Littelfuse PGR-4700-120 - PGR-4700-120 is a sensitive ground-fault relay with a supply voltage ac of 120.
Littelfuse

PGR-4700-120

Alternate Item Number: PGR-4700-120

UPC: 079458177336


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Overview

The Littelfuse PGR-4700-120 is a critical component for ensuring electrical safety and operational integrity within demanding industrial and commercial environments. As a sensitive ground-fault relay, its primary function is to detect even minute leakage currents to ground, which can indicate developing faults, insulation degradation, or potential hazards to personnel and equipment. This proactive detection capability is paramount in preventing catastrophic failures, electrical fires, and severe injuries. Engineered with precision, the PGR-4700 series, and specifically the PGR-4700-120 model, operates with a reliable 120VAC supply voltage, making it compatible with a wide range of standard electrical distribution systems. Its sensitivity is key; it can identify ground faults that might otherwise go unnoticed by standard overcurrent protection devices, thereby offering a superior layer of protection. This is particularly important in applications where personnel may come into contact with equipment or where the presence of moisture or conductive materials increases the risk of ground faults. Key features and benefits of the Littelfuse PGR-4700-120 include: * **Enhanced Safety:** Provides advanced protection against ground faults, safeguarding personnel from electrical shock. * **Equipment Protection:** Prevents damage to sensitive electrical equipment caused by ground fault currents. * **Reliable Detection:** Offers precise detection of low-level ground faults that could signal impending system failures. * **Wide Applicability:** Suitable for a broad spectrum of industrial settings, including manufacturing plants, data centers, commercial buildings, and utility substations. * **120VAC Operation:** Designed to integrate seamlessly with standard 120-volt AC power systems. * **Littelfuse Quality:** Backed by the reputation of Littelfuse, a global leader in circuit protection, ensuring durability and performance. The installation of a sensitive ground-fault relay like the PGR-4700-120 is a proactive measure that complements existing safety protocols. It is often specified in applications governed by stringent electrical codes and standards, such as those requiring ground-fault circuit interrupter (GFCI) functionality at a higher level of system protection. Professionals selecting this relay will consider its trip sensitivity, response time, and integration capabilities with control systems and alarm indicators. The robust design and manufacturing expertise of Littelfuse ensure that the PGR-4700-120 will perform reliably under challenging operational conditions, contributing significantly to the overall safety and efficiency of electrical infrastructure. Trust in Littelfuse for your most critical protection needs.
  • Sensitive ground-fault detection for enhanced electrical safety
  • 120VAC supply voltage for broad system compatibility
  • Protects personnel and critical equipment from ground faults
  • Reliable performance from industry leader Littelfuse
  • Ideal for industrial and commercial electrical systems

Specifications

Application
NA
Brand Name
Littelfuse
Series
PGR-4700
Special Features
Detects very lowlevel leakage current on large circuits
Standard
UL Listed
Sub Brand
PGR 4700 Series
Type
Protection Relay
Voltage Rating
120 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.