Littelfuse E7800.0700 - Motorized Potentiometer 24V DC, 10k. The E7800 Motorized Potentiometer is typically used as an interface between increase/decrease relay contacts (or push buttons) and a device requiring control by an external potentiometer (e.g. the speed trim of an electronic governor). All three wires of the potentiometer are directly accessible on external connection terminals, thus providing the best possible flexibility for almost any application. A special version of the E7800 with DC voltage output is also available. The DC output voltage follows the position of the potentiometer. The design of the E7800 ensures that the potentiometer will “remember” its position although supply is lost
Littelfuse

E7800.0700

UPC: 079458961485

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Overview

The Littelfuse E7800.0700 Motorized Potentiometer is a high-performance 24V DC, 10kΩ device engineered for seamless integration in industrial control systems. Designed as a critical interface between relay contacts, push buttons, or manual controls and devices requiring external potentiometer adjustment, this motorized potentiometer delivers unmatched precision and reliability in demanding applications. Whether used for electronic governor speed trimming, variable frequency drive (VFD) control, or motor speed regulation, the E7800.0700 ensures consistent performance even in the most challenging environments. Key features of the Littelfuse E7800.0700 include direct access to all three potentiometer wires via external connection terminals, eliminating the need for internal wiring modifications and simplifying installation. This design flexibility allows engineers to adapt the potentiometer to virtually any control system configuration, reducing downtime and maintenance costs. The potentiometer’s memory function is a standout feature, retaining its position even during power loss—a critical requirement for applications where system stability is paramount. This ensures that critical processes resume seamlessly after power interruptions, minimizing disruptions and enhancing operational efficiency. The E7800.0700 is available in a standard configuration as well as a special DC voltage output version, where the output voltage dynamically follows the potentiometer’s position. This versatility makes it ideal for applications requiring analog signal feedback, such as closed-loop control systems in HVAC, industrial automation, and renewable energy installations. The 24V DC operation aligns with common industrial power standards, ensuring compatibility with a wide range of control panels and automation equipment. Typical applications for the Littelfuse E7800.0700 include: - **Electronic Governor Speed Trimming**: Precisely adjust the speed of engines or turbines in power generation, oil & gas, and marine applications. - **Variable Frequency Drive (VFD) Control**: Fine-tune motor speeds in conveyor systems, pumps, and fans for optimal energy efficiency. - **Industrial Automation**: Interface with PLCs or HMIs to provide manual override capabilities in process control systems. - **HVAC Systems**: Control damper actuators, fan speeds, or valve positions in building management systems. - **Renewable Energy Systems**: Adjust pitch control mechanisms in wind turbines or optimize solar tracking systems. Installation and integration of the E7800.0700 are straightforward, thanks to its modular design and clearly labeled terminals. The potentiometer can be mounted on DIN rails or directly on control panels, depending on system requirements. Wiring is simplified by the external terminal access, reducing the risk of wiring errors and speeding up commissioning. For applications requiring remote monitoring, the DC voltage output version can be paired with analog input modules in PLCs or SCADA systems, enabling real-time feedback and diagnostics. Littelfuse, a global leader in circuit protection and industrial control solutions, has built a reputation for delivering high-quality, reliable components that meet the rigorous demands of industrial environments. With decades of experience in designing products for harsh conditions, Littelfuse’s motorized potentiometers are trusted by engineers and technicians worldwide. The E7800.0700 is no exception, offering a robust solution that combines durability, precision, and ease of use. For professionals seeking a dependable motorized potentiometer that ensures consistent performance in critical applications, the Littelfuse E7800.0700 is an excellent choice. Its combination of memory retention, flexible output options, and straightforward installation makes it a versatile addition to any industrial control system. Whether optimizing energy efficiency, enhancing process control, or ensuring system reliability, the E7800.0700 delivers the performance and flexibility required for modern industrial automation.
  • 24V DC operation for compatibility with industrial control systems
  • 10kΩ resistance for precise signal adjustment
  • Memory function retains position during power loss
  • Direct access to all three wires via external terminals for flexible wiring
  • Available in standard and DC voltage output versions for versatile applications
  • DIN rail or panel-mountable for easy installation
  • Ideal for electronic governors, VFDs, HVAC, and automation systems

Specifications

Application
Marine
Brand Name
Littelfuse
Connection Type
External Terminals
Series
E7800
Special Features
Manual speed adjustment
Standard
CE Label, RRR Approval
Sub Brand
E7800 Series
Type
Generator Controls and Protection
Voltage Rating
24V DC
Package Dimensions (L x W x H)
3.1 IN x 3.8 IN x 3.8 IN
Package Dimensions (L x W x H)
7.874 cm x 9.652 cm x 9.652 cm
Package Weight (Imperial)
1.000 L
Package Weight (Metric)
0.454 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.