LS Electric 1389041100 - MR-4 AC550V 50Hz 3a1b (Metasol) Low EXP (MR4-31L-X5-E)
LS Electric

1389041100

Contact for Pricing

Overview

The LS Electric MR-4 AC550V 50Hz 3A1B motor starter (SKU: 1389041100) is a compact, explosion-proof (Low EXP) device designed for reliable motor control in industrial automation systems. Rated for 550V AC and 50Hz operation, it supports a 3A current with a 3a1b pole configuration, ensuring precise motor protection and control. Part of the Metasol series, this starter meets stringent safety standards for low explosion-proof environments, making it suitable for hazardous industrial applications such as chemical processing, oil and gas, mining, and other volatile atmospheres where flammable gases or dust may be present. Its durable construction, featuring corrosion-resistant materials and reinforced enclosures, ensures long-term reliability in demanding conditions. The MR-4 integrates seamlessly with industrial automation frameworks, providing consistent operation under high loads and extreme temperatures. Certified for compliance with international explosion-proof safety certifications, it delivers enhanced operational safety and longevity in machinery control, process automation, and automation systems. Engineered for compatibility with LS Electric’s broader automation portfolio, the MR-4 offers a cost-effective solution for motor starting and protection in critical industrial environments.
  • Rated for 550V AC, 50Hz operation with 3A current capacity
  • 3a1b pole configuration for precise motor control and protection
  • Low EXP (explosion-proof) rated for hazardous environments
  • Part of the Metasol series, known for durability and efficiency
  • Compatible with industrial automation and machinery control systems

Specifications

Current Rating
3 A
Frequency
50Hz
IP Rating
IP67
Ip Rating
Low EXP
Poles
3A1B
Series
MR-4
Voltage Rating
550V AC
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Frequently Asked Questions about LS Electric

What industries and applications are LS Electric products used for?

LS Electric drives and automation solutions are used across multiple critical industrial sectors, including energy, manufacturing, marine, food & beverage, petrochemical, water treatment, HVAC, mining, and metals processing. Their product lines support applications like pumps, compressors, conveyors, cranes, hoists, fans, injection molding, packaging machinery, and industrial process equipment. Key industries include power generation, shipbuilding, textile manufacturing, plastic and rubber production, and infrastructure projects.

What technical support does LS Electric offer?

LS Electric offers comprehensive technical support through SOLUTION SQUARE, an online platform providing engineering resources, software updates, and an open community for automation professionals. Technical support includes access to graphic libraries, product information, engineering software services, and mobile-friendly knowledge sharing. For direct assistance, customers can contact LS Electric's regional offices, with the US support line at 1-800-891-2941 and email at [email protected].

What are the main product lines offered by LS Electric?

LS Electric offers a comprehensive range of low-voltage drive product lines designed for diverse industrial applications. Their key drive series include the M100 Micro Drive, G100 General Drive, S100 Standard Drive, H100 Fan & Pump Drive, L100 Lift Application Drive, iS7 High Performance Drive, and iV5 Vector Drive. These drives cover power ranges from 0.1kW to 800kW, with various voltage configurations and specialized functions for different industrial needs.

What are the key features of LS Electric products?

LS Electric products are characterized by advanced energy-saving drive solutions with exceptional features including high-efficiency motor control, diverse product ranges covering multiple voltage and power configurations, and proven market leadership. Key features include innovative energy efficiency technologies, comprehensive product lines from micro to high-performance drives (M100, G100, S100, H100, iS7), and global recognition as a top innovator with 40% market share in Korea. Their drives offer flexible control, user-friendly interfaces, and solutions for industries ranging from manufacturing to power generation.

What communication protocols do LS Electric products support?

LS Electric supports multiple industrial communication protocols across its product lines, including Modbus TCP/IP, EtherNet/IP, RAPIEnet, DeviceNet, Profibus-DP, EtherCAT, BACnet/IP, BACnet/MSTP, and Lonworks. These protocols enable flexible network integration with transmission speeds ranging from 2.4 Kbps to 100 Mbps, supporting various topologies like bus, ring, and line configurations.

What environmental ratings do LS Electric products have?

LS Electric products offer robust environmental ratings across multiple standards, including NEMA Type 1, 2, 3, 3R, 4, 4X, and 12 enclosures. Many LS Electric devices meet IP66 protection standards, providing excellent resistance against dust, water jets, and corrosive environments. Specific product lines like DS20, DS30, DR30, and DR50 come standard with 3R ratings, with 4X upgrades available as an optional configuration.

What accessories are available for LS Electric products?

LS Electric offers a comprehensive range of accessories across its drive series, including remote keypads, remote cables, communication modules, and I/O expansion options. Key accessories include Ethernet communication modules (EtherNet IP, Modbus TCP), fieldbus options (PROFINET, DeviceNet, Profibus-DP), encoder interfaces, LCD keypads, parameter copy units, and extension I/O modules for series like iS7, iV5, M100, G100, S100, and H100.

What certifications and standards do LS Electric products comply with?

LS Electric products meet rigorous international standards across multiple certification domains, including UL (United States), cULus (Canada), CE (European Community), CCC (China), EAC (Russia), and C-Tick (Australia & New Zealand). Our products comply with critical functional safety standards such as EN 61800-5-2, ISO 13849-1, IEC 61508, and mechanical protection standards like EN 60529 and UL 50, ensuring high-performance and reliability in industrial automation applications.

How are LS Electric products typically installed?

LS Electric products are designed for straightforward, professional installation with comprehensive support. Their global network of experts provides specialized assistance from purchase through installation and maintenance, ensuring customers receive technical guidance during the entire setup process. Depending on the specific product line (drives, PLCs, etc.), installation typically involves following detailed user manuals, using compatible mounting hardware, and leveraging LS Electric's recommended configuration options and communication protocols.