LMS1-N 125-630A Automatic Transfer Switch Solenoid type
LMS1-N 125-630A Automatic Transfer Switch Solenoid type
Model Nmae: LMS1-N
Rated Voltage: AC230V,AC400V
Rated Current: 16~630A
Pole: 2P,3P,4P
Product Category: PC Class
Features: 2 Position,needs to be used with a controller
Drive Mode: Solenoid type
Certification: CE,CB,CCC
Standard: IEC 60947-6-1
Model Nmae: LMS1-N
Rated Voltage: AC230V,AC400V
Rated Current: 16~630A
Pole: 2P,3P,4P
Product Category: PC Class
Features: 2 Position,needs to be used with a controller
Drive Mode: Solenoid type
Certification: CE,CB,CCC
Standard: IEC 60947-6-1
1. Product Overview
The LVMA LMS1-N is a solenoid-controlled automatic transfer switch designed for dual-source power systems (mains + generator). Unlike motorized ATS models, this switch uses a fast-acting solenoid mechanism to achieve seamless, reliable power switching, eliminating complex moving motor parts. With ratings from 125A to 630A (2-pole, 3-phase + neutral) for 400V AC systems, it is ideal for low-maintenance commercial and industrial applications requiring continuous power supply for critical loads.
2. Model Description

3. Main Technical Parameters
| Parameter | Details |
|---|---|
| Model | LMS1-N |
| Poles | 4P (3-phase + neutral) |
| Rated Current (In) | 125-630A |
| Rated Operational Voltage (Ue) | AC 400V / 50Hz |
| Rated Insulation Voltage (Ui) | 800V |
| Rated Short-Time Withstand Current | 10kA / 1s (depending on model) |
| Switching Mechanism | Solenoid-driven (no moving motor parts) |
| Control Modes | Automatic, Manual (optional override) |
| Controller Features | Real-time voltage/frequency monitoring, configurable transfer delays, fault alerts |
| Operating Category | AC-33B |
| Mounting Type | Panel mount (compact form factor) |
| Enclosure Rating | IP20 (front face) |
| Compliance Standards | IEC 60947-6-1, GB/T 14048.11 |
| Operating Temperature | -10°C ~ +60°C |
| Mechanical Life | ≥10,000 operations |
4. Structure and Mounting Dimensions




5. Core Features
✅ Solenoid-Driven Fast Switching: Uses a high-speed solenoid mechanism to switch between power sources quickly, ensuring minimal downtime for critical loads.
✅ Low-Maintenance Design: Eliminates complex moving motor parts, reducing the risk of mechanical failure and simplifying long-term maintenance.
✅ Compact Form Factor: Space-saving design suitable for installation in standard distribution panels and ATS cabinets.
✅ Automatic Power Continuity: Detects mains outages and switches to generator power automatically, with configurable transfer delays to match system requirements.
✅ Built-In Safety Interlock: Mechanical interlock prevents simultaneous connection of both power sources, eliminating cross-connection risks.
✅ Robust Construction: Heavy-duty housing and high-quality contacts ensure reliable performance in demanding commercial and industrial environments.
✅ Wide Compatibility: Suitable for use with most three-phase backup generators and mains power sources, supporting diverse backup power configurations.
6. Applications
- Small to medium commercial building backup power systems
- Industrial facility critical load protection
- Telecommunications tower and base station power systems
- Retail and office building emergency power
- Generator rental and portable power units
- Remote site and off-grid power systems
7. Why Choose LVMA Solenoid ATS?
- Fast, Reliable Switching: Solenoid-driven mechanism ensures quick response to power outages, minimizing downtime for critical loads.
- Low Maintenance: No moving motor parts reduce the risk of mechanical failure and simplify maintenance procedures.
- Compact & Space-Saving: Integrated design minimizes panel space usage, making it ideal for installations with limited room.
- Fail-Safe Operation: Mechanical interlock prevents simultaneous mains/generator connection, ensuring safety and compliance.
- Cost-Effective Performance: Solenoid-driven design offers reliable performance at a competitive price point, with lower long-term maintenance costs.
- Compliant & Certified: Meets IEC 60947-6-1 standards, ensuring safety and performance for global commercial and industrial applications.
8. Technical Documents & Support
- Download the full datasheet for detailed specifications, wiring diagrams, and controller configuration instructions.
- Contact our engineering team for custom current ratings or OEM solutions for large-scale ATS projects.
- Request a quote with your project details for bulk pricing, lead times, and compliance certifications.
1. Product Overview
The LVMA LMS1-N is a solenoid-controlled automatic transfer switch designed for dual-source power systems (mains + generator). Unlike motorized ATS models, this switch uses a fast-acting solenoid mechanism to achieve seamless, reliable power switching, eliminating complex moving motor parts. With ratings from 125A to 630A (2-pole, 3-phase + neutral) for 400V AC systems, it is ideal for low-maintenance commercial and industrial applications requiring continuous power supply for critical loads.
2. Model Description

3. Main Technical Parameters
| Parameter | Details |
|---|---|
| Model | LMS1-N |
| Poles | 4P (3-phase + neutral) |
| Rated Current (In) | 125-630A |
| Rated Operational Voltage (Ue) | AC 400V / 50Hz |
| Rated Insulation Voltage (Ui) | 800V |
| Rated Short-Time Withstand Current | 10kA / 1s (depending on model) |
| Switching Mechanism | Solenoid-driven (no moving motor parts) |
| Control Modes | Automatic, Manual (optional override) |
| Controller Features | Real-time voltage/frequency monitoring, configurable transfer delays, fault alerts |
| Operating Category | AC-33B |
| Mounting Type | Panel mount (compact form factor) |
| Enclosure Rating | IP20 (front face) |
| Compliance Standards | IEC 60947-6-1, GB/T 14048.11 |
| Operating Temperature | -10°C ~ +60°C |
| Mechanical Life | ≥10,000 operations |
4. Structure and Mounting Dimensions




5. Core Features
✅ Solenoid-Driven Fast Switching: Uses a high-speed solenoid mechanism to switch between power sources quickly, ensuring minimal downtime for critical loads.
✅ Low-Maintenance Design: Eliminates complex moving motor parts, reducing the risk of mechanical failure and simplifying long-term maintenance.
✅ Compact Form Factor: Space-saving design suitable for installation in standard distribution panels and ATS cabinets.
✅ Automatic Power Continuity: Detects mains outages and switches to generator power automatically, with configurable transfer delays to match system requirements.
✅ Built-In Safety Interlock: Mechanical interlock prevents simultaneous connection of both power sources, eliminating cross-connection risks.
✅ Robust Construction: Heavy-duty housing and high-quality contacts ensure reliable performance in demanding commercial and industrial environments.
✅ Wide Compatibility: Suitable for use with most three-phase backup generators and mains power sources, supporting diverse backup power configurations.
6. Applications
- Small to medium commercial building backup power systems
- Industrial facility critical load protection
- Telecommunications tower and base station power systems
- Retail and office building emergency power
- Generator rental and portable power units
- Remote site and off-grid power systems
7. Why Choose LVMA Solenoid ATS?
- Fast, Reliable Switching: Solenoid-driven mechanism ensures quick response to power outages, minimizing downtime for critical loads.
- Low Maintenance: No moving motor parts reduce the risk of mechanical failure and simplify maintenance procedures.
- Compact & Space-Saving: Integrated design minimizes panel space usage, making it ideal for installations with limited room.
- Fail-Safe Operation: Mechanical interlock prevents simultaneous mains/generator connection, ensuring safety and compliance.
- Cost-Effective Performance: Solenoid-driven design offers reliable performance at a competitive price point, with lower long-term maintenance costs.
- Compliant & Certified: Meets IEC 60947-6-1 standards, ensuring safety and performance for global commercial and industrial applications.
8. Technical Documents & Support
- Download the full datasheet for detailed specifications, wiring diagrams, and controller configuration instructions.
- Contact our engineering team for custom current ratings or OEM solutions for large-scale ATS projects.
- Request a quote with your project details for bulk pricing, lead times, and compliance certifications.
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