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Littelfuse SE-330HV-21-00 - SE-330HV-21-00 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; DeviceNet.
Littelfuse

SE-330HV-21-00

Alternate Item Number: SE-330HV-21-00

UPC: 079458988871


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Overview

The Littelfuse SE-330HV-21-00 represents a significant advancement in ground-fault and neutral-grounding resistor monitoring for high-voltage industrial power systems. Engineered by Littelfuse, a globally recognized leader in circuit protection and power control solutions, this advanced monitor is specifically designed to ensure the integrity and safety of critical electrical infrastructure. Its robust design and sophisticated functionality make it an indispensable component for applications demanding unwavering reliability and precise fault detection. Operating within a versatile supply voltage range, the SE-330HV-21-00 accommodates AC voltages from 28 to 52V and DC voltages from 36 to 72V. This broad operational window ensures compatibility with a wide array of high-voltage distribution networks, including those found in utilities, heavy manufacturing, mining operations, and large-scale renewable energy installations. The primary function of this monitor is to detect and report ground faults within a neutral grounding resistor circuit. Such faults, if left unaddressed, can lead to equipment damage, system instability, and significant safety hazards. By providing continuous, real-time monitoring, the SE-330HV-21-00 allows for prompt intervention, minimizing downtime and protecting valuable assets. Integration into existing control and SCADA systems is streamlined thanks to the inclusion of advanced network communication capabilities. The SE-330HV-21-00 offers both USB and DeviceNet interfaces, facilitating seamless data exchange and remote management. This connectivity is crucial for modern industrial automation, enabling operators to: * Monitor system status from a central location. * Receive immediate alerts for ground faults or resistor anomalies. * Log historical data for trend analysis and predictive maintenance. * Remotely configure settings and diagnostics. The benefits of deploying the Littelfuse SE-330HV-21-00 are manifold. It significantly enhances personnel safety by providing early warning of potentially dangerous ground faults. It also contributes to operational efficiency by preventing costly equipment failures and unplanned outages. The precise monitoring capabilities ensure that the neutral grounding resistor is functioning optimally, which is critical for system stability and protection coordination. Furthermore, the robust construction and adherence to high-quality manufacturing standards by Littelfuse guarantee long-term performance and reliability in demanding industrial environments. Key features of the SE-330HV-21-00 include: * Advanced ground-fault detection for high-voltage systems. * Neutral-grounding resistor monitoring. * Wide AC (28–52V) and DC (36–72V) supply voltage range. * USB and DeviceNet network communication for easy integration. * Enhanced safety and operational efficiency. * Reliable performance in critical infrastructure applications. When selecting a ground-fault and neutral-grounding resistor monitor, factors such as voltage compatibility, communication protocols, environmental ruggedness, and manufacturer reputation are paramount. Littelfuse's extensive experience and commitment to quality in power control components make the SE-330HV-21-00 a trusted choice for engineers and facility managers seeking to safeguard their high-voltage electrical systems. Its ability to provide continuous, reliable monitoring and integrate seamlessly into modern industrial networks solidifies its position as a leading solution for fault prevention and system protection.
  • Advanced ground-fault and neutral-grounding resistor monitoring for high-voltage applications.
  • Wide supply voltage range: 28–52 VAC and 36–72 VDC.
  • Network communications via USB and DeviceNet for seamless integration.
  • Enhances safety and efficiency in industrial power distribution systems.
  • Reliable performance from Littelfuse, a trusted leader in circuit protection.

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 AC / 36–72 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.