Littelfuse E7800.0670 - Motorized Potentiometer 24V DC, 500. 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

E7800.0670

UPC: 079458961454

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Overview

The **Littelfuse E7800.0670 Motorized Potentiometer** is a high-performance 24V DC device engineered for seamless integration in industrial control systems requiring precise, repeatable potentiometer adjustments. Designed as an interface between relay contacts, push buttons, or other low-voltage control signals and machinery that demands external potentiometer input—such as electronic governors, variable frequency drives (VFDs), or motor speed controllers—the E7800 series delivers unmatched flexibility and reliability. With all three potentiometer wires accessible via external connection terminals, this motorized potentiometer eliminates the need for internal wiring modifications, enabling quick installation and adaptability across a wide range of applications. Whether deployed in factory automation, HVAC systems, or renewable energy installations, the E7800.0670 ensures consistent performance even in harsh operating environments. One of the standout features of the **Littelfuse E7800.0670** is its **position memory function**, which guarantees the potentiometer retains its last set position even during power interruptions. This critical capability prevents process disruptions and ensures smooth resumption of operations, a vital requirement in industries such as oil and gas, water treatment, and material handling. Additionally, Littelfuse offers a special version of the E7800 with **DC voltage output**, where the output voltage dynamically follows the potentiometer’s position. This feature is particularly valuable in applications requiring proportional control signals, such as throttle or speed adjustments in engines, pumps, or conveyor systems. The **500Ω resistance rating** of the E7800.0670 makes it ideal for interfacing with a broad spectrum of industrial equipment, from PLCs and HMIs to analog controllers and legacy systems. Its **24V DC operation** aligns with modern automation standards, ensuring compatibility with common industrial power supplies and control circuits. The robust construction of the E7800 series is built to withstand vibration, temperature extremes, and electrical noise, making it a trusted choice for mission-critical applications. Professionals in industries such as **manufacturing, power generation, marine, and aerospace** rely on Littelfuse’s reputation for quality and innovation when selecting components for control systems. Installation is straightforward thanks to the **external terminal design**, which allows for easy wiring and troubleshooting without disassembling the device. The potentiometer’s motorized operation enables remote or automated adjustments, reducing the need for manual intervention and minimizing human error. This is especially beneficial in applications where frequent recalibration or dynamic adjustments are required, such as in **turbine speed control, fan modulation, or valve positioning systems**. The E7800 series is also well-suited for retrofitting older equipment, as it can emulate the behavior of traditional manual potentiometers while adding the advantages of motorized operation and position retention. Littelfuse, a global leader in circuit protection and industrial control solutions, has designed the **E7800.0670 Motorized Potentiometer** to meet the rigorous demands of industrial environments. With decades of expertise in developing reliable, high-quality components, Littelfuse ensures that the E7800 series delivers **precision, durability, and ease of integration**—qualities that engineers and technicians prioritize when selecting control system accessories. Whether used in **process automation, machinery control, or energy management systems**, the E7800.0670 provides the performance and flexibility needed to optimize operations and enhance system reliability. For professionals seeking a **versatile, memory-retentive motorized potentiometer** that combines ease of use with industrial-grade robustness, the **Littelfuse E7800.0670** is an exceptional choice. Its compatibility with standard control signals, optional DC output functionality, and rugged design make it a go-to solution for engineers designing or upgrading control systems. Trust Littelfuse to deliver the precision and reliability required to keep industrial processes running smoothly and efficiently.
  • 24V DC operation for seamless integration with industrial control systems
  • 500Ω resistance for broad compatibility with motors, governors, and VFDs
  • Position memory retains last setting during power loss for uninterrupted operation
  • External terminal access simplifies wiring and installation in tight spaces
  • Optional DC voltage output version for proportional control applications
  • Rugged design withstands vibration, temperature extremes, and electrical noise
  • Ideal for retrofitting legacy systems and modern automation environments

Specifications

Application
Marine
Brand Name
Littelfuse
Connection Type
Screw Terminal
Series
E7800
Special Features
Manual speed adjustment
Standard
CE Label, RRR Approval
Sub Brand
E7800 Series
Type
Generator Controls and Protection
Voltage Rating
24 V 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.