Littelfuse EL731-14-00 - EL731-14-00 is an earth-leakage relay with a supply voltage ac of 24 and a supply voltage dc of 48. Communications is offered via Modbus®TCP.
Littelfuse

EL731-14-00

Alternate Item Number: EL731-14-00

UPC: 079458977837


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Overview

The Littelfuse EL731-14-00 Earth-Leakage Relay is a critical component for ensuring electrical safety and operational integrity in demanding industrial environments. Engineered by Littelfuse, a globally recognized leader in circuit protection, this relay provides advanced detection of ground faults, safeguarding personnel and sensitive equipment from the hazards associated with electrical leakage. Designed for versatility, the EL731-14-00 features a dual supply voltage capability, accepting either 24VAC or 48VDC. This flexibility simplifies integration into a wide array of existing power distribution systems and new installations, reducing the need for voltage converters and streamlining project planning. Its robust construction ensures reliable performance even under harsh industrial conditions, making it a dependable choice for applications where uptime and safety are paramount. A standout feature of the EL731-14-00 is its integrated Modbus®TCP communication protocol. This enables seamless connectivity with modern industrial automation systems, SCADA networks, and Programmable Logic Controllers (PLCs). Through Modbus®TCP, users can achieve real-time monitoring of earth-leakage status, configure relay parameters remotely, and access diagnostic data. This level of connectivity is essential for predictive maintenance, rapid fault response, and overall system optimization, contributing to reduced downtime and operational costs. Key benefits and features of the Littelfuse EL731-14-00 include: * **Precise Earth-Leakage Detection:** Offers sensitive and reliable detection of ground faults, crucial for preventing electrical fires and shocks. * **Dual Voltage Compatibility:** Supports both 24VAC and 48VDC supply voltages, enhancing installation flexibility. * **Modbus®TCP Communication:** Facilitates easy integration into industrial networks for remote monitoring, control, and diagnostics. * **Enhanced Safety:** Protects personnel and equipment by quickly identifying and responding to dangerous ground fault conditions. * **Reliable Manufacturer:** Backed by Littelfuse's reputation for quality and innovation in circuit protection solutions. The EL731-14-00 is an ideal solution for a broad spectrum of industrial applications, including: * Manufacturing plants * Power generation facilities * Water and wastewater treatment plants * Mining operations * Commercial buildings with complex electrical systems * Anywhere reliable ground fault protection is a requirement. By implementing the Littelfuse EL731-14-00, facility managers and electrical engineers can significantly enhance the safety profile of their operations, ensure compliance with electrical safety standards, and maintain the continuous operation of critical machinery. Its advanced communication capabilities empower a more proactive approach to electrical system maintenance and management.
  • Littelfuse EL731-14-00 Earth-Leakage Relay for industrial safety
  • Dual supply voltage: 24VAC and 48VDC compatibility
  • Integrated Modbus®TCP communication for network integration
  • Precise ground fault detection to protect personnel and equipment
  • Robust design for reliable performance in industrial environments

Specifications

Application
NA
Brand Name
Littelfuse
Series
EL731
Special Features
Adjustable pickup
Standard
UL, CSA, C-Tick
Sub Brand
EL731 Series
Type
Protection Relay
Voltage Rating
24 VAC / 48 VDC
Package Dimensions (L x W x H)
5 IN x 3.8 IN x 1.9 IN
Package Dimensions (L x W x H)
12.7 cm x 9.652 cm x 4.826 cm
Package Weight (Imperial)
1.100 L
Package Weight (Metric)
0.500 kg
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Frequently Asked Questions about Littelfuse

What certifications and standards do Littelfuse products comply with?

Littelfuse products are certified to multiple international standards, including UL (Underwriters Laboratories), CSA (Canadian Standards Association), CCC (China Compulsory Certification), and EAC (Eurasian Conformity). Customers can verify specific product certifications by consulting individual product datasheets on Littelfuse.com, which provide comprehensive details about standards compliance for each component.

What industries and applications are Littelfuse products used for?

Littelfuse products are critical for electrical protection and safety across multiple industrial sectors, including manufacturing, automation, power distribution, and electrical control systems. Their comprehensive product portfolio serves industries that require robust electrical protection, including motor and pump applications, solar installations, programmable logic controllers (PLCs), electrical switch panels, and critical infrastructure environments. Key product lines protect against overcurrent, voltage transients, ground faults, and temperature-related electrical risks, ensuring equipment safety and operational reliability.

What technical support does Littelfuse offer?

Littelfuse offers comprehensive technical support through multiple channels. Their Technical Hotline (800-TEC-FUSE) provides direct access to engineers who can help identify issues and recommend solutions. Additionally, Littelfuse offers extensive online Technical Resources at Littelfuse.com, including datasheets, product manuals, whitepapers, application guides, and online design tools. Their experienced product and application engineers also provide step-by-step support from design to installation.

What are the main product lines offered by Littelfuse?

Littelfuse offers comprehensive industrial protection and control product lines, including fuses, fuse holders, protection relays, temperature sensors, and electrical safety components. Their key product categories span surge protective devices, custom OEM products, electrical switch panels, medium voltage fuses, ground-fault protection relays, motor and pump protection devices, and temperature sensors. These products are designed to minimize electrical safety hazards, limit equipment damage, improve productivity, and safeguard personnel from electrical faults.

What are the key features of Littelfuse products?

Littelfuse products feature exceptional circuit protection technologies with key characteristics including UL/IEC safety standard compliance, low internal resistance, and advanced protective capabilities across multiple product lines. Their components provide critical protection for industrial systems, offering features like overcurrent protection, voltage transient suppression, and resettable protection devices with ultra-low resistance and compact designs. Key product lines include fuses, metal oxide varistors (MOVs), TVS diodes, PolySwitch devices, and specialized electronic protection components that enhance system reliability and safety.

What environmental ratings do Littelfuse products have?

Littelfuse products feature comprehensive environmental ratings, including NEMA Type 1, 2, 3, 3R, 4/4X, 12, and 13 certifications, as well as IP65 protection. These ratings ensure superior protection in diverse industrial environments, with an operating temperature range of -40°F to +131°F (-40°C to +55°C). Many products also include UV-stabilized materials and neoprene gaskets for enhanced durability in outdoor and challenging conditions.

What accessories are available for Littelfuse products?

Littelfuse offers several key accessories across their product lines, including fuse holders, voltage monitoring modules, and terminal connectors. Specific accessories include the LPSM003ZXID (indicating) and LPSM003Z (non-indicating) POWR-SAFE Dead Front fuse holders for Class CC and Midget-Style fuses, the VRM6048 voltage monitor accessory module, and female quick connect terminals (P1015 series) in various wire gauge sizes. These accessories are designed to enhance protection, monitoring, and connectivity for Littelfuse electrical components.

What is Littelfuse's warranty policy?

Littelfuse provides comprehensive warranty details on their official website at www.littelfuse.com/warranty. Customers should visit this page to review the specific warranty terms and conditions for their specific product lines. For direct warranty support or questions, customers can contact Littelfuse Technical Support at 1-800-TEC-FUSE or email [email protected].

What communication protocols do Littelfuse products support?

Littelfuse supports a comprehensive range of industrial communication protocols, including PROFIBUS, PROFINET, EtherNet/IP, DeviceNet, Modbus RTU, and CANopen. Our products provide flexible connectivity solutions across multiple industrial automation platforms, enabling seamless integration with various control systems and network architectures.

How are Littelfuse products typically installed?

Littelfuse products are typically installed using specialized mounting hardware like fuse holders, blocks, and panels designed for specific industrial applications. The POWR-SAFE Dead Front holders, for example, provide optimum protection for Class CC and Midget-Style fuses, supporting installations up to 600 VAC/DC. Installation often involves using precision terminals with strain relief, such as 0.25 in. female quick connect terminals, to ensure secure and safe electrical connections in industrial control systems.