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NM8N Moulded Case Circuit Breaker
Product Consultation
Low Voltage IEC Sub Power Distribution NM8N Moulded Case Circuit Breaker
Clear all
Sub Power Distribution
NM8N-125S 4P-MCCB-1
NM8N-125S 4P-MCCB-3
NM8N-1600S 4P-MCCB-1
NM8N-1600S 4P-MCCB-5
NM8N-250S 4P-MCCB-1
NM8N-630S 4P-MCCB-2
NM8N-800S 4P-MCCB-5
NM8N-630S 4P-MCCB-5
NM8N-630S 4P-MCCB-6
NM8N-125S 4P-MCCB-1
NM8N-125S 4P-MCCB-3
NM8N-1600S 4P-MCCB-1
NM8N-1600S 4P-MCCB-5
NM8N-250S 4P-MCCB-1
NM8N-630S 4P-MCCB-2
NM8N-800S 4P-MCCB-5
NM8N-630S 4P-MCCB-5
NM8N-630S 4P-MCCB-6

NM8N Moulded Case Circuit Breaker

The NM8N Moulded Case Circuit Breaker (MCCB) is designed for AC and DC low-voltage distribution systems, providing protection against overload, short-circuit, and undervoltage faults.It also supports motor protection, isolation, and residual current protection, making it suitable for a wide range of industrial and commercial applications.

 

The breaker can be installed vertically or horizontally, with both top and bottom line entry options.

Contact Us

Product Information

Name
Size
Release time
Operate
NM8N-MCCB-Catalog.pdf
11.58MB
2025-03-27
Download
NM8N-HV Series-MCCB-Catalog.pdf
8.18MB
2025-03-27
Download
Name
Size
Release time
Operate
2206-NM8N-MCCB-Manual-3.pdf
16.47MB
2025-03-27
Download
2006-NM8N(24 Languages)-MCCB-Manual-1.pdf
2.2MB
2025-03-27
Download
1908-NM8N-MCCB-Manual-2.pdf
3.92MB
2025-03-27
Download
Name
Size
Release time
Operate
2405-NM8NSD-1600-MCCB-TUV Certificate.pdf
670.8KB
2025-03-27
Download
2310-NM8N-800-MCCB-CE Certificate.pdf
335.83KB
2025-03-27
Download
2310-NM8NDC-800-MCCB-UCKA Certificate.pdf
356.01KB
2025-03-27
Download
2309-NM8NL-250 EM,EN-MCCB-KEMA Certificate.pdf
2.43MB
2025-03-27
Download
2309-NM8NL-250 TM-MCCB-KEMA Certificate.pdf
2.41MB
2025-03-27
Download
2309-NM8NL-400,630 EM,EN-MCCB-KEMA Certificate.pdf
2.41MB
2025-03-27
Download
2309-NM8NL-400,630 TM-MCCB-KEMA Certificate.pdf
2.41MB
2025-03-27
Download
2308-NM8N-800-MCCB-CB Certificate.pdf
1.08MB
2025-03-27
Download
2307-NM8N-1600ST-MCCB-KEMA Certificate.pdf
2.39MB
2025-03-27
Download
2306-NM8N-125-MCCB-CB Certificate.pdf
2.22MB
2025-03-27
Download
2306-NM8N-250-MCCB-CB Certificate.pdf
2.24MB
2025-03-27
Download
2305-NM8N-250-MCCB-KEMA Certificate.pdf
2.45MB
2025-03-27
Download
2304-NM8N-400 630-MCCB-CB Certificate.pdf
2.08MB
2025-03-27
Download
2302-NM8N-MCCB-TSE Certificate.pdf
709.58KB
2025-03-27
Download
2301-NM8N-630-MCCB-KEMA Certificate.pdf
2.41MB
2025-03-27
Download
2212-NM8N-125 1P~4P 50 55℃-MCCB-KEMA Certificate.pdf
2.4MB
2025-03-27
Download
2212-NM8N-250 1P~4P 50 55℃-MCCB-KEMA Certificate.pdf
2.4MB
2025-03-27
Download
2212-NM8N-MCCB-CE RoHS Declaration Certificate.pdf
730.85KB
2025-03-27
Download
2210-NM8N-250C160A-MCCB-IMQ Certificate.pdf
985.31KB
2025-03-27
Download
2210-NM8N-400,630-MCCB-TUV Certificate.pdf
262.63KB
2025-03-27
Download
2206-NM8N-MCCB-EAC Certificate.pdf
1.84MB
2025-03-27
Download
2204-NM8N-125-MCCB-CE Certificate.pdf
2.25MB
2025-03-27
Download
2204-NM8N-125-MCCB-KEMA Certificate.pdf
2.44MB
2025-03-27
Download
2204-NM8N-125-MCCB-UKCA Certificate.pdf
2.25MB
2025-03-27
Download
2204-NM8N-250 EM,EN-MCCB-CE Certificate.pdf
2.26MB
2025-03-27
Download
2204-NM8N-250 EM,EN-MCCB-UKCA Certificate.pdf
2.25MB
2025-03-27
Download
2204-NM8N-250-MCCB-CE Certificate.pdf
2.25MB
2025-03-27
Download
2204-NM8N-250-MCCB-KEMA Certificate.pdf
2.4MB
2025-03-27
Download
2204-NM8N-250-MCCB-UKCA Certificate.pdf
2.25MB
2025-03-27
Download
2204-NM8N-600,430-MCCB-CE Certificate.pdf
2.27MB
2025-03-27
Download
2204-NM8N-630 EM,EN-MCCB-CE Certificate.pdf
2.26MB
2025-03-27
Download
2204-NM8N-630 EM,EN-MCCB-UCKA Certificate.pdf
2.26MB
2025-03-27
Download
2204-NM8N-630-MCCB-KEMA Certificate.pdf
2.4MB
2025-03-27
Download
2204-NM8N-630-MCCB-UCKA Certificate.pdf
2.26MB
2025-03-27
Download
2204-NM8NDC-125-MCCB-CE Certificate.pdf
2.25MB
2025-03-27
Download
2204-NM8NDC-125-MCCB-KEMA Certificate.pdf
2.4MB
2025-03-27
Download
2204-NM8NDC-125-MCCB-UCKA Certificate.pdf
2.25MB
2025-03-27
Download
2204-NM8NDC-250-MCCB-CE Certificate.pdf
2.25MB
2025-03-27
Download
2204-NM8NDC-250-MCCB-KEMA Certificate.pdf
2.4MB
2025-03-27
Download
2204-NM8NDC-250-MCCB-UCKA Certificate.pdf
2.25MB
2025-03-27
Download
2204-NM8NDC-630-MCCB-CE Certificate.pdf
2.25MB
2025-03-27
Download
2204-NM8NDC-630-MCCB-KEMA Certificate.pdf
2.4MB
2025-03-27
Download
2204-NM8NDC-630-MCCB-UCKA Certificate.pdf
2.26MB
2025-03-27
Download
2204-NM8NL-125-MCCB-KEMA Certificate.pdf
2.4MB
2025-03-27
Download
2204-NM8NL-125-MCCB-UCKA Certificate.pdf
2.25MB
2025-03-27
Download
2204-NM8NL-250 EM,EN-MCCB-KEMA Certificate.pdf
2.42MB
2025-03-27
Download
2204-NM8NL-250 EM,EN-MCCB-UCKA Certificate.pdf
2.25MB
2025-03-27
Download
2204-NM8NL-250-MCCB-KEMA Certificate.pdf
2.4MB
2025-03-27
Download
2204-NM8NL-250-MCCB-UCKA Certificate.pdf
2.25MB
2025-03-27
Download
2204-NM8NL-400,630 EM,EN-MCCB-KEMA Certificate.pdf
2.41MB
2025-03-27
Download
2204-NM8NL-400,630-MCCB-KEMA Certificate.pdf
2.41MB
2025-03-27
Download
2204-NM8NL-630 EM,EN-MCCB-UCKA Certificate.pdf
2.26MB
2025-03-27
Download
2204-NM8NL-630-MCCB-UCKA Certificate.pdf
2.25MB
2025-03-27
Download
2111-NM8N-400 630-MCCB-CB Certificate.pdf
1.7MB
2025-03-27
Download
2103-NM8N-MCCB-UA TR Certificate.pdf
586.82KB
2025-03-27
Download
2101-NM8N-1600-MCCB-CB Certificate.pdf
3.99MB
2025-03-27
Download
2101-NM8N-MCCB-TSE Certificate.pdf
698.18KB
2025-03-27
Download
2007-NM8N-250-MCCB-CB Certificate.pdf
3.16MB
2025-03-27
Download
2007-NM8N-400 630-MCCB-CB Certificate.pdf
656.13KB
2025-03-27
Download
2006-NM8N-1600-MCCB-CE Certificate.pdf
254.55KB
2025-03-27
Download
2006-NM8N-1600-MCCB-TUV Certificate.pdf
384.9KB
2025-03-27
Download
2003-NM8N-MCCB-CE RoHS Declaration Certificate.pdf
653.81KB
2025-03-27
Download
2003-NM8NL-MCCB-CE RoHS Declaration Certificate.pdf
640.76KB
2025-03-27
Download
2003-NM8NSD-MCCB-CE RoHS Declaration Certificate.pdf
611.19KB
2025-03-27
Download
2001-NM8N-125-MCCB-TUV Certificate.pdf
203.66KB
2025-03-27
Download
2001-NM8N-250-MCCB-TUV Certificate.pdf
397.01KB
2025-03-27
Download
1910-NM8N-250 EM,EN-MCCB-KEMA Certificate.pdf
2.27MB
2025-03-27
Download
1910-NM8N-400,630 EM,EN-MCCB-KEMA Certificate.pdf
2.3MB
2025-03-27
Download
1910-NM8NL-125-MCCB-CE Certificate.pdf
2.27MB
2025-03-27
Download
1910-NM8NL-400,630 EM,EN-MCCB-KEMA Certificate.pdf
2.27MB
2025-03-27
Download
1910-NM8NSD-125-MCCB-CB Certificate.pdf
3.08MB
2025-03-27
Download
1910-NM8NSD-250-MCCB-CB Certificate.pdf
2.99MB
2025-03-27
Download
1910-NM8NSD-400-MCCB-CB Certificate.pdf
671.33KB
2025-03-27
Download
1909-NM8NDC-1600-MCCB-CE Certificate.pdf
5.76MB
2025-03-27
Download
1909-NM8NL-125-MCCB-CB Certificate.pdf
3.64MB
2025-03-27
Download
1909-NM8NSD-1600-MCCB-CE Certificate.pdf
2.9MB
2025-03-27
Download
1908-NM8NL-250-MCCB-CB Certificate.pdf
498.07KB
2025-03-27
Download
1908-NM8NL-630-MCCB-CB Certificate.pdf
3.67MB
2025-03-27
Download
Name
Size
Release time
Operate
NM8N-1600-MOD-MCCB-Drawing-3p.stp
18.99MB
2025-03-27
Download
NM8N-1600-MOD-MCCB-Drawing-4p.stp
23.43MB
2025-03-27
Download
NM8N-AX21 AL21-MCCB-Drawing-M8.stp
2.37MB
2025-03-27
Download
NM8N-CCT21-MCCB-Drawing-M8.stp
191.12KB
2025-03-27
Download
NM8N-CCT22-MCCB-Drawing-M8.stp
188.82KB
2025-03-27
Download
NM8N-CCT23-MCCB-Drawing-M8.stp
187.9KB
2025-03-27
Download
NM8N-COMA22-MCCB-Drawing-M8.stp
2.22MB
2025-03-27
Download
NM8N-DOB 23B-MCCB-Drawing-M8,3P.stp
7.82MB
2025-03-27
Download
NM8N-DOB 23B-MCCB-Drawing-M8,4P.stp
3.15MB
2025-03-27
Download
NM8N-DOB 24B-MCCB-Drawing-M8,3P.stp
14.43MB
2025-03-27
Download
NM8N-DOB 24F-MCCB-Drawing-M8,3P.STP
14.59MB
2025-03-27
Download
NM8N-DRA21-MCCB-Drawing-M8,3P.stp
434.49KB
2025-03-27
Download
NM8N-DRA21-MCCB-Drawing-M8,4P.stp
455.36KB
2025-03-27
Download
NM8N-DRA22-MCCB-Drawing-M8,3P.stp
692.02KB
2025-03-27
Download
NM8N-DRA22-MCCB-Drawing-M8,4P.stp
677.18KB
2025-03-27
Download
NM8N-DRH21-MCCB-Drawing-M8.stp
8.27MB
2025-03-27
Download
NM8N-DRH22-MCCB-Drawing-M8.stp
5.76MB
2025-03-27
Download
NM8N-DRH23-MCCB-Drawing-M8.stp
4.29MB
2025-03-27
Download
NM8N-ERH 21-MCCB-Drawing-M8.stp
13.05MB
2025-03-27
Download
NM8N-ERH 22-MCCB-Drawing-M8.stp
8.3MB
2025-03-27
Download
NM8N-ERH 23-MCCB-Drawing-M8.stp
9.67MB
2025-03-27
Download
NM8N-FCP21-MCCB-Drawing-M8.stp
37.1KB
2025-03-27
Download
NM8N-FCP22-MCCB-Drawing-M8.stp
31.74KB
2025-03-27
Download
NM8N-FCP23-MCCB-Drawing-M8-1.stp
35.93KB
2025-03-27
Download
NM8N-FCP23-MCCB-Drawing-M8-2.stp
30.79KB
2025-03-27
Download
NM8N-FCP25-MCCB-Drawing-1.stp
61.98KB
2025-03-27
Download
NM8N-FCP25-MCCB-Drawing-2.stp
61.75KB
2025-03-27
Download
NM8N-FCP25-MCCB-Drawing-2.stp
61.75KB
2025-03-27
Download
NM8N-IMU22-MCCB-Drawing-M8,3P.dwg
55.24KB
2025-03-27
Download
NM8N-IMU22-MCCB-Drawing-M8,3P.stp
6.75MB
2025-03-27
Download
NM8N-IMU22-MCCB-Drawing-M8,4P.dwg
63.09KB
2025-03-27
Download
NM8N-IMU22-MCCB-Drawing-M8,4P.stp
8.06MB
2025-03-27
Download
NM8N-IMU23-MCCB-Drawing-M8,3P.dwg
74.37KB
2025-03-27
Download
NM8N-IMU23-MCCB-Drawing-M8,3P.stp
7.28MB
2025-03-27
Download
NM8N-IMU23-MCCB-Drawing-M8,4P.dwg
95.04KB
2025-03-27
Download
NM8N-IMU23-MCCB-Drawing-M8,4P.stp
9.69MB
2025-03-27
Download
NM8N-KLK21-MCCB-Drawing-M8.stp
164.16KB
2025-03-27
Download
NM8N-KLK22-MCCB-Drawing-M8.stp
217.25KB
2025-03-27
Download
NM8N-KLK23-MCCB-Drawing-M8.stp
161.72KB
2025-03-27
Download
NM8N-MC21-MCCB-Drawing-M8-(1).stp
978.65KB
2025-03-27
Download
NM8N-MC22-MCCB-Drawing-M8-(1).stp
258.51KB
2025-03-27
Download
NM8N-MC22-MCCB-Drawing-M8-(2).stp
850.17KB
2025-03-27
Download
NM8N-MC22-MCCB-Drawing-M8-(6).stp
1.08MB
2025-03-27
Download
NM8N-MC23-MCCB-Drawing-M8-(2).stp
359.47KB
2025-03-27
Download
NM8N-MC23-MCCB-Drawing-M8-(4).stp
885.68KB
2025-03-27
Download
NM8N-MC24-MCCB-Drawing-M8-(2).stp
662.58KB
2025-03-27
Download
NM8N-MC25-MCCB-Drawing-M8-(3).stp
1.21MB
2025-03-27
Download
NM8N-MC25-MCCB-Drawing-M8-(4).stp
1.23MB
2025-03-27
Download
NM8N-MCCB-Drawing-125,1P.stp
4.9MB
2025-03-27
Download
NM8N-MCCB-Drawing-125,2P.stp
8.53MB
2025-03-27
Download
NM8N-MCCB-Drawing-125,3P.dwg
165.63KB
2025-03-27
Download
NM8N-MCCB-Drawing-125,4P,asm.stp
15.24MB
2025-03-27
Download
NM8N-MCCB-Drawing-125,4P.dwg
173.1KB
2025-03-27
Download
NM8N-MCCB-Drawing-125-3P,asm.stp
11.61MB
2025-03-27
Download
NM8N-MCCB-Drawing-1600,3P,4P.dwg
646.16KB
2025-03-27
Download
NM8N-MCCB-Drawing-1600,3P.stp
18.65MB
2025-03-27
Download
NM8N-MCCB-Drawing-1600,4P.stp
20.95MB
2025-03-27
Download
NM8N-MCCB-Drawing-250 4P.stp
26.77MB
2025-03-27
Download
NM8N-MCCB-Drawing-250,1P.stp
7.75MB
2025-03-27
Download
NM8N-MCCB-Drawing-250,2P.stp
11.06MB
2025-03-27
Download
NM8N-MCCB-Drawing-250,3P.DWG
200.53KB
2025-03-27
Download
NM8N-MCCB-Drawing-250,3P.stp
23.12MB
2025-03-27
Download
NM8N-MCCB-Drawing-250,4P.DWG
210.34KB
2025-03-27
Download
NM8N-MCCB-Drawing-400,630,3P.dwg
105.59KB
2025-03-27
Download
NM8N-MCCB-Drawing-400,630,3P.stp
11.93MB
2025-03-27
Download
NM8N-MCCB-Drawing-400,630,4P.dwg
133.76KB
2025-03-27
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NM8N-MCCB-Drawing-400,630,4P.stp
14.92MB
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NM8N-MCCB-Drawing-800,3P,4P.dwg
733.81KB
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NM8N-MCCB-Drawing-800,3P.STP
12.85MB
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NM8N-MCCB-Drawing-800,4P.STP
16.1MB
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NM8N-MIT 21-MCCB-Drawing-M8,3P.stp
244.61KB
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NM8N-MIT 21-MCCB-Drawing-M8,4P.stp
245.17KB
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NM8N-MIT 22-MCCB-Drawing-M8,3P.stp
263.02KB
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NM8N-MIT 22-MCCB-Drawing-M8,4P.stp
251.12KB
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NM8N-MIT 23-MCCB-Drawing-M8,3P.stp
274.28KB
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NM8N-MIT 23-MCCB-Drawing-M8,4P.stp
274.24KB
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NM8N-MOD21-MCCB-Drawing-M8.stp
2.41MB
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NM8N-MOD22-MCCB-Drawing-M8.stp
2.38MB
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NM8N-MOD23-MCCB-Drawing-M8.stp
3.36MB
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NM8N-MOD24-MCCB-Drawing-M8.stp
3MB
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NM8N-MOD25-MCCB-Drawing-M8.stp
3.7MB
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NM8N-PHS21-MCCB-Drawing-M8.stp
62.72KB
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NM8N-PHS22-MCCB-Drawing-M8.stp
41.96KB
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NM8N-PHS23-MCCB-Drawing-M8.stp
82.79KB
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NM8N-PHS24-MCCB-Drawing-M8.stp
41.43KB
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NM8N-PHS25-MCCB-Drawing-M8-1.stp
43.51KB
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NM8N-PHS25-MCCB-Drawing-M8-2.stp
43.51KB
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NM8N-PIA 21B-MCCB-Drawing-M8,3P.stp
4.68MB
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NM8N-PIA 21B-MCCB-Drawing-M8,4P.stp
5.41MB
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NM8N-PIA 21F-MCCB-Drawing-M8,3P.stp
4.25MB
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NM8N-PIA 21F-MCCB-Drawing-M8,4P.stp
8.35MB
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NM8N-PIA 22B-MCCB-Drawing-M8,3P.stp
5.82MB
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NM8N-PIA 22B-MCCB-Drawing-M8,4P.stp
8.44MB
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NM8N-PIA 22F-MCCB-Drawing-M8,3P.stp
13.77MB
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NM8N-PIA 22F-MCCB-Drawing-M8,4P.stp
18.93MB
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NM8N-PIA 23B-MCCB-Drawing-M8,3P.stp
3.6MB
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NM8N-PIA 23B-MCCB-Drawing-M8,4P.stp
4.85MB
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NM8N-PIA 23F-MCCB-Drawing-M8,3P.stp
5.6MB
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NM8N-PIA 23F-MCCB-Drawing-M8,4P.stp
6.76MB
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NM8N-RCP21-MCCB-Drawing-M8,1P.stp
385.88KB
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NM8N-RCP21-MCCB-Drawing-M8,2P.stp
763.92KB
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NM8N-RCP21-MCCB-Drawing-M8,3P.stp
1.04MB
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NM8N-RCP21-MCCB-Drawing-M8,4P.stp
1.08MB
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NM8N-RCP22-MCCB-Drawing-M8,1P.stp
415.28KB
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NM8N-RCP22-MCCB-Drawing-M8,2P.stp
778.92KB
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NM8N-RCP22-MCCB-Drawing-M8,3P.stp
1.11MB
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NM8N-RCP22-MCCB-Drawing-M8,4P.stp
1.12MB
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NM8N-RCP23-MCCB-Drawing-M8,3P.stp
789.65KB
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NM8N-RCP23-MCCB-Drawing-M8,4P.stp
795.67KB
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NM8N-RCP24-MCCB-Drawing-M8,3P.stp
884.85KB
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NM8N-RCP24-MCCB-Drawing-M8,4P.stp
1.15MB
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NM8N-SHT21,UVT21-MCCB-Drawing-M8.stp
2.9MB
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NM8N-SHT22 UVT22-MCCB-Drawing-M8.stp
3.85MB
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NM8N-SHT24 UVT24-MCCB-Drawing-M8.stp
3.97MB
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NM8N-SHT26-MCCB-Drawing-M8.stp
1.63MB
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NM8N-SRH21-MCCB-Drawing-M8,3P.stp
2.83MB
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NM8N-SRH21-MCCB-Drawing-M8,4P.stp
2.86MB
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NM8N-SRH22-MCCB-Drawing-M8,3P.stp
5.09MB
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NM8N-SRH22-MCCB-Drawing-M8,4P.stp
2.87MB
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NM8N-SRH22-MCCB-Drawing-M8.stp
5.24MB
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NM8N-SRH23-MCCB-Drawing-M8.stp
3.17MB
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NM8N-SRH24-MCCB-Drawing-M8.stp
902.36KB
2025-03-27
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NM8N-SRH25-MCCB-Drawing-M8.stp
3.77MB
2025-03-27
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NM8N-TCE21-MCCB-Drawing-M8,3P.stp
1.7MB
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NM8N-TCE21-MCCB-Drawing-M8,4P.stp
2.33MB
2025-03-27
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NM8N-TCE22-MCCB-Drawing-M8,3P.stp
1.59MB
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NM8N-TCE22-MCCB-Drawing-M8,4P.stp
1.96MB
2025-03-27
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NM8N-TCE23-MCCB-Drawing-M8,3P.stp
1.42MB
2026-02-04
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NM8N-TCE23-MCCB-Drawing-M8,4P.stp
1.79MB
2026-02-04
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NM8N-TCE24-MCCB-Drawing-M8,3P.stp
2.58MB
2025-03-27
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NM8N-TCE24-MCCB-Drawing-M8,4P.stp
3.5MB
2025-03-27
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NM8N-TCV21-MCCB-Drawing-M8,3P.stp
1.67MB
2025-03-27
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NM8N-TCV21-MCCB-Drawing-M8,4P.stp
2.14MB
2025-03-27
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NM8N-TCV22-MCCB-Drawing-M8,3P.stp
1.81MB
2025-03-27
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NM8N-TCV22-MCCB-Drawing-M8,4P.stp
2.1MB
2025-03-27
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NM8N-TCV23-MCCB-Drawing-M8,3P.stp
1.99MB
2025-03-27
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NM8N-TCV23-MCCB-Drawing-M8,4P.stp
1.99MB
2025-03-27
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NM8N-TCV24-MCCB-Drawing-M8,3P.stp
2.28MB
2025-03-27
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NM8N-TCV24-MCCB-Drawing-M8,4P.stp
3MB
2025-03-27
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NM8N-UVT26-MCCB-Drawing-M8.stp
1.87MB
2025-03-27
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NM8N-TCE23-M8 3P-MCCB-Drawing.stp
926.37KB
2026-02-04
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NM8N-TCE23-M8 4P-MCCB-Drawing.stp
1.43MB
2026-02-04
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FAQs

 

Under what circumstances should I use the NM8N Moulded Case Circuit Breaker?

The NM8N MCCB is ideal for low-voltage distribution systems (AC ≤690V or DC ≤1000V) that require protection against overload, short-circuit, and undervoltage faults. It is suitable for industrial plants, commercial buildings, data centers, and renewable energy systems — especially where high reliability and compact installation are critical.

 

Can the NM8N MCCB be used in DC systems or solar energy applications?

Yes. Certain NM8N variants support DC circuits up to 1000V, making them suitable for solar PV combiner boxes, energy storage systems, and DC distribution panels. Always select the DC-rated version and verify the polarity connection according to CHINT’s installation guidelines.

 

What are the advantages of choosing an electronic trip unit (EN or EM type) instead of a thermal-magnetic one?

Electronic trip units provide greater accuracy and adjustability. They allow users to fine-tune protection parameters such as long-time, short-time, and instantaneous trips, as well as earth fault detection (EM models). This is especially useful for critical loads or selective coordination in complex networks.

 

Can the NM8N MCCB operate in harsh or outdoor environments?

Yes. The breaker is rated for operation from −40°C to +70°C, with IP40 protection and durable thermoset housing. It’s suitable for both indoor switchboards and semi-outdoor environments (when installed in a protected enclosure). For higher humidity or dust exposure, using sealed terminal covers or dust-proof accessories is recommended.

 

What installation options are available for the NM8N series?

The NM8N MCCB offers flexible mounting configurations — it can be installed in fixed, plug-in, or withdrawable versions, with front or rear connections, and in vertical or horizontal orientations. This versatility makes it adaptable for panel builders, OEMs, and retrofit upgrades where space and layout vary.

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