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Littelfuse PGR-6803-24 - PUMP RELAY, 90A BUILT-IN CTS, 24VDC. 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-6803-24 PUMP RELAY, 90A BUILT-IN CTS, 24VDC. The PGR-6800 Pump Protection Relay provides…

UPC: 079458189315


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Contact for Pricing

Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.

Overview

The Littelfuse PGR-6803-24 Pump Protection Relay is a high-performance, integrated solution for protecting three-phase motor-driven pumps up to 1,000 Vac. Part of the PGR-6800 series, this relay eliminates the need for external current transformers (CTs) for motor currents up to 91 A, simplifying installation and reducing system complexity. Designed for applications where dry-running or low-load conditions can cause catastrophic failure, the PGR-6803-24 monitors critical motor parameters in real time, including overload, phase unbalance, phase loss, phase sequence, and undercurrent. Its built-in CT functionality streamlines panel design and lowers component costs, making it an ideal choice for water treatment, HVAC, agriculture, and general industrial processes. The relay features adjustable overload trip settings (5 to 15) to accommodate a wide range of pump types, ensuring optimal protection and extended motor life. With isolated Form A and Form B output contacts, it enables separate annunciation and trip circuits for enhanced system flexibility. The PGR-6803-24 is UL Listed (E343314) and mounts on a DIN rail, offering a compact, reliable solution for critical pump protection.
  • Integrated CT functionality eliminates need for external current transformers up to 91 A
  • Monitors overload, phase unbalance, phase loss, phase sequence, and undercurrent
  • Adjustable overload trip settings (5 to 15) for versatile pump compatibility
  • Isolated Form A and Form B output contacts for annunciation and trip circuits
  • 24VDC coil voltage for versatile power supply integration.

Specifications

Application
NA
Brand Name
Littelfuse
Current Rating
90 A
Series
PGR-6800
Special Features
Adjustable trip setting
Standard
UL Listed
Sub Brand
PGR 6800 Series
Type
Protection Relay
Voltage Rating
1000 VAC
Relay Accessories, Sockets & Clips, Printed Circuit Board, Phenolic, Printed Circuit Board, 6, Socket, Potter & Brumfield R10

1-1393143-3

Relay Accessories, Sockets & Clips, Printed Circuit Board, Phenolic, Printed Circuit Board, 6, Socket, Potter & Brumfield R10
Relay Accessories, Sockets & Clips, Solder, Polyester, Printed Circuit Board, 2, Socket, Potter & Brumfield R10

1-1393143-6

Relay Accessories, Sockets & Clips, Solder, Polyester, Printed Circuit Board, 2, Socket, Potter & Brumfield R10
RTXD Extractor Tool

6896057-1

RTXD Extractor Tool
Power supply for DIN-rail

PS-60

Power supply for DIN-rail
IP67 SCP-X Extreme Environment Series Power Supply. Double Stacked, Output Power 2 x 100W, Output Voltage 24 Vdc, Output Current 7.6 A total, 3.8 A per pair

SCP102D24X-C02

IP67 SCP-X Extreme Environment Series Power Supply. Double Stacked, Output Power 2 x 100W, Output Voltage 24 Vdc, Output Current 7.6 A total, 3.8 A per pair

Frequently Asked Questions

What protective functions does the PGR-6803-24 provide?

The relay monitors overload, phase unbalance, phase loss, phase sequence, and undercurrent conditions.

What is the input voltage for the PGR-6803-24?

The PGR-6803-24 operates on 24 VDC control power.

What are the output contact types?

The relay features isolated Form A and Form B ground-fault output contacts.

What is the mounting type for this relay?

The PGR-6803-24 mounts on a DIN rail for easy integration into control panels.

Can this relay detect dry-running conditions in pumps?

Yes, the undercurrent protection function detects low-load or no-load conditions, preventing dry-running damage.

What are the dimensions of the PGR-6803-24?

The relay measures 83 mm (H) x 78 mm (W) x 99 mm (D).

Is the PGR-6803-24 suitable for single-phase motors?

No, the PGR-6803-24 is designed for three-phase motor-driven pumps up to 1,000 Vac.

What is the maximum motor current this relay can handle?

The PGR-6803-24 supports motor currents up to 90.4 A without requiring external current transformers.

Does this relay require external current transformers?

No external CTs are required for motor currents up to 91 A, simplifying installation.

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.