LMGL3D DC Disconnect Switch
LMGL3D DC Disconnect Switch
Model Number：LMGL3D
Poles：2P (2-Pole)
Rated Operational Current (Ie)：630A DC
Rated Operational Voltage (Ue)：1000VDC / 1500VDC
Rated Impulse Withstand Voltage (Uimp)：8kV
Rated Short-Time Withstand Current (Icw)：65kA (for 1s, with appropriate back-up protection)
Breaking Capacity：20kA at 1000VDC / 1500VDC
Mechanical Life：≥10,000 operations
Electrical Life：≥2,000 operations at rated load
Enclosure Material：Flame-retardant engineering plastic (UL94 V-0)
Operating Temperature：-40°C ~ +85°C
Mounting Type：DIN Rail / Panel Mount (with adapter)
Certifications：IEC 60947-1, IEC 60947-3, CE, CCC
Model Number：LMGL3D
Poles：2P (2-Pole)
Rated Operational Current (Ie)：630A DC
Rated Operational Voltage (Ue)：1000VDC / 1500VDC
Rated Impulse Withstand Voltage (Uimp)：8kV
Rated Short-Time Withstand Current (Icw)：65kA (for 1s, with appropriate back-up protection)
Breaking Capacity：20kA at 1000VDC / 1500VDC
Mechanical Life：≥10,000 operations
Electrical Life：≥2,000 operations at rated load
Enclosure Material：Flame-retardant engineering plastic (UL94 V-0)
Operating Temperature：-40°C ~ +85°C
Mounting Type：DIN Rail / Panel Mount (with adapter)
Certifications：IEC 60947-1, IEC 60947-3, CE, CCC
The DC LMGL3D Disconnect Switch is a high-performance 2-pole, 630A rated DC isolator designed for solar PV systems, battery energy storage, and industrial DC power applications. Built to meet IEC 60947-3 safety standards, this load-break switch provides reliable disconnection, isolation, and maintenance safety for 1000VDC/1500VDC systems.
✨ Key Features & Benefits
| Feature | Benefit |
|---|---|
| 630A Continuous Current Rating | Handles high DC loads in large-scale solar farms, battery banks, and industrial setups without overheating. |
| 1000VDC/1500VDC Rated Voltage | Compatible with modern high-voltage PV arrays and energy storage systems, supporting both 1000V and 1500V DC networks. |
| Clear Isolation Point with Visible Contact Gap | Complies with NEC and IEC safety requirements, allowing visual confirmation of circuit disconnection for maintenance. |
| Robust Load-Breaking Capacity | Safely switches under load conditions (up to 630A DC), eliminating the need for additional external breakers in many applications. |
| IP20/IP65 (Optional) Enclosure | Durable, flame-retardant housing with optional weatherproofing for outdoor and harsh industrial environments. |
| Ergonomic Front Operation Handle | Red/black on/off handle for clear status indication, with mechanical interlock to prevent accidental operation. |
| IEC/CE/CCC Certified | Meets global safety standards for low-voltage switchgear, ensuring compliance for international projects. |
| Long Mechanical/Electrical Life | Rated for 10,000+ mechanical operations and 2,000+ electrical operations, ideal for frequent use in renewable energy systems. |
📋 Technical Specifications
| Parameter | Details |
|---|---|
| Model Number | LMGL3D |
| Poles | 2P (2-Pole) |
| Rated Operational Current (Ie) | 630A DC |
| Rated Operational Voltage (Ue) | 1000VDC / 1500VDC |
| Rated Impulse Withstand Voltage (Uimp) | 8kV |
| Rated Short-Time Withstand Current (Icw) | 65kA (for 1s, with appropriate back-up protection) |
| Breaking Capacity | 20kA at 1000VDC / 1500VDC |
| Mechanical Life | ≥10,000 operations |
| Electrical Life | ≥2,000 operations at rated load |
| Enclosure Material | Flame-retardant engineering plastic (UL94 V-0) |
| Operating Temperature | -40°C ~ +85°C |
| Mounting Type | DIN Rail / Panel Mount (with adapter) |
| Certifications | IEC 60947-1, IEC 60947-3, CE, CCC |
📌 Applications
The LVMA LMGL3D-630/2P DC disconnect switch is ideal for a wide range of high-power DC applications:
- Solar PV Power Plants: String-level and combiner box disconnection for large-scale 1000V/1500V solar arrays.
- Battery Energy Storage Systems (BESS): Main DC isolation for lithium-ion battery banks, enabling safe maintenance and emergency shutdown.
- Industrial DC Power Systems: Heavy-duty DC distribution in mining, telecom, and manufacturing facilities.
- EV Charging Infrastructure: DC fast charger disconnection for safe servicing and troubleshooting.
- Off-Grid Power Systems: Standalone solar/wind power installations requiring reliable DC isolation.
🔧 Installation & Operation
- Mounting: The switch supports standard DIN rail mounting or panel mounting with optional brackets, fitting seamlessly into most electrical enclosures.
- Wiring: The large copper busbar terminals accommodate thick-gauge DC cables, ensuring low-resistance connections for high current loads.
- Operation: The red/black handle provides clear ON/OFF status. The “I ON” position indicates the circuit is closed, while the “O” position creates a visible isolation gap for safety.
- Safety Notes: Always verify the system is de-energized before maintenance. The switch must be operated under rated load conditions to avoid damage to contacts.
❓ Frequently Asked Questions (FAQ)
Q1: What is the difference between a disconnect switch and a circuit breaker?
A disconnect switch (isolator) is designed for visible circuit isolation during maintenance, while a circuit breaker provides overcurrent protection. The LMG1D-315/2P can break load currents, making it suitable for both isolation and controlled switching, but it does not include short-circuit protection. Pair it with DC fuses or breakers for full system safety.
Q2: Can this switch be used with 1500VDC solar systems?
Yes, the LMGL3D-630/2P is rated for both 1000VDC and 1500VDC, making it compatible with modern high-voltage PV arrays. Always confirm your system’s maximum open-circuit voltage matches the switch rating.
Q3: Is the switch suitable for outdoor installation?
The standard model has an IP20 rating for indoor use. We offer optional IP65 weatherproof enclosures for outdoor applications, protecting against dust, rain, and UV exposure.
Q4: What certifications does this switch have?
The LMGL3D-630/2P is certified to IEC 60947-1/-3 standards, with CE and CCC approvals, ensuring compliance with global electrical safety regulations for renewable energy and industrial use.
7. Technical Documentation & Support
Download full datasheets including complete specs, wiring schematics and selection guides.
Reach out to our technical team for project-specific customization and OEM/ODM service.
Submit a project inquiry to receive bulk pricing, production lead times and relevant compliance certificates.
The DC LMGL3D Disconnect Switch is a high-performance 2-pole, 630A rated DC isolator designed for solar PV systems, battery energy storage, and industrial DC power applications. Built to meet IEC 60947-3 safety standards, this load-break switch provides reliable disconnection, isolation, and maintenance safety for 1000VDC/1500VDC systems.
✨ Key Features & Benefits
| Feature | Benefit |
|---|---|
| 630A Continuous Current Rating | Handles high DC loads in large-scale solar farms, battery banks, and industrial setups without overheating. |
| 1000VDC/1500VDC Rated Voltage | Compatible with modern high-voltage PV arrays and energy storage systems, supporting both 1000V and 1500V DC networks. |
| Clear Isolation Point with Visible Contact Gap | Complies with NEC and IEC safety requirements, allowing visual confirmation of circuit disconnection for maintenance. |
| Robust Load-Breaking Capacity | Safely switches under load conditions (up to 630A DC), eliminating the need for additional external breakers in many applications. |
| IP20/IP65 (Optional) Enclosure | Durable, flame-retardant housing with optional weatherproofing for outdoor and harsh industrial environments. |
| Ergonomic Front Operation Handle | Red/black on/off handle for clear status indication, with mechanical interlock to prevent accidental operation. |
| IEC/CE/CCC Certified | Meets global safety standards for low-voltage switchgear, ensuring compliance for international projects. |
| Long Mechanical/Electrical Life | Rated for 10,000+ mechanical operations and 2,000+ electrical operations, ideal for frequent use in renewable energy systems. |
📋 Technical Specifications
| Parameter | Details |
|---|---|
| Model Number | LMGL3D |
| Poles | 2P (2-Pole) |
| Rated Operational Current (Ie) | 630A DC |
| Rated Operational Voltage (Ue) | 1000VDC / 1500VDC |
| Rated Impulse Withstand Voltage (Uimp) | 8kV |
| Rated Short-Time Withstand Current (Icw) | 65kA (for 1s, with appropriate back-up protection) |
| Breaking Capacity | 20kA at 1000VDC / 1500VDC |
| Mechanical Life | ≥10,000 operations |
| Electrical Life | ≥2,000 operations at rated load |
| Enclosure Material | Flame-retardant engineering plastic (UL94 V-0) |
| Operating Temperature | -40°C ~ +85°C |
| Mounting Type | DIN Rail / Panel Mount (with adapter) |
| Certifications | IEC 60947-1, IEC 60947-3, CE, CCC |
📌 Applications
The LVMA LMGL3D-630/2P DC disconnect switch is ideal for a wide range of high-power DC applications:
- Solar PV Power Plants: String-level and combiner box disconnection for large-scale 1000V/1500V solar arrays.
- Battery Energy Storage Systems (BESS): Main DC isolation for lithium-ion battery banks, enabling safe maintenance and emergency shutdown.
- Industrial DC Power Systems: Heavy-duty DC distribution in mining, telecom, and manufacturing facilities.
- EV Charging Infrastructure: DC fast charger disconnection for safe servicing and troubleshooting.
- Off-Grid Power Systems: Standalone solar/wind power installations requiring reliable DC isolation.
🔧 Installation & Operation
- Mounting: The switch supports standard DIN rail mounting or panel mounting with optional brackets, fitting seamlessly into most electrical enclosures.
- Wiring: The large copper busbar terminals accommodate thick-gauge DC cables, ensuring low-resistance connections for high current loads.
- Operation: The red/black handle provides clear ON/OFF status. The “I ON” position indicates the circuit is closed, while the “O” position creates a visible isolation gap for safety.
- Safety Notes: Always verify the system is de-energized before maintenance. The switch must be operated under rated load conditions to avoid damage to contacts.
❓ Frequently Asked Questions (FAQ)
Q1: What is the difference between a disconnect switch and a circuit breaker?
A disconnect switch (isolator) is designed for visible circuit isolation during maintenance, while a circuit breaker provides overcurrent protection. The LMG1D-315/2P can break load currents, making it suitable for both isolation and controlled switching, but it does not include short-circuit protection. Pair it with DC fuses or breakers for full system safety.
Q2: Can this switch be used with 1500VDC solar systems?
Yes, the LMGL3D-630/2P is rated for both 1000VDC and 1500VDC, making it compatible with modern high-voltage PV arrays. Always confirm your system’s maximum open-circuit voltage matches the switch rating.
Q3: Is the switch suitable for outdoor installation?
The standard model has an IP20 rating for indoor use. We offer optional IP65 weatherproof enclosures for outdoor applications, protecting against dust, rain, and UV exposure.
Q4: What certifications does this switch have?
The LMGL3D-630/2P is certified to IEC 60947-1/-3 standards, with CE and CCC approvals, ensuring compliance with global electrical safety regulations for renewable energy and industrial use.
7. Technical Documentation & Support
Download full datasheets including complete specs, wiring schematics and selection guides.
Reach out to our technical team for project-specific customization and OEM/ODM service.
Submit a project inquiry to receive bulk pricing, production lead times and relevant compliance certificates.
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