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LMS1-LA3 Series ATS 630A - Reliable Automatic Transfer Switch from China Suppliers and Factory
LMS1-LA Series Manual
LMS1-LA as our ingenuity research and development of a new generation of dual power automatic transfer switch, in the performance and technology to achieve a major breakthrough. The product provides 63A, 125A, 250A, 400A, 630A and other rated current specifications, whether it is the continuous operation of massive servers in data centers, or the uninterrupted power supply of life support equipment in hospital ICU wards, the stable operation of elevator and fire fighting system in high-rise buildings can fully meet the power demand in different scenarios.
Its switching speed can be called industry-leading, switching time only 10ms-50ms, with millisecond response speed to complete power conversion. In the data center, the LMS1-LA automatic transfer switch can switch to the standby power supply in a very short period of time in the face of sudden power failure, avoiding data loss and system collapse caused by momentary power failure; in the hospital environment, the LMS1-LA automatic transfer switch can switch to the standby power supply in a very short period of time, millisecond-level power switching can guarantee the stable operation of precision instruments and first-aid equipment in operating rooms, and escort the safety of patients. When applied to high-rise buildings, fast power changeover ensures smooth parking of elevators, normal operation of fire fighting systems and improved building Factor of safety.
The transfer switch is composed of a high performance excitation contactor and an intelligent controller. When working, the electromagnetic coil produces a strong and stable attraction to drive the switching action to ensure the instant completion of power switching. This feature not only effectively guarantees the rapid switching of the power supply when the equipment is powered off, but also realizes the seamless connection of the power supply, which provides a reliable and solid power guarantee for the equipment with strict requirements for power continuity.
LMS1-LA3 is a PC-level dual power automatic transfer switch, the current specification covers 16A–630A, there are two types of 3P and 4P, the use of isolated switch type structure with motor drive body, for one two-stage design, with good electrical isolation performance, can ensure the safety and reliability when switching power supply.
Model Description
Main Technical Parameters
| Model Name | LMS1-63LA3 | LMS1-125LA3 | LMS1-250LA3 | LMS1-630LA3 | |||||||||
| Rated insulation voltage (Ui) | AC 690V | ||||||||||||
| Rated working voltage (Ue) | AC 400V | ||||||||||||
| Rated working current (Ie) | 16~63A | 20~125A | 160~250A | 315~630A | |||||||||
| Rated concussion withstand voltage (Uimp) | 8kV | ||||||||||||
| Using category | AC-33iB | ||||||||||||
| Kind of throw | Double throw | ||||||||||||
| Wiring method | Front board | ||||||||||||
| Poles | 2P | 3P | 4P | 2P | 3P | 4P | 2P | 3P | 4P | 2P | 3P | 4P | |
| Performance | Short-time resistance current | 5kA | 10kA | 12.6kA | |||||||||
| Through to breaking capacity | 10Ie | 6Ie | 6Ie | ||||||||||
| Electrical Life / Mechanical Life | 6000 / 20000 | 1000 / 4000 | |||||||||||
- Start generator: When fault occurs in the normal power, this port will connect after delaying some time.
- Normal close: When the normal power of ATS is in closing state, closing signal without power is output from this port.
- Standby close: When the standby power of ATS is in closing state, closing signal without power is output from this port.
- Normal earth wire: When ATS are 3 phases, the normal earth wire is connected into this port.
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Standby earth wire: When ATS are 3 phases, the standby earth wire is connected into this port.
Remark: The normal earth wire and standby earth wire is just suitable for ATS of 3 phases.
Communication Port Description
- 485A and 485B: RS485 communication terminal
- Communication protocol parameters, module address: 1 (range: 1–32, user can set)
- Baud rate: 9600bps
- Data bits: 8 bits
- Parity bit: None
Note: NC is reserved for undefined ports, users are not allowed to connect.
Structure and Mounting Dimensions
Frequently Asked Questions (FAQ)
What is the LMS1-LA3 automatic transfer switch used for?
The LMS1-LA3 is a PC-level dual power automatic transfer switch designed to automatically switch between normal and standby power supplies in the event of a power failure, ensuring continuous and reliable power delivery to critical loads.
What current ratings are available for the LMS1-LA3 series?
The LMS1-LA3 series covers a current range from 16A to 630A, including models LMS1-63LA3 (16–63A), LMS1-125LA3 (20–125A), LMS1-250LA3 (160–250A), and LMS1-630LA3 (315–630A).
What pole configurations are available for the LMS1-LA3?
The LMS1-LA3 is available in 2P, 3P, and 4P configurations across all current rating models, allowing flexible installation for single-phase, three-phase, and neutral-included applications.
Does the LMS1-LA3 support RS485 communication?
Yes, the LMS1-LA3 features RS485 communication terminals (485A and 485B). The default module address is 1 (adjustable from 1 to 32), with a baud rate of 9600bps, 8 data bits, and no parity bit.
What is the electrical and mechanical life expectancy of the LMS1-LA3?
For the LMS1-63LA3, LMS1-125LA3, and LMS1-250LA3 models, the electrical life is 6,000 operations and the mechanical life is 20,000 operations. For the LMS1-630LA3 model, the electrical life is 1,000 operations and the mechanical life is 4,000 operations.
What is the rated insulation voltage and working voltage of the LMS1-LA3?
The LMS1-LA3 has a rated insulation voltage (Ui) of AC 690V and a rated working voltage (Ue) of AC 400V, making it suitable for standard industrial and commercial power systems.