157-P10-KF-10A Datasheet, PDF (1/4 Pages) ETAL Group – Motors, transformers, solenoids, extra low voltage wiring systems

Thermal Overcurrent Circuit Breaker 157
Description
Single pole thermal circuit breaker with push-to-reset, tease-free,
trip-free, snap action mechanism (R-type TO CBE to EN 60934),
threadneck panel mounting. The optional -KF housing is particularly
suited to high humidity and other damp conditions.
Approved to CBE standard EN 60934 (IEC 60934).
Typical applications
Motors, transformers, solenoids, extra low voltage wiring systems.
Ordering information
1
157-...
Type No.
157 threadneck panel mounting (plastic knurled nut bulk
shipped with 5 pcs plus)
Terminal design
P10 blade terminals A6.3-0.8 (QC .250)
K10 screw terminals M4x6
Housing
KF for tropical and high humidity conditions
Current ratings
0.05...25 A
157 - P10 - .. - 10 A ordering example
Standard current ratings and typical internal resistance values
Current
rating (A)
0.05
0.08
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
1
1.2
Internal
Current
resistance (Ω) rating (A)
280
3
100
3.5
110
4
29
4.5
14
5
7
6
4.9
7
3.4
8
2.5
10
1.8
12
1.2
13
0.8
15
Internal
resistance (Ω)
0.1
0.06
0.06
0.05
0.05
0.02
0.02
0.02
< 0.02
< 0.02
< 0.02
< 0.02
Technical data
For further details please see chapter: Technical Information
Voltage rating

AC 250 V; DC 28 V
(UL: AC 250 V; DC 50 V)
Current ratings
0.05...25 A
Typical life

0.05...16 A 5,000 operations at 2 x I_N, inductive
17...25 A 5,000 operations at 2 x I_N, resistive
Ambient temperature
-20...+60 °C (-4...+140 °F)
Insulation co-ordination
(IEC 60664 and 60664 A)

rated impulse
pollution
withstand voltage
degree
2.5 kV
2
reinforced insulation in operating area
Dielectric strength
(IEC 60664 and 60664A)
operating area
test voltage
AC 3,000 V
Insulation resistance
> 100 MΩ (DC 500 V)
Interrupting capacity I_cn


0.05...2.5 A
3...5 A
6...12 A
13...25 A
8 x I_N
20 x I_N
200 A
300 A
Interrupting capacity
(UL 1077)
I_N
0.05...20 A
0.05...25 A
U_N
AC 250 V
DC 50 V
2,000 A
2,500 A
Degree of protection
(IEC 60529/DIN 40050)
operating area IP40
terminal area IP00
Vibration

8 g (57-500 Hz) ± 0.61 mm (10-57 Hz)
to IEC 60068-2-6, test Fc,
10 frequency cycles/axis
Shock
25 g (11 ms)
to IEC 60068-2-27, test Ea
Corrosion
96 hours at 5 % salt mist,
to IEC 60068-2-11, test Ka
Humidity

240 hours at 95 % RH
to IEC 60068-2-78, test Cab
Mass
approx. 24 g
1.5
0.6
16
< 0.02
1.8
0.2
20
< 0.02
Approvals
2
0.3
22
2.5
0.2
25
< 0.02
< 0.02
Authority
VDE
UL
CSA
CQC
Standard
IEC / EN
60934
UL 1077
Rated voltage
AC 250 V
DC 28 V
AC 250 V
DC 50 V
C22.2 No 235
GB 17701
AC 250 V
DC 50 V
AC 250 V
DC 28 V
Current ratings
0.05 A…25 A
0.05 A…20 A
0.05 A…20 A
0.05 A…25 A
0.1 A…20 A
0.1 A…25 A
0.05 A…25 A
0.05 A…25 A
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