Datasheet

Thermal Overcurrent Circuit Breaker 1658-...
www.e-t-a.de
1908 2
1
The time/current characteristic curve depends on the ambient temperature
prevailing. In order to eliminate nuisance tripping, please multiply the circuit
breaker current ratings by the derating factor shown below. See also section
Technical information.
Ambient temp. °F
Ambient temp. °C
-4
-20
+14
-10
+32
0
+73.4
+23
+104
+40
+122
+50
+140
+60
Derating factor I
N
> 7A
I
N
< 7A
0.83
0.74
0.85
0.76
0.9
0.82
1
1
1.1
1.23
1.18
-
1.25
-
Internal connection diagram
2
1
12468102040
… times rated current
Trip time in seconds
10000
1000
100
10
1
0.1
+60 °C
+140 °F
+23 °C
+73.4 °F
-20 °C
-4 °F
Typical time/current characteristics
Dimensions
Installation drawing
Terminal design
A
00
1
12.7
OFF
ø6
27
17.5
6
ON
12
0.7
12
.236
.039
.236
.028
.500
1.06
.472
.689
14
15.7
32
13.6
.535
.618
1.26
.551
3/8-27UNS-2A
4
G21
.157
tightening torque max. 0.8 Nm
See ordering information for mounting hardware.
12
5 5
mounting area
operating area
34 7
.276
.197 .197
1.34
.157
.157
4
4
P13
12
12
P10
blade terminals DIN 46244-A6.3-0.8
(QC .250)
3
12
blade terminals DIN 46244-A6.3-0.8 (QC .250)
angled 90°
8.5
.472
.335
.118
This is a metric design and millimeter dimensions take precedence (
mm
)
inch