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CM3LE (M3L) Earth Leakage MCCB Molded-Case-Circuit-Breaker 63A-800A
The CM3L series molded case circuit breakers are mainly applicable to AC 50Hz circuits with a rated working voltage up to 400V and a rated working current up to 800A.
CM3L series is an earth leakage protection type based on CM3 circuit breaker. It provides overload, short circuit AND earth leakage protection, effectively preventing electric shock and fire risk.
It is widely used in places requiring high safety, such as construction sites, hospitals, schools, commercial complexes and residential areas.
CM3L (M3L) Earth Leakage Circuit Breaker – Description
CM3L series is an earth leakage protection type based on CM3 circuit breaker. It provides overload, short circuit AND earth leakage protection, effectively preventing electric shock and fire risk.
It is widely used in places requiring high safety, such as construction sites, hospitals, schools, commercial complexes and residential areas.
CM3L (M3L) Series Earth Leakage MCCB – Overview
| Model | Current | Leakage Protection |
|---|---|---|
| CM3L-100 | 100A | 30mA / 100mA / 300mA |
| CM3L-225 | 225A | 30mA / 100mA / 300mA |
| CM3L-400 | 400A | 30mA / 100mA / 500mA |
| CM3L-630 | 630A | 100mA / 500mA |
Main Technical Parameters
CM3L (M3L) Series Earth Leakage MCCB – Detailed Technical Parameters
| Item | CM3L-100 | CM3L-225 | CM3L-400 | CM3L-630 |
|---|---|---|---|---|
| Frame Current Inm (A) | 100 | 225 | 400 | 630 |
| Rated Current In (A) | 10,16,20,32,40,50,63,80,100 | 100,125,160,180,200,225 | 225,250,315,350,400 | 400,500,630 |
| Rated Insulation Voltage Ui (V) | 690 | 800 | 690 | 690 |
| Rated Operating Voltage Ue (V) | 400 | 230/400 | 400 | 400 |
| Rated Impulse Withstand Voltage Uimp (kV) | 6 | 8 | 6 | 6 |
| No. of Poles | 3P+N / 4P | 3P+N / 4P | 3P+N / 4P | 3P+N / 4P |
| Breaking Class | L/M | L/M/H | L/M | L/M |
| Ultimate Breaking Capacity Icu (kA) AC400V | 35/50 | 35/50/65 | 45/65 | 45/65 |
| Service Breaking Capacity Ics (kA) AC400V | 25/30 | 25/30/50 | 22.5/32.5 | 22.5/32.5 |
| Leakage Current (mA) | 30/100/300 | 30/100/300 | 30/100/500 | 100/500 |
| Arc Flash Distance (mm) | ≤50 | ≤50 | ≤100 | ≤100 |
| Operating Cycles / Hour | 120 | 120 | 60 | 60 |
| Mechanical Life With Load | 3000 | 3000 | 1500 | 1500 |
| Mechanical Life No Load | 7000 | 7000 | 6500 | 6500 |
| Tripping Type | Thermal-magnetic + Leakage | Thermal-magnetic + Leakage | Thermal-magnetic + Leakage | Thermal-magnetic + Leakage |
| Protection Class | IP30 | IP30 | IP30 | IP30 |
| Standards | GB14048.2, IEC60947-2 | GB14048.2, IEC60947-2 | GB14048.2, IEC60947-2 | GB14048.2, IEC60947-2 |
CM3L (M3L) Series – Core Features
- Integrated earth leakage protection
- Adjustable leakage current (30mA/100mA/300mA/500mA)
- Overload, short circuit and leakage triple protection
- High safety and anti-fire performance
- Stable zero-sequence current detection
- Easy installation and maintenance
CM3L (M3L) – Typical Applications
Hospitals & Medical Facilities
Schools & Public Buildings
Construction Site Power
Commercial Complexes
Residential Power Distribution
High Safety Industrial Sites