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Littelfuse SPD2-300-1P1 - Surge protection devices (SPDs) provide equipment protection from transient overvoltage events lasting micro-seconds. By limiting the overvoltage to the equipment during these events, costly damage and downtime can be mitigated. The surge protection devices for the 1+0 configuration are available for 60 V to 600 V nominal voltage sub-distribution board applications.

Littelfuse SPD2-300-1P1 Surge protection devices (SPDs) provide equipment protection from transient overvoltage…

Alternate Item Number: SPD2-300-1P1

UPC: 079458257687

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Contact for Pricing

Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.

Overview

The **Littelfuse SPD2-300-1P1** is a high-performance **surge protection device (SPD)** engineered to safeguard critical electrical infrastructure from transient overvoltage events, which occur in microseconds and pose severe risks to sensitive equipment. Designed for **60V to 600V nominal voltage** applications, this **1+0 pole configuration SPD** is optimized for **sub-distribution board installations** in industrial, commercial, and utility environments where reliability and uptime are non-negotiable. By clamping excessive voltage spikes to safe levels, the SPD2-300-1P1 prevents costly equipment damage, system failures, and unplanned downtime—ensuring continuous operation of vital systems such as control panels, automation networks, and power distribution units. Surge events, often caused by lightning strikes, switching transients, or grid disturbances, can induce voltage spikes exceeding **thousands of volts** in milliseconds, overwhelming downstream equipment and leading to insulation breakdown, component degradation, or catastrophic failure. The **SPD2-300-1P1** mitigates these risks by providing **fast response times** and **high energy absorption capacity**, effectively diverting transient currents to ground while maintaining system integrity. Its **compact, modular design** allows for seamless integration into **sub-distribution panels**, distribution boards, and industrial control systems without requiring extensive reconfiguration or additional space. **Key Applications & Industry Use Cases** The Littelfuse SPD2-300-1P1 is purpose-built for environments where electrical stability is critical, including: - **Industrial Facilities**: Protecting PLCs, motor drives, and variable frequency drives (VFDs) in manufacturing plants. - **Commercial Buildings**: Safeguarding HVAC systems, lighting controls, and IT infrastructure in offices, hospitals, and data centers. - **Renewable Energy Systems**: Shielding inverters and battery management systems in solar and wind power installations. - **Utilities & Infrastructure**: Ensuring resilience in substations, telecom towers, and transportation systems. - **Oil & Gas**: Protecting instrumentation and control systems in hazardous locations. **Why Choose Littelfuse for Surge Protection?** With over **100 years of expertise** in circuit protection, Littelfuse is a globally trusted leader in designing and manufacturing **high-reliability SPDs** that meet stringent industry standards. The **SPD2-300-1P1** reflects the company’s commitment to innovation, durability, and performance, backed by rigorous testing and compliance with **UL 1449, IEC 61643-11, and EN 61643-11** standards. Professionals in electrical engineering, facility management, and maintenance rely on Littelfuse for solutions that deliver **long-term protection, minimal maintenance, and peace of mind** in high-risk environments. **Installation & Compliance Considerations** Proper installation is essential to maximize the effectiveness of the SPD2-300-1P1. Electrical professionals should follow **IEC 60364-5-53** and **NEC Article 285** guidelines, ensuring correct sizing, grounding, and coordination with upstream protective devices. The **1+0 pole configuration** simplifies wiring for single-phase systems, reducing installation complexity while maintaining robust protection. Regular inspections and compliance with manufacturer recommendations ensure sustained performance and adherence to warranty terms. **Long-Term Benefits of Investing in Quality SPDs** Beyond immediate protection, the SPD2-300-1P1 offers **cost-saving advantages** by: - **Extending equipment lifespan** through reduced stress from transient events. - **Minimizing unplanned downtime** and associated productivity losses. - **Lowering maintenance costs** by preventing damage to sensitive electronics. - **Enhancing system reliability** in compliance with industry regulations and insurance requirements. For engineers, facility managers, and procurement teams seeking a **dependable, high-performance surge protection solution**, the **Littelfuse SPD2-300-1P1** stands as a proven choice. Its **proven track record, industry-leading standards compliance, and Littelfuse’s reputation for quality** make it an essential component in any robust electrical protection strategy.
  • Protects critical equipment from microsecond transient overvoltage events
  • Designed for 60V to 600V nominal voltage sub-distribution board applications
  • 1+0 pole configuration for single-phase systems with simplified wiring
  • High energy absorption capacity for robust surge mitigation
  • Compliant with UL 1449, IEC 61643-11, and EN 61643-11 standards

Specifications

Application
Equipment protection from transient overvoltages
Brand Name
Littelfuse
Poles
1+0
Series
SPD2
Special Features
DIN Rail Mount
Standard
UL Listed/VDE/IEC
Sub Brand
SPD2 Series
Type
Type 2 Surge Protection Devices
Voltage Rating
60-600 V
5-port Ethernet Switch

SDI-550

5-port Ethernet Switch
Fiber cable ODC to SC duplex - 670mm

Fiber cable ODC SC Duplex 670mm

Fiber cable ODC to SC duplex - 670mm
Power supply for DIN-rail

PS-60

Power supply for DIN-rail
24U 21.34W 31.5D CABINET BLK

REFK1904231BK1

24U 21.34W 31.5D CABINET BLK
DIN rail is a universal mounting option for electrical and industrial control products such as circuit breakers electrical supplies terminal blocks and more. The rail system is used to stabilize a wide variety of devices and products. Ordering pre-cut DIN rail helps increase productivity and decrease jobsite clutter. On-site Flexibility Streamline custom cuts DIN rail to any length so it is ready to use when it arrives on the jobsite. Additionally DIN rail can be easily removed if relocation is necessary. Features of Custom DIN Rail from Streamline - All cut DIN rail from Streamline is galvanized steel made to eliminate rusting. Streamline ensures that all custom DIN rail orders are: De-burred Custom Length Any quantity 1-1000+ Quick turnaround (typically 2 weeks or less from receipt of order) This mechanical support structure is a must for all electrical parts solutions big or small. DIN rail allows for mounting hardware easily and quickly. These durable and versatile rails make the perfect solution for all mounting applications. Save space time and money with these cost-effective mounting solutions. Order your custom cut DIN rail today!

CUSTOMDIN

DIN rail is a universal mounting option for electrical and industrial control products such as circuit breakers electrical supplies terminal blocks and more. The rail system is used to stabilize a wide variety of devices and products. Ordering pre-cut DIN rail helps increase productivity and decrease jobsite clutter. On-site Flexibility Streamline custom cuts DIN rail to any length so it is ready to use when it arrives on the jobsite. Additionally DIN rail can be easily removed if relocation is necessary. Features of Custom DIN Rail from Streamline - All cut DIN rail from Streamline is galvanized steel made to eliminate rusting. Streamline ensures that all custom DIN rail orders are: De-burred Custom Length Any quantity 1-1000+ Quick turnaround (typically 2 weeks or less from receipt of order) This mechanical support structure is a must for all electrical parts solutions big or small. DIN rail allows for mounting hardware easily and quickly. These durable and versatile rails make the perfect solution for all mounting applications. Save space time and money with these cost-effective mounting solutions. Order your custom cut DIN rail today!
Super-Safeway® Multiple Outlet Box, Extended Depth, 2-Sided, F2 (1/2") Cord Grip Body, with Flip Lids for (2) Duplex Not Included

3085

Super-Safeway® Multiple Outlet Box, Extended Depth, 2-Sided, F2 (1/2") Cord Grip Body, with Flip Lids for (2) Duplex Not Included
Cable Manager, fits 19-inch open rack, Black, Steel

ECK19H

Cable Manager, fits 19-inch open rack, Black, Steel
6U PERF PANEL

PPFS19010BK

6U PERF PANEL
OM1 2 fiber, 16mm jacket, patchcord, Riser (OFNR) rated, LC duplex to SC duplex, Std IL

F62ERLNSNSNM002

OM1 2 fiber, 16mm jacket, patchcord, Riser (OFNR) rated, LC duplex to SC duplex, Std IL
The Mini-Com Flush Mount Modular Patch Panel accepts up to 24 Mini-Com Modules for unshielded applications in 1 RU, and mounts to 19 inch and 23 inch racks and cabinets. The panel mounts flush with the rack and can be identified with adhesive labels and is black.

CPP24FMWBLY

The Mini-Com Flush Mount Modular Patch Panel accepts up to 24 Mini-Com Modules for unshielded applications in 1 RU, and mounts to 19 inch and 23 inch racks and cabinets. The panel mounts flush with the rack and can be identified with adhesive labels and is black.
Membrane plate cable entry system offers a good strain relief while maintaining IP/NEMA ingress sealing rating. The CESUM3-C15 is a Rectangular Un-Terminated Cable Entry System, 4.1" (103 mm) Long, with 8 Openings 0.12" (3.0 mm) to 0.31" (8 mm), 3 Openings 0.20" (5.1 mm) to 0.35" (9.0 mm), 4 Openings 0.3" (7.5 mm) to 0.47" (12.0 mm). Color is Black. Standard Package Quantity is 1 PC.

CESUM3-C15

Membrane plate cable entry system offers a good strain relief while maintaining IP/NEMA ingress sealing rating. The CESUM3-C15 is a Rectangular Un-Terminated Cable Entry System, 4.1" (103 mm) Long, with 8 Openings 0.12" (3.0 mm) to 0.31" (8 mm), 3 Openings 0.20" (5.1 mm) to 0.35" (9.0 mm), 4 Openings 0.3" (7.5 mm) to 0.47" (12.0 mm). Color is Black. Standard Package Quantity is 1 PC.
The TX6A™ 10Gig Cat 6A UTP Patch Cord is a 1-Meter, Blue cord constructed of 24 AWG, unshielded, twisted pair stranded, LSZH (60332-1) cable with high-performance modular plugs. Its MaTriX Tape Technology limits alien crosstalk, ensuring 10 Gb/s transmission. The tangle-free latch prevents snags and ensures a fast release, streamlining moves, adds, and changes. Enabled with RapidID, the product has pre-installed barcodes for simple port mapping using RapidID software.

UTP6AL1MBU

The TX6A™ 10Gig Cat 6A UTP Patch Cord is a 1-Meter, Blue cord constructed of 24 AWG, unshielded, twisted pair stranded, LSZH (60332-1) cable with high-performance modular plugs. Its MaTriX Tape Technology limits alien crosstalk, ensuring 10 Gb/s transmission. The tangle-free latch prevents snags and ensures a fast release, streamlining moves, adds, and changes. Enabled with RapidID, the product has pre-installed barcodes for simple port mapping using RapidID software.

Frequently Asked Questions

What types of fuses does Littelfuse offer for industrial applications?

Littelfuse offers UL Class fuses, high-speed fuses, medium voltage fuses, 10 x 38 mm fuses, and solar fuses for industrial applications.

What are Littelfuse high-speed fuses used for?

High-speed fuses protect critical power semiconductor devices against short circuits in power conversion applications like inverters and variable-speed drives.

What is the purpose of Littelfuse medium voltage fuses?

E-rated and R-rated medium voltage fuses protect transformers, potential transformers, feeders, and motor circuits, with designs for various current, voltage, and mounting configurations.

What are the voltage and amperage ranges for 10 x 38 mm fuses?

10 x 38 mm fuses are available with ratings from 125 to 1000 volts and 1/10 to 30 amperes.

What is the maximum voltage for Littelfuse solar fuses?

Littelfuse offers solar fuses and holders up to 1500 Vdc for photovoltaic applications.

How can customers get technical support for Littelfuse products?

Customers can contact Littelfuse technical support via phone at +1-800-TEC-FUSE (800-832-3873) in the US & Canada, or by email at [email protected].

What are the benefits of Littelfuse fuse blocks and holders?

Littelfuse fuse blocks and holders are selected for their compact designs, indication features, and flexibility of DIN-rail mounting.

What is the function of POWR-BLOKS power distribution blocks?

POWR-BLOKS power distribution blocks provide a safe and convenient method for splicing cables and managing power distribution within panels and systems.

What protection do feeder protection relays offer?

Feeder protection relays protect circuits from overcurrent, ground faults, phase loss, overload, and other detrimental conditions.

What is unique about the Industrial Shock-Block® GFCI?

The Industrial Shock-Block® GFCI is the first permanently connected special-purpose GFCI that meets UL Standard 943C Class C and Class D for people protection in industrial facilities.

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.