Littelfuse SPD2-300-4P0-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

SPD2-300-4P0-R

Alternate Item Number: SPD2-300-4P0-R

UPC: 079458253504


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Overview

The **Littelfuse SPD2-300-4P0-R** is a high-performance **surge protection device (SPD)** engineered to shield sensitive electrical equipment in **1+0 configuration sub-distribution board applications** with nominal voltages ranging from **60V to 600V**. Designed to mitigate the devastating impact of transient overvoltage events—typically lasting mere microseconds—this SPD acts as a critical line of defense, preventing costly equipment damage, operational downtime, and potential system failures. By clamping excessive voltage spikes to safe levels, the SPD2-300-4P0-R ensures the longevity and reliability of downstream electrical and electronic systems, making it an indispensable component in modern industrial and commercial power distribution networks. **Key Features and Technical Advantages:** - **Wide Voltage Range Compatibility:** The SPD2-300-4P0-R supports nominal voltages from **60V to 600V**, making it versatile for a broad spectrum of sub-distribution applications, including industrial machinery, commercial buildings, and utility interfaces. - **1+0 Configuration:** This configuration is ideal for applications where a single line of protection is required, such as in dedicated circuits or where space constraints limit the use of multi-pole configurations. - **Microsecond Response Time:** Surge events occur in fractions of a second, and the SPD2-300-4P0-R is engineered to respond within this critical window, ensuring that transient overvoltages are clamped before they can propagate and cause damage. - **Robust Construction:** Built to withstand harsh industrial environments, the device features durable housing and components designed for long-term reliability, even in the presence of dust, moisture, or temperature fluctuations. - **Compliance and Safety:** Littelfuse products are rigorously tested to meet international safety standards, including UL, IEC, and other regional certifications, ensuring compliance with global regulatory requirements. **Typical Applications and Industry Use Cases:** The **SPD2-300-4P0-R** is particularly well-suited for environments where electrical systems are vulnerable to transient overvoltages, such as: - **Industrial Facilities:** Manufacturing plants, refineries, and processing units where sensitive control systems, PLCs, and variable frequency drives (VFDs) are critical to operations. - **Commercial Buildings:** Office complexes, hospitals, and data centers that rely on uninterrupted power to protect IT infrastructure, lighting systems, and HVAC controls. - **Renewable Energy Systems:** Solar and wind power installations where inverters and grid-tie systems require protection from lightning-induced surges or switching transients. - **Telecommunications:** Base stations, data centers, and network infrastructure where signal integrity and equipment longevity are paramount. - **Utilities and Infrastructure:** Substations, water treatment plants, and transportation systems where downtime is not an option. **Why Choose Littelfuse for Surge Protection?** Littelfuse is a **global leader in circuit protection**, with over a century of innovation and expertise in safeguarding electrical systems. The company’s surge protection devices are trusted by engineers and facility managers worldwide for their **reliability, performance, and adherence to stringent quality standards**. By integrating Littelfuse SPDs into your power distribution system, you gain: - **Peace of Mind:** Knowing that your equipment is protected against unpredictable transient events, reducing the risk of costly repairs and unplanned outages. - **Operational Continuity:** Minimizing downtime by preventing damage to critical systems, ensuring that your operations run smoothly and efficiently. - **Long-Term Cost Savings:** Investing in high-quality surge protection upfront can significantly reduce long-term maintenance and replacement costs. - **Expert Support:** Access to Littelfuse’s technical expertise, including application engineering, product selection guidance, and compliance assistance. **Installation and Maintenance Considerations:** Proper installation is key to maximizing the effectiveness of the **SPD2-300-4P0-R**. Professionals should follow these best practices: - **Location:** Install the SPD as close as possible to the protected equipment to minimize the length of exposed wiring, which can act as an antenna for surges. - **Grounding:** Ensure a low-impedance grounding path to safely dissipate surge energy, complying with local electrical codes. - **Upstream Protection:** For optimal performance, consider pairing the SPD with upstream protection devices to create a layered defense strategy. - **Regular Inspections:** Periodically check the device for signs of wear, damage, or degradation, and replace it if necessary to maintain peak performance. **Conclusion:** The **Littelfuse SPD2-300-4P0-R** is more than just a component—it’s a critical investment in the reliability and longevity of your electrical systems. Whether you’re protecting industrial machinery, commercial infrastructure, or renewable energy assets, this SPD delivers **unmatched performance, durability, and peace of mind**. Trust Littelfuse, a name synonymous with circuit protection excellence, to keep your operations running smoothly, even in the face of unpredictable power surges.
  • 60V to 600V nominal voltage range for versatile sub-distribution applications
  • 1+0 configuration ideal for single-line protection in industrial/commercial systems
  • Microsecond response time to clamp transient overvoltages before damage occurs
  • Rugged construction for reliable performance in harsh environments
  • Compliant with UL, IEC, and other global safety 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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Fiber cable ODC to SC duplex - 670mm

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Power supply for DIN-rail

PS-60

Power supply for DIN-rail
DIN Rail ? DIN 35

ARH 1656

DIN Rail ? DIN 35
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PDCP2078

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6U PERF PANEL

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STP6X12MIG

This TX6A 10Gig Cat 6A STP Patch Cord is a 12-Meter, Int'l Grey cord constructed of 26 AWG, shielded, twisted pair, stranded, CM/LSZH cable and with high-performance modular plugs. Its tangle-free latch prevents snags and ensures a fast release, streamlining moves, adds, and changes. The slender strain relief boot provides easy access in high-density applications. Enabled with RapidID, the product has pre-installed barcodes for simple port mapping using RapidID software.
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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.

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.