Littelfuse AC700-CUA-04 - Optional network-interface and firmware-upgrade communications adapter. Field installs in EL731.
Littelfuse

AC700-CUA-04

Alternate Item Number: AC700-CUA-04

UPC: 079458977646


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Overview

The Littelfuse AC700-CUA-04 is a field-installable network-interface and firmware-upgrade communications adapter designed for seamless integration with the EL731 series relays. This versatile accessory enables efficient firmware updates and reliable network communications, ensuring optimal performance and compatibility in industrial automation systems. Engineered for remote management and diagnostics, the AC700-CUA-04 enhances operational efficiency by reducing downtime and simplifying maintenance workflows. Its plug-and-play design allows for quick installation into existing EL731 systems without requiring extensive reconfiguration, making it an ideal solution for modern industrial environments where reliability and uptime are critical. Key applications for the AC700-CUA-04 include programmable logic controllers (PLCs), supervisory control and data acquisition (SCADA) systems, and distributed control systems (DCS) where real-time monitoring and firmware management are essential. The adapter supports multiple industrial communication protocols, including Modbus TCP, EtherNet/IP, DeviceNet, and Profibus, ensuring broad compatibility with a wide range of industrial equipment. This flexibility makes it particularly valuable in sectors such as manufacturing, energy, water treatment, and building automation, where diverse communication standards are commonly deployed. The AC700-CUA-04 is part of Littelfuse’s comprehensive relay accessory lineup, a trusted brand known for its high-quality industrial protection and control solutions. Littelfuse’s commitment to innovation and reliability is evident in the AC700-CUA-04’s robust design, which is built to withstand harsh industrial environments. The adapter’s field-installable feature allows technicians to upgrade or replace components without disrupting ongoing operations, a critical advantage in mission-critical applications. For professionals evaluating communication adapters, the AC700-CUA-04 stands out for its ease of integration, compatibility with existing infrastructure, and support for firmware upgrades that ensure long-term system performance. Whether used in new installations or as part of an upgrade to legacy systems, this adapter provides a cost-effective solution for enhancing network connectivity and operational efficiency. Littelfuse’s global distribution network and technical support further reinforce the AC700-CUA-04 as a dependable choice for industrial automation professionals seeking reliable communication solutions.
  • Field-installable network-interface and firmware-upgrade communications adapter
  • Compatible with EL731 series relays for seamless integration
  • Supports multiple industrial protocols: Modbus TCP, EtherNet/IP, DeviceNet, Profibus
  • Enables remote firmware updates and real-time monitoring
  • Reduces downtime with plug-and-play installation and reliable performance

Specifications

Application
Industrial
Brand Name
Littelfuse
Mounting Type
Field-installable
Series
AC700
Special Features
Optional network-interface and firmware-upgrade communications adapter
Sub Brand
AC 700 Series
Type
Communications Adapter
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.