Littelfuse PGA-LS20 - PGA-LS20 is an arc-detection, fiber-optic sensor accessory used with the PGR-8800 relay to collect light over a wide angle. This sensor weighs 1.5 kg.
Littelfuse

PGA-LS20

Alternate Item Number: PGA-LS20

UPC: 079458949469


Documents & Media
BrochureTechnical DrawingSpecification Sheet

Contact for Pricing

Overview

The Littelfuse PGA-LS20 is a critical fiber-optic sensor accessory designed to work exclusively with the Littelfuse PGR-8800 Series Arc-Flash Relay. This sensor is engineered for comprehensive light collection over a wide angle with high sensitivity, ensuring rapid and reliable detection of arc-flash events. Weighing 1.5 kg, the PGA-LS20 offers a robust yet manageable solution for both new switchgear installations and retrofit projects. Its primary function is to detect the intense light emitted during an arc-flash incident. This detection triggers the connected PGR-8800 relay to initiate an immediate trip, significantly limiting equipment damage and enhancing personnel safety. The PGA-LS20 is an integral part of a complete arc-flash protection system, complementing the PGR-8800's advanced features, which include phase-current-transformer inputs for current-constrained protection and an adjustable optical trip level to minimize nuisance tripping. Installation is streamlined, with the PGR-8800 relay featuring a USB interface for easy sensor configuration and monitoring. Front-panel and sensor LEDs provide real-time status indication for both sensor health and fault detection, facilitating quick diagnostics. For comprehensive coverage, multiple PGA-LS20 sensors can be strategically deployed to monitor horizontal and vertical bus bars, breaker compartments, and cable entry points. Threading the fiber-optic cable through cabinets ensures complete coverage, even in complex switchgear configurations, and provides an added layer of redundancy. The PGA-LS20, along with the PGR-8800 relay, is UL, CE, CSA, and RCM certified, meeting stringent international safety standards. This makes it suitable for safeguarding medium-voltage switchgear, motor control centers, and renewable energy systems. Key features include wide-angle light collection, seamless integration with the PGR-8800 relay, a lightweight and durable design, and real-time monitoring capabilities. The PGA-LS20 is an essential component for power utilities, industrial facilities, and commercial buildings requiring dependable arc-flash protection.
  • Wide-angle light collection for comprehensive arc-flash detection
  • High sensitivity for rapid and reliable fault identification
  • Seamless integration with Littelfuse PGR-8800 Arc-Flash Relay
  • Lightweight design (1.5 kg) for easy installation
  • UL, CE, CSA, RCM certified for global compliance
  • Enhances safety and reduces downtime in industrial and utility applications
  • Supports multi-sensor redundancy for enhanced fault coverage
  • Compatible with retrofit and new switchgear installations

Specifications

Application
Industrial
Brand Name
Littelfuse
Series
PGR-8800
Special Features
Photovoltaic
Sub Brand
POWR-GARD
Type
Sensor
Package Weight (Imperial)
3.300 L
Package Weight (Metric)
1.500 kg
Fuse Block 600VAC 600VDC Class CC 30A 1/4in Quick Connect / Solder 90 angle screw Knob Panel Mount

GPM-SRR90

Fuse Block 600VAC 600VDC Class CC 30A 1/4in Quick Connect / Solder 90 angle screw Knob Panel Mount
Fuse Holder UltraSafe™ 800VAC 1000VDC UL Fuse size 14x51 1-Pole Visual Indicator Microswitch Pressure Plate IP20

C331156

Fuse Holder UltraSafe™ 800VAC 1000VDC UL Fuse size 14x51 1-Pole Visual Indicator Microswitch Pressure Plate IP20
Fuse Block 1500VAC 1500VDC 400A 1-Pole Stud M8

1SCM8

Fuse Block 1500VAC 1500VDC 400A 1-Pole Stud M8
Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20

E1062696

Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20
POWR-JAW clamps improve the contact between fuse and clip. The unnecessary heat from poor contact due to the loss of spring force in the clips can cause nuisance fuse opening and premature aging of surrounding components. High temperature phenolic resin knob designed for the most severe environments 7 sizes to provide effective coverage. Simple design makes installation easy.

LCC5

POWR-JAW clamps improve the contact between fuse and clip. The unnecessary heat from poor contact due to the loss of spring force in the clips can cause nuisance fuse opening and premature aging of surrounding components. High temperature phenolic resin knob designed for the most severe environments 7 sizes to provide effective coverage. Simple design makes installation easy.
9F61 Size B Clips 1.6in

9F61BWW460

9F61 Size B Clips 1.6in

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.