Littelfuse PGR-6801-240 - PUMP RELAY, 16A BUILT-IN CTS, 240VAC. The PGR-6800 Pump Protection Relay provides protection for pumps with three-phase motors up to 1,000 Vac. No current transformers are required for currents up to 91 A. The protective functions include overload, phase unbalance, phase loss, phase sequence and undercurrent. The PGR-6800 Pump Protection Relay is ideally suited for applications where operating without load can induce failure. Motor current is monitored and an undercurrent trip occurs when the current drops below a preset level. No additional level detectors are required.
Littelfuse

PGR-6801-240

UPC: 079458189278


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Overview

The Littelfuse PGR-6801-240 Pump Protection Relay is a critical component for safeguarding industrial three-phase pump motors operating up to 1,000 Vac. Engineered by Littelfuse, a recognized leader in circuit protection, this relay offers robust and comprehensive protection against common motor failure causes, ensuring operational continuity and extending equipment lifespan. Its integrated 16A current sensing capability and 240VAC voltage compatibility make it a versatile solution for a wide range of pumping applications. One of the standout features of the PGR-6800 series, including the PGR-6801-240, is its advanced built-in current transformers (CTs). This innovative design eliminates the need for external CTs for motor currents up to 91A, significantly simplifying installation, reducing wiring complexity, and lowering overall system costs. This integrated approach is particularly beneficial in space-constrained environments or for retrofitting existing systems. The relay provides essential protective functions that are vital for the reliable operation of three-phase motors. These include: * **Overload Protection:** Prevents motor damage due to sustained excessive current draw. * **Phase Unbalance:** Detects imbalances in the three-phase power supply, which can lead to overheating and reduced motor efficiency. * **Phase Loss:** Immediately trips the motor if one or more phases of the power supply are lost, preventing single-phasing damage. * **Phase Sequence:** Ensures correct phase rotation, which is crucial for the proper operation of many types of pumps and motors. * **Undercurrent Protection:** This function is particularly crucial for pump applications. The PGR-6801-240 monitors motor current and initiates a trip if the current drops below a preset level. This is invaluable for detecting conditions such as dry running, cavitation, or pump blockage, where the motor may be operating without sufficient load, leading to potential damage or inefficient operation. This feature negates the need for separate level detectors in many scenarios. The Littelfuse PGR-6801-240 is ideally suited for demanding industrial environments where pump reliability is paramount. Typical applications include: * Water and wastewater treatment facilities * Irrigation systems * Industrial process pumping * HVAC systems * Chemical processing plants * Any application utilizing three-phase motors where protection against no-load conditions is essential. By proactively monitoring motor performance and responding to abnormal conditions, the PGR-6801-240 helps prevent costly downtime, reduces maintenance requirements, and ensures the efficient operation of critical pumping infrastructure. Littelfuse's commitment to quality and innovation is evident in the robust design and comprehensive protection offered by this pump protection relay, making it a trusted choice for engineers and maintenance professionals.
  • Protects three-phase motors up to 1,000 Vac
  • Built-in current transformers (no external CTs needed up to 91A)
  • Comprehensive protection: overload, phase unbalance, phase loss, phase sequence, undercurrent
  • Undercurrent trip prevents dry running and no-load operation
  • Ideal for industrial pump applications, reducing downtime and maintenance

Specifications

Application
NA
Brand Name
Littelfuse
Current Rating
16 A
Poles
3-Phase
Series
PGR-6800
Special Features
Adjustable trip setting
Standard
UL Listed
Sub Brand
PGR 6800 Series
Type
Protection Relay
Voltage Rating
240 Vac
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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.