Littelfuse SE-330-20-01 - SE-330-20-01 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. Network communications is offered via USB.
Littelfuse

SE-330-20-01

Alternate Item Number: SE-330-20-01

UPC: 079458988468


Documents & Media
BrochureTechnical BulletinSpecification SheetVideo ClipUser Manual

Contact for Pricing

Overview

The Littelfuse SE-330-20-01 stands as a sophisticated and indispensable component for industrial electrical systems, engineered to provide advanced monitoring and protection against ground faults and neutral-grounding resistor integrity. This unit is meticulously designed for environments where reliable power distribution and stringent safety protocols are paramount. Its robust construction and precise functionality make it a cornerstone for maintaining operational continuity and safeguarding personnel and equipment from the hazards associated with ground faults. Engineered with a versatile supply voltage range, the SE-330-20-01 accommodates both AC and DC power inputs, specifically operating within 28–52 VAC and 36–72 VDC. This broad compatibility ensures seamless integration into a wide array of industrial power configurations, from control panels to complex power distribution networks. The ability to function across these voltage parameters underscores its adaptability and suitability for diverse applications, including manufacturing plants, data centers, renewable energy installations, and critical infrastructure. A key feature that elevates the SE-330-20-01 is its integrated network communication capability via USB. This connectivity facilitates straightforward data logging, remote monitoring, and system diagnostics. Professionals can leverage this feature to proactively identify potential issues, perform detailed analysis of system performance, and streamline maintenance procedures. The ease of data extraction and remote access significantly reduces downtime and enhances the overall efficiency of electrical system management. This makes it an ideal choice for modern industrial facilities that rely on real-time data for operational intelligence and predictive maintenance strategies. The Littelfuse SE-330-20-01 is more than just a monitoring device; it's a critical safety and reliability solution. By continuously assessing the integrity of the grounding system, it helps prevent equipment damage, electrical fires, and potential electrocution hazards. Its advanced algorithms and sensitive detection capabilities ensure that even minor deviations from normal operation are flagged, allowing for timely intervention. This proactive approach is crucial for industries where uninterrupted power and safety compliance are non-negotiable. Key benefits and features include: * **Advanced Ground-Fault Detection:** Provides early and accurate detection of ground faults, minimizing risk. * **Neutral-Grounding Resistor Monitoring:** Ensures the integrity and effectiveness of the grounding resistor. * **Wide Voltage Compatibility:** Operates with 28–52 VAC and 36–72 VDC supply voltages, offering flexibility. * **USB Network Communications:** Enables easy data logging, remote monitoring, and system diagnostics. * **Robust Industrial Design:** Built to withstand demanding environmental conditions typical of industrial settings. * **Enhanced Safety and Compliance:** Contributes to meeting stringent safety standards and protecting critical assets. Littelfuse is a globally recognized leader in circuit protection and power control solutions, renowned for its commitment to quality, innovation, and reliability. The SE-330-20-01 exemplifies this dedication, offering a high-performance, dependable solution for critical industrial applications. Its integration into power systems ensures a higher level of operational security and efficiency, making it a trusted choice for engineers and facility managers seeking to optimize their electrical infrastructure.
  • Advanced ground-fault and neutral-grounding resistor monitoring
  • Wide supply voltage range: 28–52 VAC and 36–72 VDC
  • Network communications via USB for data logging and remote monitoring
  • Designed for industrial power distribution and control systems
  • Enhances safety, reliability, and operational efficiency

Specifications

Application
Low- and medium-voltage transformers and generators
Brand Name
Littelfuse
Special Features
Continuous NGR monitoring
Sub Brand
SE 330 Series
Type
Neutral-grounding resistor monitor
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
Relay Accessories, Sockets & Clips, Printed Circuit Board, Phenolic, Printed Circuit Board, 6, Socket, Potter & Brumfield R10

1-1393143-3

Relay Accessories, Sockets & Clips, Printed Circuit Board, Phenolic, Printed Circuit Board, 6, Socket, Potter & Brumfield R10
Relay Accessories, Sockets & Clips, Solder, Polyester, Printed Circuit Board, 2, Socket, Potter & Brumfield R10

1-1393143-6

Relay Accessories, Sockets & Clips, Solder, Polyester, Printed Circuit Board, 2, Socket, Potter & Brumfield R10
RTXD Extractor Tool

6896057-1

RTXD Extractor Tool
Power supply for DIN-rail

PS-60

Power supply for DIN-rail
IP67 SCP-X Extreme Environment Series Power Supply. Double Stacked, Output Power 2 x 100W, Output Voltage 24 Vdc, Output Current 7.6 A total, 3.8 A per pair

SCP102D24X-C02

IP67 SCP-X Extreme Environment Series Power Supply. Double Stacked, Output Power 2 x 100W, Output Voltage 24 Vdc, Output Current 7.6 A total, 3.8 A per pair

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.