Molded Case Circuit Breaker
LZAM1L-250S circuit breaker with residual current protection
Applicable Scope
LZAM1L series plastic case residual current operated circuit breaker (hereinafter referred to as leakage circuit breaker) is mainly used in power distribution network with AC 50Hz, rated voltage 400V, rated current up to 800A, to provide indirect contact protection for people, and can also be used to prevent fire hazards caused by ground fault current due to equipment insulation damage, and can be used to distribute electric energy and protect lines and power equipment from overload and short circuit, and can also be used for infrequent line conversion and infrequent motor starting. The product complies with GB/T14048.2 and IEC60947-2 standards.
Normal working and installation conditions
1. Normal use conditions: The upper limit of the ambient air temperature does not exceed +40℃, the lower limit is not lower than -5℃, and the average value within 24 hours does not exceed +35℃;
2. The altitude of the installation site shall not exceed 2000m;
3. The relative humidity of the atmosphere shall not exceed 50% when the ambient maximum temperature is +40°C; higher relative humidity is allowed at lower temperatures, and condensation on the product surface due to temperature changes shall be taken into consideration;
4. Generally it should be installed vertically, but it can also be installed horizontally (horizontally);
5. Installation category: The main circuit of the circuit breaker is Class III, and the control circuit and auxiliary circuit are Class II; 6. Pollution level: Level 3;
7. External magnetic field: The external magnetic field near the installation site shall not exceed 5 times the earth's magnetic field in any direction.
Technical parameters and performance
|
Model |
LZAM1L-100 |
LZAM1L-225 |
LZAM1L-400 |
LZAM1L-630/800 |
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| Frame grade Rated current Inm(A) |
100 |
225 |
400 |
630/800 |
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| Rated current In(A) |
10/16/20/25/32 40/50/63/80/100 |
100/125/140/160 180/200/225 |
225/250/315 350/400 |
400/500/630 630/700/800 |
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| Number of poles |
2 |
3 |
4 |
2 |
3 |
4 |
3 |
4 |
3 |
4 |
|
| Rated insulation voltage Ui(V) |
AC800 |
AC800 |
AC800 |
AC800 |
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| Rated working voltage Ue(V) |
AC400 |
AC400 |
AC400 |
AC400 |
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| Rated frequency(Hz) |
50 |
50 |
50 |
50 |
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| Rated impulse withstand voltage Uimp(V) |
8000 |
8000 |
8000 |
8000 |
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| Arcing distance(mm) |
50 |
50 |
100 |
100 |
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| Ultimate short-circuit breaking capacity Icu(kA) |
25(S) / 35(H) |
25(S) / 35(H) |
65 |
65 |
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| Operating short-circuit breaking capacity Ics(KA) |
18(S) / 22(H) |
18(S) / 22(H) |
42 |
42 |
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| Rated residual short-circuit making (breaking) capacity I△m(KA) |
8.75 |
8.75 |
12.5 |
12.5 |
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|
Rated residual operating current I△n(mA) |
Non-delay type |
30/100/300 100/300/500 |
30/100/300 100/300/500 |
100/300/500 |
300/500/1000 |
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|
Delay Type |
100/300/500 |
100/300/500 |
100/300/500 |
300/500/1000 |
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|
Rated residual non-operating current I△no (mA) |
1/2 I△n |
1/2 I△n |
1/2 I△n |
1/2 I△n |
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|
Operation performance (times) |
power ups |
1500 |
1000 |
1000 |
1000 |
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|
No electricity |
8500 |
7000 |
4000 |
4000 |
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|
Total times |
10000 |
8000 |
5000 |
5000 |
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|
Residual current protection action time |
I△n |
2 I△n |
5 I△n |
10 I△n |
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|
Maximum breaking time (s) |
Non-delay type |
0.2 |
0.1 |
0.04 |
0.04 |
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|
Delay Type |
0.5/1 .15/2.15 |
0.35/1/2 |
0.25/0.9/1 .9 |
0.25/0.9/1 .9 |
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Installation Dimensions
|
Model
|
Number of poles
|
Dimensions |
Installation Dimensions |
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|
L |
L1 |
W |
W1 |
H |
H1 |
a |
b |
D |
Φd |
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|
LZAM1L-100
|
2 |
150 |
129 |
62 |
30 |
110 |
92 |
- |
129 |
M8 |
4.5 |
|
3 |
150 |
129 |
92 |
30 |
110 |
92 |
30 |
129 |
M8 |
4.5 |
|
|
4 |
150 |
129 |
122 |
30 |
110 |
92 |
30 |
129 |
M8 |
4.5 |
|
|
LZAM1L-225
|
2 |
165 |
126 |
75 |
35 |
110 |
90 |
- |
126 |
M8 |
4.5 |
|
3 |
165 |
126 |
107 |
35 |
110 |
90 |
35 |
126 |
M8 |
4.5 |
|
|
4 |
165 |
126 |
142 |
35 |
110 |
90 |
35 |
126 |
M8 |
4.5 |
|
|
LZAM1L-400
|
3 |
257 |
194 |
150 |
44 |
145 |
106 |
44 |
194 |
M10 |
7 |
|
4 |
257 |
194 |
198 |
44 |
145 |
106 |
44 |
194 |
M10 |
7 |
|
|
LZAM1L-630
|
3 |
280 |
243 |
210 |
70 |
155 |
116 |
70 |
243 |
M12 |
7 |
|
4 |
280 |
243 |
280 |
70 |
155 |
116 |
70 |
243 |
M12 |
7 |
|
|
LZAM1L-800
|
3 |
280 |
243 |
210 |
70 |
155 |
116 |
70 |
243 |
M12 |
7 |
|
4 |
280 |
243 |
280 |
70 |
155 |
116 |
70 |
243 |
M12 |
7 |
|