or 2 pole load
0.1...2 A
10000
2.5...20 A
12(i)
22(i)
11
21
12(i)
12(k)
22(i)
22(k)
load
line
load
12(k)
load
11
line
12(i)
12(k)
22(i)
load
11
21
12(i)
22(i)
11
21
1
2
4
6
8 10
20
40
… times rated current
T
1000
100
10
1
0.1
+23
°
C
+60
°
C
-30
°
C
1
2
4
6
8 10
20
40
… times rated current
T
10000
1000
100
10
1
0.1
+23
°
C
+60
°
C
-30
°
C
Time/current characteristics are calibrated at 23
°
C (see page 8). For operation at
other temperatures please apply the factors below to determine the circuit
breaker rating required.
Ambient temperature
°
C
-30 -20 -10 0 +23 +40 +50 +60
Multiplication factor
0.8 0.84 0.88 0.92 1
1.08 1.14 1.23
Type No.
3120
push button switch/circuit breaker
Mounting
F
snap in frame
Size of frame
2 special frame for fitting splash cover
3 to fit mounting cut-out 50.5x21.5 mm, panel thickness 1-6.35 mm
Number of poles
0 2 pole, unprotected, switch only
1 1 pole, thermally protected
2 2 pole, thermally protected
5 2 pole, thermally protected on one pole only (terminals 11,12k,12i)
6 1 pole, unprotected, switch only
Mounting frame design
F
with 2 push buttons
G
with 1 push button (switch-on only)
Terminal configuration
P7 blade terminals 2x2.8x0.8 mm (terminals 12(k), 22(k),
11,. 21), not for under voltage module, not for switch
H7 12(k), 22(k): blade terminals 2x2.8-0.8
11, 21: terminal screws, not for switch
N7 as P7, but including shunt terminals 12(i) and 22 (i)
as blade terminals 2x2.8x0.8 mm
not for under voltage module
G7 as H7, but including shunt terminals 12(i) and 22 (i)
as blade terminals 2x2.8x0.8 mm
Characteristic curve
T1
thermal, 1.01-1.4 I
N
Q1
switch only, only for N7 or G7 terminal
Switch style/colour
D
1 push button (re-set only)
01X
black
04X
red
12X
white translucent
19X
green translucent
S
2 push buttons
GRX
green translucent/red
WRX
white translucent/red
WBX
white translucent/black
Push button illumination (optional)
B
L
G green LED, AC/DC
Y
R
on/off
filament/neon, AC/DC
neon, AC
yellow LED, AC/DC
red LED, AC/DC
Illumination voltage range
0
6 V 80 mA (B, G, Y, R)
1
12 V 75 mA (B, G, Y, R)
2
24 V 35 mA (B, G, Y, R)
3
115 V <1 mA (L)
4
230 V <1 mA (L)
5
48 V 35 mA (B, Y, R)
Current ratings
0.1...20 A
3120 - F
3 2 F - N7 T1 - S
GRX
L
4 - 10 A
ordering example
3120 - F
3 0 F - N7 Q1 - S
...
.
. - 20 A
switch only
N.B.
Switch only versions must be specified with -N7 or -G7 terminals.
Terminals 12(k) and 22 (k) are not fitted.