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

Alternate Item Number: SPD2-300-1P1

UPC: 079458257687

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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
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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.