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Littelfuse SPD2-350-2P0-R - 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 SPD2-350-2P0-R Surge protection devices (SPDs) provide equipment protection from transient overvoltage…

Alternate Item Number: SPD2-350-2P0-R

UPC: 079458253542

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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 SPD2-350-2P0-R surge protection device (SPD) is a high-performance, 1+0 configuration solution engineered to shield sensitive electrical equipment from destructive transient overvoltage events in sub-distribution board applications. Designed for nominal voltage ratings between 60V and 600V, this SPD effectively limits overvoltage spikes to safe levels, preventing costly equipment damage, system failures, and unplanned downtime. With its robust construction and advanced surge suppression technology, the SPD2-350-2P0-R delivers reliable protection for industrial and commercial power distribution systems where operational continuity is critical. Surge protection devices like the Littelfuse SPD2-350-2P0-R are essential components in modern electrical infrastructure, addressing the growing threat of transient overvoltages caused by lightning strikes, switching operations, or utility grid disturbances. These events, though brief—often lasting mere microseconds—can induce voltage spikes capable of degrading insulation, damaging semiconductors, or even causing catastrophic failure in unprotected systems. By integrating the SPD2-350-2P0-R into sub-distribution boards, engineers and facility managers can ensure compliance with industry standards such as IEEE C62.41 and IEC 61643, while extending the operational lifespan of connected equipment. The 1+0 configuration of the SPD2-350-2P0-R simplifies installation and maintenance, making it an ideal choice for applications where space and efficiency are priorities. This configuration consists of a single line-to-ground protection module, optimized for systems requiring phase-to-neutral or phase-to-ground surge suppression without the complexity of multi-pole configurations. Typical applications include: - **Industrial automation systems**: Protecting PLCs, motor drives, and control panels from voltage transients in manufacturing environments. - **Commercial buildings**: Safeguarding HVAC systems, elevators, and lighting controls in office complexes, hospitals, and retail spaces. - **Renewable energy installations**: Shielding inverters and battery management systems in solar or wind power systems from grid-induced surges. - **Telecommunications infrastructure**: Ensuring uninterrupted operation of data centers, network switches, and communication towers. - **Critical infrastructure**: Supporting protection for security systems, fire alarms, and emergency lighting in facilities requiring high reliability. Littelfuse, a global leader in circuit protection solutions, has designed the SPD2-350-2P0-R to meet the demanding requirements of modern electrical systems. The device features a high-energy absorption capacity, rapid response time, and a durable housing to withstand harsh environmental conditions. Its modular design allows for easy replacement or upgrade, reducing maintenance costs and minimizing system downtime. Professionals in electrical engineering, facility management, and industrial maintenance rely on Littelfuse’s reputation for innovation and reliability when selecting surge protection solutions. Selecting the right SPD involves evaluating factors such as voltage rating, configuration, and environmental conditions. The SPD2-350-2P0-R’s wide voltage range (60V–600V) makes it versatile for use in both low- and medium-voltage sub-distribution systems. Installation is straightforward, typically involving mounting the device on a DIN rail or within a distribution panel, with clear labeling for phase and ground connections. Regular inspection and testing are recommended to ensure ongoing performance, particularly in high-risk environments where transient events are frequent. By investing in the Littelfuse SPD2-350-2P0-R, businesses can mitigate the financial and operational risks associated with power surges, ensuring continuous operation of critical systems. Whether deployed in a factory, data center, or commercial facility, this SPD provides peace of mind by delivering robust, long-lasting protection against the unpredictable nature of electrical transients.
  • Voltage rating: 60V to 600V for versatile sub-distribution applications
  • 1+0 configuration for simplified installation and maintenance
  • High-energy absorption capacity to mitigate transient overvoltage events
  • Rapid response time to limit overvoltage spikes and prevent equipment damage
  • Durable design for harsh industrial and commercial environments

Specifications

Application
Equipment protection from transient overvoltages
Brand Name
Littelfuse
Poles
1+0
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 technical support is available from Littelfuse Techline?

Techline experts can answer questions on product cross references, general technical information, engineering drawings, and application assistance.

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.

What are the voltage and ampere ratings 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.

What conditions do Littelfuse feeder protection relays guard against?

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

What is the Industrial Shock-Block® GFCI designed for?

The Industrial Shock-Block® GFCI is designed for people protection in industrial facilities and meets UL Standard 943C Class C and Class D.

How do Littelfuse resistance grounding systems help?

High-resistance grounding limits point-of-fault damage, eliminates arc-flash hazards, and prevents transit overvoltages associated with ground faults.

What kind of protection do Littelfuse voltage monitors offer?

Voltage monitors provide protection against both supply line and load side faults when the motor is running.

What functions can Littelfuse timers and flashers control?

Timers and flashers can delay starting and stopping loads, and control cycling and sequencing of motors, pumps, compressors, heaters, and lighting.

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.