LVMA | New Products – LMS2-GN1 Reliable Power Continuity for Critical Applications

Product Overview: Reliable Power Continuity for Critical Applications

The LVMA LMS2-125GN1 Automatic Transfer Switch (ATS) is a high-performance PC-level power switching solution engineered to ensure uninterrupted power supply for residential, commercial, and industrial systems. Designed for 4P 125A 400V applications, this ATS automatically transfers loads between two independent power sources (main and backup/generator) within milliseconds, eliminating costly downtime caused by power outages, voltage fluctuations, or grid failures. Built with LVMA’s signature precision engineering and certified for safety, it is ideal for mission-critical systems including data centers, medical facilities, industrial machinery, and smart homes.
125A Automatic Transfer Switch ATS-125A-4P

Key Features & Benefits

Seamless Automatic Power Transfer

With a transfer time of ≤2 seconds, the LMS2-125GN1 instantly switches to backup power when the primary supply fails, protecting sensitive equipment from data loss, damage, or operational interruptions. Supports both automatic and manual modes for flexible operation, with clear LED indicators for power status and switching progress.

PC-Level Safety & Durability

Constructed with high-quality silver-alloy contacts and a robust, flame-retardant housing, this ATS delivers exceptional conductivity, arc resistance, and long-term reliability. It features open-circuit conversion technology to prevent short circuits during switching, meeting IEC/EN standards and certified with CE and RoHS compliance for global use.

Comprehensive Protection

Equipped with overload, short-circuit, and over/under voltage protection, the LMS2-125GN1 safeguards both the power source and connected loads. The 10kA breaking capacity ensures reliable fault interruption, while the 4P pole configuration supports single-phase and three-phase systems with neutral switching for complete electrical safety.

User-Friendly Design

The transparent terminal covers and clearly labeled N poles simplify installation and maintenance. A dedicated ON/OFF switch and manual override function allow technicians to test or operate the switch during emergencies, making it suitable for both new installations and retrofits.

Versatile Compatibility

Rated for AC230/400V 50Hz systems, the LMS2-125GN1 works seamlessly with generators, solar power systems, and utility grids. Its compact, DIN-rail mountable design saves space in distribution panels, supporting easy integration into existing electrical setups.


Technical Specification

Frame class 63 125 250 400 800
Rated current Ie(A) 16, 20, 25, 32, 40, 50, 63 80, 100, 125 160, 200, 225, 250 315, 350, 400 630, 800
Rated insulation voltage Ui 800V 800V 800V 1000V 1000V
Control voltage Us AC230V 50Hz
Rated impulse withstand voltage Uimp 8kV 8kV 8kV 12kV 12kV
Rated working voltage Ue AC400V 50Hz
Using category AC-33B AC-33B AC-33B AC-33iB AC-33iB
Rated short-circuit making capacity Icm 7.65kA 17kA 17kA 17kA 32kA
Rated short-time withstand current Icw 5kA/30ms 10kA/30ms 10kA/60ms 10kA/60ms 16kA/60ms
Transfer Time <2s (all frame classes)
Protection level IP20 (except for terminals) (all frame classes)

Common Applications

  • Industrial Facilities: Protect production lines, motors, and control systems from power disruptions.
  • Commercial Buildings: Ensure continuous power for lighting, elevators, and HVAC systems.
  • Data Centers & IT Infrastructure: Prevent server downtime and data loss during outages.
  • Medical & Healthcare: Maintain life support systems and medical equipment operation.
  • Residential & Smart Homes: Support backup generators and solar power systems for uninterrupted household power.
  • Telecommunications: Keep base stations and network equipment operational at all times.

Why Choose LVMA ATS?

As a leading manufacturer of low-voltage electrical components, LVMA delivers reliable, cost-effective ATS solutions with strict quality control and global certifications. The LMS2-125GN1 is backed by:
  • Factory direct pricing and OEM/ODM customization options
  • 2-year warranty with responsive technical support
  • Compliance with international safety standards (IEC 60947-6-1)
  • A proven track record in over 30 countries across Europe, Asia, and the Middle East

Get Started Today

Protect your critical systems from power failures with the LVMA LMS2-125GN1 ATS. Contact our team for bulk pricing, custom configurations, or technical support to find the perfect ATS solution for your project.
Published On: 2026-06-11

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LVMA | New Products – LMS2-GN1 Reliable Power Continuity for Critical Applications

Product Overview: Reliable Power Continuity for Critical Applications

The LVMA LMS2-125GN1 Automatic Transfer Switch (ATS) is a high-performance PC-level power switching solution engineered to ensure uninterrupted power supply for residential, commercial, and industrial systems. Designed for 4P 125A 400V applications, this ATS automatically transfers loads between two independent power sources (main and backup/generator) within milliseconds, eliminating costly downtime caused by power outages, voltage fluctuations, or grid failures. Built with LVMA’s signature precision engineering and certified for safety, it is ideal for mission-critical systems including data centers, medical facilities, industrial machinery, and smart homes.
125A Automatic Transfer Switch ATS-125A-4P

Key Features & Benefits

Seamless Automatic Power Transfer

With a transfer time of ≤2 seconds, the LMS2-125GN1 instantly switches to backup power when the primary supply fails, protecting sensitive equipment from data loss, damage, or operational interruptions. Supports both automatic and manual modes for flexible operation, with clear LED indicators for power status and switching progress.

PC-Level Safety & Durability

Constructed with high-quality silver-alloy contacts and a robust, flame-retardant housing, this ATS delivers exceptional conductivity, arc resistance, and long-term reliability. It features open-circuit conversion technology to prevent short circuits during switching, meeting IEC/EN standards and certified with CE and RoHS compliance for global use.

Comprehensive Protection

Equipped with overload, short-circuit, and over/under voltage protection, the LMS2-125GN1 safeguards both the power source and connected loads. The 10kA breaking capacity ensures reliable fault interruption, while the 4P pole configuration supports single-phase and three-phase systems with neutral switching for complete electrical safety.

User-Friendly Design

The transparent terminal covers and clearly labeled N poles simplify installation and maintenance. A dedicated ON/OFF switch and manual override function allow technicians to test or operate the switch during emergencies, making it suitable for both new installations and retrofits.

Versatile Compatibility

Rated for AC230/400V 50Hz systems, the LMS2-125GN1 works seamlessly with generators, solar power systems, and utility grids. Its compact, DIN-rail mountable design saves space in distribution panels, supporting easy integration into existing electrical setups.


Technical Specification

Frame class 63 125 250 400 800
Rated current Ie(A) 16, 20, 25, 32, 40, 50, 63 80, 100, 125 160, 200, 225, 250 315, 350, 400 630, 800
Rated insulation voltage Ui 800V 800V 800V 1000V 1000V
Control voltage Us AC230V 50Hz
Rated impulse withstand voltage Uimp 8kV 8kV 8kV 12kV 12kV
Rated working voltage Ue AC400V 50Hz
Using category AC-33B AC-33B AC-33B AC-33iB AC-33iB
Rated short-circuit making capacity Icm 7.65kA 17kA 17kA 17kA 32kA
Rated short-time withstand current Icw 5kA/30ms 10kA/30ms 10kA/60ms 10kA/60ms 16kA/60ms
Transfer Time <2s (all frame classes)
Protection level IP20 (except for terminals) (all frame classes)

Common Applications

  • Industrial Facilities: Protect production lines, motors, and control systems from power disruptions.
  • Commercial Buildings: Ensure continuous power for lighting, elevators, and HVAC systems.
  • Data Centers & IT Infrastructure: Prevent server downtime and data loss during outages.
  • Medical & Healthcare: Maintain life support systems and medical equipment operation.
  • Residential & Smart Homes: Support backup generators and solar power systems for uninterrupted household power.
  • Telecommunications: Keep base stations and network equipment operational at all times.

Why Choose LVMA ATS?

As a leading manufacturer of low-voltage electrical components, LVMA delivers reliable, cost-effective ATS solutions with strict quality control and global certifications. The LMS2-125GN1 is backed by:
  • Factory direct pricing and OEM/ODM customization options
  • 2-year warranty with responsive technical support
  • Compliance with international safety standards (IEC 60947-6-1)
  • A proven track record in over 30 countries across Europe, Asia, and the Middle East

Get Started Today

Protect your critical systems from power failures with the LVMA LMS2-125GN1 ATS. Contact our team for bulk pricing, custom configurations, or technical support to find the perfect ATS solution for your project.

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