Littelfuse SPDN-D277-3Y Surge protection devices (SPDs) provide equipment protection from transient overvoltage…
Alternate Item Number: SPDN-D277-3Y
UPC: 079458297652
Contact for Pricing
Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.
Overview
- 20kA nominal surge current rating per phase; 50kA maximum surge capacity
- Direct L-N and N-G protection modes for comprehensive coverage
- Response time <25ns for rapid transient clamping
- NEMA 4X polycarbonate enclosure with ultrasonically sealed lid
- Pre-wired 18" #12 AWG pigtails for simplified installation
Specifications
Application | Equipment protection from transient overvoltages |
Brand Name | Littelfuse |
Poles | 1+0 |
Series | SPDN |
Special Features | NEMA style for external panel mount |
Standard | UL, cUL |
Sub Brand | SPDN Series |
Type | UL Type 1 Surge Protection |
Voltage Rating | 60-600 V |
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Frequently Asked Questions
What is the maximum surge current rating for this device?
The maximum surge current rating for this device is up to 50 kA per phase.
What is the operating temperature range for the SPDN-D series?
The operating temperature range is -35 °C to +85 °C (-31 °F to +185 °F).
What is the response time for L-N/N-PE protection?
The response time for L-N/N-PE is less than 25 nanoseconds.
What are the direct modes of protection offered?
The direct modes of protection are L-N and N-G.
What UL type is this surge protective device?
This surge protective device is UL Type 1.
What type of protective elements are used in this device?
Stacked High Energy MOV are used as protective elements.
What is the maximum continuous AC operating voltage for SPDN-D277-3Y?
The maximum continuous AC operating voltage for the SPDN-D277-3Y is 350V.
What is the voltage protection rating (VPR) for L-N on SPDN-D277-3Y?
The voltage protection rating for L-N on the SPDN-D277-3Y is 1200V.
What is the housing material of the SPDN-D series?
The housing material is polycarbonate with a NEMA 4X lid that is ultrasonically sealed.
How can I identify if the device needs service?
An external LED indicator quickly identifies service requirements to avoid loss of protection.
How to Install the SPDN-D277-3Y Surge Protective Device
This guide provides step-by-step instructions for installing and configuring the SPDN-D277-3Y Surge Protective Device (SPD) safely and effectively.
Estimated time: 45m
Tools needed:
Screwdriver, Wire strippers, Multimeter
Supplies needed:
Mounting screws, Terminal connectors
- Verify the installation environment
Ensure the installation area is clean, dry, and free from hazardous materials. Confirm that the SPD's voltage rating matches the power distribution system.
- Power down the panel
Disconnect power to the panel where the SPD will be installed. Use a multimeter to confirm that the panel is de-energized before proceeding.
- Mount the SPD
Remove an appropriately sized knockout from the panel. Securely mount the SPD to the panel using the provided mounting screws, ensuring it is positioned close to the panel for optimal lead length.
- Connect the conductors
Connect the SPD conductors to the appropriate terminals: black for energized lines, white for neutral, green for ground, and orange for Hi-Leg if applicable. Ensure all connections are short and straight.
- Bond the system
Verify that the system is bonded according to the National Electric Code (NEC). Ensure that the neutral conductor is bonded to ground to prevent SPD failure.
- Energize the system
Restore power to the panel and confirm the proper operation of the SPD by checking the indicator LEDs. If any alarms sound, de-energize immediately and consult the manufacturer.
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.