Littelfuse E7800.0680 - Motorized Potentiometer 24V DC, 1k. 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

E7800.0680

UPC: 079458961461

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Overview

The Littelfuse E7800.0680 Motorized Potentiometer (SKU: E7800.0680) is a sophisticated electromechanical component engineered for precise control and interfacing in demanding industrial automation environments. This 24V DC powered device, featuring a 1k ohm resistance, serves as a critical link between simple increase/decrease relay contacts or push-button inputs and sophisticated devices that require external potentiometer-based control. Its primary application lies in providing fine-tuned adjustments for parameters such as the speed trim of electronic governors, motor speed controllers, and other variable-output systems. The design of the E7800 series prioritizes flexibility and user-centric integration. All three terminals of the internal potentiometer are brought out to external connection terminals. This direct access ensures maximum adaptability, allowing engineers to configure the potentiometer for a wide array of circuit designs and control strategies without complex internal wiring or modifications. Whether used in HVAC systems for precise airflow control, in manufacturing lines for variable speed drives, or in process control for setting specific operational parameters, the E7800.0680 offers unparalleled ease of implementation. A standout feature of the Littelfuse E7800.0680 is its non-volatile position memory. The potentiometer is designed to retain its last set position even in the event of a power interruption. This crucial functionality prevents unintended system resets or drifts upon power restoration, ensuring consistent and predictable operation. For applications requiring a direct voltage output that mirrors the potentiometer's position, a special version of the E7800 is available, providing a proportional DC voltage output that directly corresponds to the wiper's setting. This opens up possibilities for analog feedback loops and direct voltage control. Key benefits and features of the Littelfuse E7800.0680 include: * **Precise Control:** Enables fine adjustment of external devices requiring potentiometer input. * **Flexible Interfacing:** Connects easily with increase/decrease relay contacts or push buttons. * **Universal Application:** Suitable for a broad range of industrial control systems. * **Position Memory:** Retains setting after power loss for operational continuity. * **External Terminals:** Facilitates straightforward wiring and integration. * **Optional DC Voltage Output:** Offers proportional voltage output for advanced control. Littelfuse is a globally recognized leader in circuit protection and switching solutions, known for its commitment to quality, reliability, and innovation. The E7800.0680 Motorized Potentiometer embodies this reputation, offering a robust and dependable solution for critical control applications. Its durable construction and thoughtful design make it an ideal choice for engineers seeking to enhance the precision and responsiveness of their automated systems. When selecting a motorized potentiometer for industrial use, factors such as resistance value, voltage rating, environmental sealing, and control interface are paramount. The E7800.0680 meets these requirements with its standard 1k ohm resistance, 24V DC operation, and versatile connection options, making it a go-to component for professionals in automation, electrical engineering, and system integration.
  • 24V DC motorized potentiometer with 1k ohm resistance for precise industrial control.
  • Interfaces with increase/decrease relay contacts or push buttons for versatile input.
  • All three potentiometer wires accessible via external terminals for maximum application flexibility.
  • Maintains potentiometer position even after power supply loss, ensuring operational continuity.
  • Available in a special version with DC voltage output proportional to potentiometer position.

Specifications

Application
Marine
Brand Name
Littelfuse
Connection Type
Screw Terminal
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
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.