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1. Application |
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SM8 series MCCB is one of new products developed and manufactured by adopting international advanced technology. It is supplied with rated insutating voltage 690V and used for circuit of AC 50/60Hz, rated operating voltage AC 415V or below, rated opereating current from 16A to 630A. It is designed for protection of electric circuit, motors, transformers and other equipments. The products conforms to IEC60947-2 standard.
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2. Specification
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| Type |
SM8-160X |
SM8-160 |
SM8-250 |
SM8-400 |
SM8-630 |
Poles number |
3 |
3 |
3 |
3 |
3 |
Rated current In(A) |
20~160A |
50~160A |
100~250A |
200~400A |
315~400A |
Rated operating voltage Ue(V) AC 50/60Hz |
690 |
690 |
690 |
690 |
690 |
Rated insulation voltage Ui(V) |
800 |
800 |
800 |
800 |
800 |
Rated impulse withstand voltage Uimp(KV) |
8 |
8 |
8 |
8 |
8 |
Utilisation category |
A |
A |
A |
A |
A |
Rated ultimate short-circuit breaking capacityIcu(KA) |
AC 220/240V |
65 |
65 |
65 |
65 |
65 |
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AC 380/415V |
40 |
40 |
40 |
40 |
40 |
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AC 690V |
8 |
12 |
12 |
12 |
12 |
Rated short-circuit servicebreaking capacityIcs(KA) |
AC 220/240V |
65 |
65 |
65 |
65 |
65 |
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AC 380/415V |
40 |
40 |
40 |
40 |
40 |
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AC 690V |
4 |
6 |
6 |
6 |
6 |
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Thermomagnetic
T(thermal)
M(maghetic)
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| SM8-160X |
SM8-160 |
SM8-250 |
| In |
T adjustable
(0.8~1.0In) |
M
fixed |
In |
T adjustable
(0.8~1.0In) |
M adjustable |
In |
T adjustable
(0.8~1.0In) |
M adjustable |
| 20A |
16~20A |
300A |
50A |
40~50A |
300~600A |
200A |
160~200A |
1000~2000A |
| 32A |
25~32A |
300A |
63A |
50~63A |
300~600A |
250A |
200~250A |
1200~2500A |
| 40A |
32~40A |
600A |
80A |
63~80A |
400~800A |
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| 50A |
40~50A |
600A |
100A |
80~100A |
500~1000A |
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| 63A |
50~63A |
600A |
125A |
100~125A |
625~1250A |
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| 80A |
63~80A |
1000A |
160A |
125~160A |
800~1600A |
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| 100A |
80~100A |
1000A |
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| 125A |
100~125A |
1000A |
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| 160A |
125~160A |
1500A |
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| SM8-400 |
SM8-630 |
| In |
T adjustable(0.8~1.0In) |
M adjustable |
In |
T adjustable(0.8~1.0In) |
M adjustable |
| 200A |
160~200A |
1000~2000A |
315A |
250~315A |
1575~3150A |
| 250A |
200~250A |
1200~2500A |
400A |
315~400A |
2000~4000A |
| 315A |
250~315A |
1575~3150A |
500A |
400~500A |
2500~5000A |
| 400A |
315~400A |
2000~4000A |
630A |
500~630A |
3250~6500A |
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3. Outline and Installation Dimension |
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SM8-160X |
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SM8-250 |
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SM8-400 |
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SM8-630 |
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