MLH Series Moulded Case Circuit Breaker
Economical MCCB for industrial & commercial power and lighting circuits.
- Model Series
- MLH Series
- Product Type
- Moulded Case Circuit Breaker (MCCB)
- Frequency
- AC 50/60Hz
- Rated Working Voltage
- Up to AC 690V / DC 250V
- Application
- Industrial or commercial power and lighting
- Function
- Line conversion (switching); infrequent starting of motors
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Product Details
Service Range
- Advanced breaking performance and various selectivity
- Various product range: 100-800AF, 6 Frames
- Standardized height of products by frame:100-25AF(68mm),400-800AF(110mm)
- Standardized size of accessories
- International standard
Product Parameters
| Rated Insulation Voltage, Ui | 1000V | Suitability for isolation | Yes |
| Rated Operational Voltage, Ue | 690V | Utilization Category | A |
| Impulse Withstand Voltage, Uimp | 8kV | Pollution Degree | 3 |
| Protective Function | Overload, short-circuit and instantaneous protection | Reference Standard | GB 14048.2/IEC 60947-2 |
| Model | MLH125 | |||
| Frame | (AF) | 125 | ||
| Pole | (P) | 2,3,4 | ||
| Rated current, at 40℃ | (A) | 16,20,25,32,40,50,63,75,80,100,125 | ||
| Rated short-circuit breaking capacity[Icu](kA rms) |
Recognition code for order | H | L | |
| AC660/690V | 8 | 10 | ||
| AC480/500V | 26 | 35 | ||
| AC440/460V | 38 | 55 | ||
| AC380/415V | 38 | 55 | ||
| AC220/240V | 85 | 100 | ||
| DC250V(2P) | 20 | 30 | ||
| Service breaking capacity[Ics=%Icu] | 100 | 100 | ||
| Endurance(Durability) | Mechanical | 30000 | ||
| Electrical | 10000 | |||
| Trip device | ||||
| Thermal magnetic | Long time[LT] | Fixed | (1.0)x In | |
| Adjustable | (0.8-0.9-1.0) x In | |||
| Instantaneous[INST] | 16-32A:400A; 40-125A: 10 x In | |||
| Accessory | ||||
| Internal | Auxiliary | AUX | √ | |
| Alarm switch | ALT | √ | ||
| Shunt trip | SHT | √ | ||
| Under voltage trip | UVT | √ | ||
| External | Rotary Handle | Front contact | TFG | √ |
| Extended | TFH | √ | ||
| Motor operator | MOT | √ | ||
| Mechanical interlock | MIF | √ | ||
| Locking device | PLD | √ | ||
| Plug-in | TDM(LINE/LOAD) | √ | ||
| TDM(LINE only) | √ | |||
| TDF(LINE only) | √ | |||
| TDA(1 row) | √ | |||
| TDA(2 row) | √ | |||
| Cage terminal block | CTB | √ | ||
| Insulation terminal cover | TCF | √ | ||
| Insulation barrier | TQQ | √ | ||
| Terminal extentions | TBB | - | ||
| Installation and Dimensions | ||||
| Connection/Installation | Front connection | Terminal screw | ||
| Rear connection | Horizontal/Vertical | |||
| Plug-in | Switchboard type, Distribution board type | |||
| Dimensions(mm) | a(2/3/4P) | 60/90/120 | ||
| b | 155 | |||
| c | 68 | |||
| Weight(kg) | 2/3/4P | 0.8/1.0/1.3 | ||
