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Littelfuse PGR-6100-120 - PGR-6100-120 is a ground-fault and insulation relay with a supply voltage of 120 V ac and 24 V dc.
Littelfuse

PGR-6100-120

Alternate Item Number: PGR-6100-120

UPC: 079458177503

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Overview

The **Littelfuse PGR-6100-120** is a high-performance ground-fault and insulation relay engineered for critical protection in industrial, commercial, and utility applications. Designed with a dual-voltage supply of **120 V AC** and **24 V DC**, this relay delivers precise detection of ground faults and insulation degradation, safeguarding personnel and equipment from electrical hazards. As part of Littelfuse’s **PGR-6100 Series**, it combines advanced sensing technology with rugged construction to ensure reliable operation in demanding environments, including power distribution systems, motor control circuits, and industrial machinery. Ground-fault relays like the PGR-6100-120 are essential components in modern electrical safety architectures, where unchecked ground faults can lead to equipment damage, fire risks, or even catastrophic system failures. This relay continuously monitors insulation resistance and ground-fault currents, triggering immediate response mechanisms—such as circuit interruption—to prevent downtime and costly repairs. Its **120 V AC / 24 V DC supply compatibility** makes it versatile for integration into both AC and DC power systems, a critical advantage in facilities with mixed-voltage infrastructures. **Key Applications & Industries:** - **Power Distribution:** Protects transformers, switchgear, and distribution panels from ground faults and insulation breakdown. - **Motor Control & Drives:** Safeguards variable frequency drives (VFDs), motors, and controllers in industrial automation systems. - **Commercial Buildings:** Ensures compliance with electrical safety codes (e.g., NEC, IEC) in data centers, hospitals, and manufacturing plants. - **Renewable Energy:** Monitors insulation integrity in solar inverters, wind turbine controllers, and battery storage systems. - **Oil & Gas / Mining:** Provides ruggedized protection in harsh, high-risk environments where electrical faults pose severe safety threats. **Why Choose the Littelfuse PGR-6100-120?** - **Dual-Voltage Flexibility:** Operates seamlessly in both **120 V AC** and **24 V DC** systems, reducing inventory complexity and installation costs. - **High-Speed Response:** Advanced sensing circuitry detects faults in milliseconds, minimizing exposure to hazardous conditions. - **Robust Design:** Built to withstand industrial conditions, including temperature extremes, vibrations, and electromagnetic interference (EMI). - **Easy Integration:** Compatible with standard relay mounting and wiring configurations, simplifying retrofits and new installations. - **Compliance & Reliability:** Meets stringent safety standards (UL, CE, CSA) and is backed by Littelfuse’s reputation for high-quality electrical protection solutions. Professionals in electrical engineering, maintenance, and safety rely on ground-fault relays like the PGR-6100-120 to mitigate risks associated with insulation failures and ground faults. Littelfuse, a global leader in circuit protection, fuse technology, and relays, has decades of expertise in designing solutions that enhance system uptime and operational safety. The **PGR-6100-120** exemplifies this commitment, offering a dependable, high-performance option for protecting critical infrastructure across diverse industries. For engineers specifying relay solutions, the PGR-6100-120 provides a balance of precision, durability, and versatility—making it an ideal choice for applications where electrical safety cannot be compromised.
  • Dual-voltage operation: 120 V AC and 24 V DC supply compatibility
  • High-speed ground-fault and insulation monitoring for rapid fault detection
  • Rugged construction for industrial environments (temperature, EMI, vibration)
  • Wide application range: power distribution, motor control, renewable energy, and more
  • Compliant with UL, CE, and CSA safety standards for global use

Specifications

Application
NA
Brand Name
Littelfuse
Special Features
Adjustable GF pickup
Standard
UL Listed
Sub Brand
PGR 6100 Series
Type
Protection Relay
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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.