Littelfuse SE-330HV-20-01 - SE-330HV-20-01 is an advanced ground-fault and neutral-grounding resistor monitor with a supply voltage ac of 28–52 and a supply voltage dc of 36–72. This monitor is used for high-voltage applications. Network communications is offered via USB.
Littelfuse

SE-330HV-20-01

Alternate Item Number: SE-330HV-20-01

UPC: 079458988864

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Overview

The Littelfuse SE-330HV-20-01 stands as a sophisticated and indispensable component for ensuring the safety and reliability of high-voltage electrical systems. As an advanced ground-fault and neutral-grounding resistor monitor, this device is engineered to detect and alert operators to critical deviations in system grounding, preventing potential equipment damage and personnel hazards. Its robust design and precise monitoring capabilities make it an ideal solution for demanding industrial environments where uninterrupted operation and stringent safety standards are paramount. Engineered for versatility, the SE-330HV-20-01 accommodates a broad supply voltage range, operating efficiently with AC voltages from 28 to 52 volts and DC voltages from 36 to 72 volts. This wide operational window ensures compatibility with a diverse array of high-voltage power distribution networks, substations, and industrial machinery. The monitor's primary function is to continuously assess the integrity of the neutral-grounding resistor, a crucial element in fault current limitation and system stability. By providing early detection of ground faults or degradation of the grounding resistor, the SE-330HV-20-01 allows for proactive maintenance and swift corrective actions, thereby minimizing downtime and operational disruptions. Integration into modern industrial control and monitoring infrastructure is streamlined thanks to the inclusion of USB network communications. This feature facilitates easy data logging, remote monitoring, and configuration, enabling plant operators and maintenance personnel to access critical system status information efficiently. The USB interface simplifies the process of integrating the SE-330HV-20-01 into SCADA systems, data acquisition platforms, or local diagnostic tools, enhancing overall system visibility and control. This connectivity is vital for predictive maintenance strategies and for meeting regulatory compliance requirements. Key features and benefits of the Littelfuse SE-330HV-20-01 include: * **Advanced Ground-Fault Detection:** Provides sensitive and reliable detection of ground faults, crucial for preventing cascading failures. * **Neutral-Grounding Resistor Monitoring:** Continuously assesses the health and resistance value of the neutral-grounding resistor, ensuring optimal system performance and protection. * **Wide Voltage Compatibility:** Operates across a broad AC (28–52 V) and DC (36–72 V) supply voltage range, offering flexibility in application. * **High-Voltage Application Focus:** Specifically designed and optimized for the rigorous demands of high-voltage industrial power systems. * **USB Network Communications:** Enables straightforward data transfer, remote monitoring, and system integration for enhanced operational efficiency. The Littelfuse brand is synonymous with quality and reliability in circuit protection and power control components. The SE-330HV-20-01 exemplifies this commitment, offering a dependable solution for critical infrastructure protection. Industries such as power generation, heavy manufacturing, mining, and transportation, which rely heavily on stable and safe high-voltage systems, will find this monitor to be an invaluable asset. Its installation is typically performed by qualified electrical engineers and technicians within control panels or directly adjacent to the neutral-grounding resistor assembly, ensuring immediate and accurate monitoring of the grounding system's performance. By investing in the Littelfuse SE-330HV-20-01, organizations can significantly enhance their electrical system safety, reduce the risk of costly outages, and ensure the longevity of their valuable assets.
  • Advanced ground-fault and neutral-grounding resistor monitoring for high-voltage systems.
  • Wide supply voltage range: 28–52 VAC and 36–72 VDC.
  • Integrated USB network communications for easy data access and integration.
  • Enhances system safety, reliability, and operational efficiency in industrial environments.
  • Designed for demanding applications where precise fault detection is critical.

Specifications

Application
Low- and medium-voltage transformers and generators
Brand Name
Littelfuse
Series
SE-330HV
Special Features
Continuous NGR monitoring
Sub Brand
SE 330 Series
Type
Neutral-grounding resistor monitor
Voltage Rating
28–52 V AC / 36–72 V DC
Package Dimensions (L x W x H)
5.8 IN x 3.9 IN x 8.4 IN
Package Dimensions (L x W x H)
14.732 cm x 9.906 cm x 21.336 cm
Package Weight (Imperial)
4.400 L
Package Weight (Metric)
2.000 kg
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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.