LMM1L 4P 63-1250A Earth Leakage MCCB ELCB 400V
LMM1L 4P 63-1250A Earth Leakage MCCB ELCB 400V
Leakage moulded case circuit breaker (commonly referred to as leakage MCCB) is a kind of electrical switchgear with plastic shell as the protective carrier, which integrates three core functions of“Leakage protection + overload protection + short circuit protection”. Compared with small residual-current device, it has larger rated current (10A-1600A) , stronger breaking capacity, and can adapt to medium and high power circuit scenarios;
- Model Name: LMM1L
- Rated Current: 63,125,250,400,630,800,1250,1600
- Rated Voltage :230,415,500,690
- Rated Residual Current (IΔn):Adjustable: 100mA / 300mA / 500mA
- Poles:2P,3P,4P
- Rated Insulation Voltage:1000V
- Standard:IEC60947-2
Leakage moulded case circuit breaker (commonly referred to as leakage MCCB) is a kind of electrical switchgear with plastic shell as the protective carrier, which integrates three core functions of“Leakage protection + overload protection + short circuit protection”. Compared with small residual-current device, it has larger rated current (10A-1600A) , stronger breaking capacity, and can adapt to medium and high power circuit scenarios;
- Model Name: LMM1L
- Rated Current: 63,125,250,400,630,800,1250,1600
- Rated Voltage :230,415,500,690
- Rated Residual Current (IΔn):Adjustable: 100mA / 300mA / 500mA
- Poles:2P,3P,4P
- Rated Insulation Voltage:1000V
- Standard:IEC60947-2
1. Product Overview
2. Key Specifications
| Parameter | Details |
|---|---|
| Model | LMM1L |
| Poles | 4P (3-phase + neutral) |
| Rated Operational Voltage (Ue) | AC 400V / 50Hz |
| Rated Insulation Voltage (Ui) | AC 690V |
| Rated Current (In) | 63-1250A |
| Rated Residual Current (IΔn) | Adjustable: 100mA / 300mA / 500mA |
| Residual Current Trip Time | Adjustable: 0.1s / 0.3s / 0.5s |
| Breaking Capacity (Icu) | 35kA (at 400V) |
| Protection Functions | Residual current (earth leakage), Overload, Short-circuit |
| Trip Type | Combined thermal-magnetic + residual current |
| Mounting Type | Panel mount |
| Enclosure Rating | IP20 (front face) |
| Compliance Standards | IEC 60947-2, IEC 60947-3, GB/T 14048.2 |
| Operating Temperature | -10°C ~ +60°C |
| Mechanical Life | ≥8,000 operations |
| Electrical Life | ≥1,500 operations at rated load |
3. Core Features
✅ All-in-One Protection: Combines residual current (ELCB), overload, and short-circuit protection in a single 4-pole MCCB, eliminating the need for separate devices.
✅ Adjustable Leakage Settings: Selectable residual current (100/300/500mA) and time-delay (0.1/0.3/0.5s) for custom safety coordination.
✅ 3P+N Design: Full 4-pole protection including the neutral line, suitable for balanced and unbalanced three-phase systems.
✅ Test & Reset Functions: Built-in test button verifies residual current functionality, with manual reset after trip events.
✅ Visual Status Indicators: LEDs indicate power status, leakage trip, and fault conditions for quick diagnostics.
✅ Robust Molded Case: Flame-retardant, impact-resistant plastic housing (UL94 V-0) provides excellent durability and electrical insulation.
✅ High Breaking Capacity: 35kA short-circuit withstand at 400V ensures system stability during severe fault conditions.
✅ Large Terminal Connections: Oversized terminals accommodate high-current cables, ensuring secure and low-resistance connections.
4. Applications
- Commercial building main distribution panels
- Industrial facility three-phase power systems
- Construction site temporary power distribution
- Generator and backup power systems
- Data center and server room electrical safety
- Agricultural and farm power distribution systems
- Solar and wind power plant AC-side circuits
5. Why Choose LVMA LMM1L Earth Leakage MCCB ?
- Comprehensive Safety: All-in-one protection against leakage, overload, and short-circuit, meeting global electrical safety codes.
- Flexible Adjustability: Customizable leakage sensitivity and time-delay settings for tailored protection coordination.
- Cost & Space Efficient: Replaces multiple separate devices, reducing panel space and installation costs.
- Reliable Performance: Compliant with IEC standards, with rigorous testing to ensure consistent operation in demanding environments.
- Easy Maintenance: Built-in test function and visual indicators simplify periodic safety checks and troubleshooting.
6. Technical Documents & Support
- Download the full datasheet for detailed specifications, wiring diagrams, and installation instructions.
- Contact our engineering team for custom leakage settings or OEM/ODM solutions for large-scale projects.
- Request a quote with your project details for bulk pricing, lead times, and compliance certifications.
1. Product Overview
2. Key Specifications
| Parameter | Details |
|---|---|
| Model | LMM1L |
| Poles | 4P (3-phase + neutral) |
| Rated Operational Voltage (Ue) | AC 400V / 50Hz |
| Rated Insulation Voltage (Ui) | AC 690V |
| Rated Current (In) | 63-1250A |
| Rated Residual Current (IΔn) | Adjustable: 100mA / 300mA / 500mA |
| Residual Current Trip Time | Adjustable: 0.1s / 0.3s / 0.5s |
| Breaking Capacity (Icu) | 35kA (at 400V) |
| Protection Functions | Residual current (earth leakage), Overload, Short-circuit |
| Trip Type | Combined thermal-magnetic + residual current |
| Mounting Type | Panel mount |
| Enclosure Rating | IP20 (front face) |
| Compliance Standards | IEC 60947-2, IEC 60947-3, GB/T 14048.2 |
| Operating Temperature | -10°C ~ +60°C |
| Mechanical Life | ≥8,000 operations |
| Electrical Life | ≥1,500 operations at rated load |
3. Core Features
✅ All-in-One Protection: Combines residual current (ELCB), overload, and short-circuit protection in a single 4-pole MCCB, eliminating the need for separate devices.
✅ Adjustable Leakage Settings: Selectable residual current (100/300/500mA) and time-delay (0.1/0.3/0.5s) for custom safety coordination.
✅ 3P+N Design: Full 4-pole protection including the neutral line, suitable for balanced and unbalanced three-phase systems.
✅ Test & Reset Functions: Built-in test button verifies residual current functionality, with manual reset after trip events.
✅ Visual Status Indicators: LEDs indicate power status, leakage trip, and fault conditions for quick diagnostics.
✅ Robust Molded Case: Flame-retardant, impact-resistant plastic housing (UL94 V-0) provides excellent durability and electrical insulation.
✅ High Breaking Capacity: 35kA short-circuit withstand at 400V ensures system stability during severe fault conditions.
✅ Large Terminal Connections: Oversized terminals accommodate high-current cables, ensuring secure and low-resistance connections.
4. Applications
- Commercial building main distribution panels
- Industrial facility three-phase power systems
- Construction site temporary power distribution
- Generator and backup power systems
- Data center and server room electrical safety
- Agricultural and farm power distribution systems
- Solar and wind power plant AC-side circuits
5. Why Choose LVMA LMM1L Earth Leakage MCCB ?
- Comprehensive Safety: All-in-one protection against leakage, overload, and short-circuit, meeting global electrical safety codes.
- Flexible Adjustability: Customizable leakage sensitivity and time-delay settings for tailored protection coordination.
- Cost & Space Efficient: Replaces multiple separate devices, reducing panel space and installation costs.
- Reliable Performance: Compliant with IEC standards, with rigorous testing to ensure consistent operation in demanding environments.
- Easy Maintenance: Built-in test function and visual indicators simplify periodic safety checks and troubleshooting.
6. Technical Documents & Support
- Download the full datasheet for detailed specifications, wiring diagrams, and installation instructions.
- Contact our engineering team for custom leakage settings or OEM/ODM solutions for large-scale projects.
- Request a quote with your project details for bulk pricing, lead times, and compliance certifications.
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