Littelfuse SE-330HV-03-01 - SE-330HV-03-01 is an advanced ground-fault and neutral-grounding resistor monitor with a supply voltage ac of 65–265 and a supply voltage dc of 85–275. This monitor is used for high-voltage applications. Network communications is offered via USB; Ethernet (Dual RJ45).
Littelfuse

SE-330HV-03-01

Alternate Item Number: SE-330HV-03-01

UPC: 079458988840


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Overview

The Littelfuse SE-330HV-03-01 is a cutting-edge ground-fault and neutral-grounding resistor monitor engineered for high-voltage industrial applications. Designed to operate reliably in demanding environments, this advanced monitor supports a wide input voltage range of 65–265 VAC and 85–275 VDC, ensuring compatibility with global power systems. With dual RJ45 Ethernet and USB connectivity, the SE-330HV-03-01 delivers seamless network integration, enabling real-time monitoring, diagnostics, and remote configuration for enhanced operational efficiency and safety compliance. Ground-fault monitoring is critical in high-voltage systems to prevent equipment damage, electrical fires, and personnel hazards. The SE-330HV-03-01 excels in detecting ground faults by continuously monitoring neutral-grounding resistors, providing early warnings to mitigate risks before they escalate. Its robust design and high-performance sensing capabilities make it ideal for applications such as: - **Power generation plants** – Ensuring grid stability and compliance with safety standards like IEEE 3001.8. - **Industrial manufacturing facilities** – Protecting sensitive equipment in high-voltage motor control centers and distribution panels. - **Renewable energy systems** – Safeguarding solar and wind power inverters connected to medium-voltage grids. - **Data centers and critical infrastructure** – Maintaining uptime by preventing ground-fault-related outages. - **Oil and gas processing** – Meeting stringent safety requirements in hazardous environments. The SE-330HV-03-01’s dual RJ45 Ethernet ports support Modbus TCP and other industrial protocols, enabling integration with SCADA systems, PLCs, and building management systems (BMS) for centralized monitoring. The USB port facilitates quick configuration, firmware updates, and data logging, reducing downtime during maintenance. Its compact, DIN-rail mountable design ensures easy installation in control panels, switchgear, and other confined spaces. Littelfuse, a global leader in circuit protection and sensing solutions, has built a reputation for reliability and innovation in industrial safety monitoring. The SE-330HV-03-01 reflects this expertise, offering: - **High accuracy fault detection** – Minimizing false alarms while ensuring rapid response to ground faults. - **Wide voltage compatibility** – Adapting to fluctuating power conditions without performance degradation. - **Enhanced diagnostics** – Providing detailed fault logs and event histories for predictive maintenance. - **Compliance with industry standards** – Meeting UL, IEC, and other regulatory requirements for industrial safety. - **Scalable connectivity** – Supporting both wired (Ethernet) and local (USB) interfaces for flexible deployment. Professionals in electrical engineering, plant maintenance, and safety compliance rely on Littelfuse monitors for their proven durability and precision. Whether deployed in new installations or as part of an upgrade to existing systems, the SE-330HV-03-01 delivers unmatched protection for high-voltage applications where reliability is non-negotiable. Trusted by utilities, industrial operators, and OEMs worldwide, this monitor is a cornerstone of modern electrical safety infrastructure.
  • Wide voltage range: 65–265 VAC / 85–275 VDC for global compatibility
  • Dual RJ45 Ethernet & USB connectivity for real-time monitoring
  • Continuous ground-fault detection with neutral-grounding resistor monitoring
  • Modbus TCP support for seamless SCADA/PLC integration
  • Compact DIN-rail mountable design for easy installation

Specifications

Application
Low- and medium-voltage transformers and generators
Brand Name
Littelfuse
Mounting Type
DIN-Rail
Series
SE-330HV
Special Features
Continuous NGR monitoring
Sub Brand
SE 330 Series
Type
Neutral-grounding resistor monitor
Voltage Rating
65–265 V AC / 85–275 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.