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Littelfuse SPDN-B120-3Y - 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 SPDN-B120-3Y Surge protection devices (SPDs) provide equipment protection from transient overvoltage…

Alternate Item Number: SPDN-B120-3Y

UPC: 079458294798


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Installation InstructionsCAD File3D CAD Model (STEP)Specification Sheet

Contact for Pricing

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

Overview

Protect your critical equipment from costly damage and downtime with the Littelfuse SPDN-B120-3Y Surge Protection Device (SPD). Designed for 1+0 configuration sub-distribution board applications, this SPD effectively mitigates transient overvoltage events that can occur in microseconds. By limiting these overvoltages, the SPDN-B120-3Y safeguards sensitive electronics, ensuring operational continuity. This device is suitable for nominal voltages ranging from 60 V to 600 V, offering broad compatibility for various industrial and commercial power systems. The Littelfuse SPDN-B120-3Y is manufactured in the USA, ensuring quality and reliability. Its primary function is to absorb and divert excess voltage away from connected equipment, preventing catastrophic failures and reducing maintenance costs associated with surge-induced damage. Implementing this SPD is a proactive measure to enhance the longevity and performance of your electrical infrastructure. The SKU for this model is SPDN-B120-3Y. It falls under the UNSPSC code 39121610 for surge protective devices. Invest in robust surge protection to maintain uninterrupted operations and protect your valuable assets from unpredictable electrical disturbances.
  • Protects equipment from transient overvoltage events.
  • Limits overvoltage to equipment, preventing damage.
  • Suitable for 1+0 configuration sub-distribution boards.
  • Supports nominal voltages from 60 V to 600 V.
  • Manufactured in the USA for quality assurance.

Specifications

Application
Equipment protection from transient overvoltages
Brand Name
Littelfuse
Special Features
NEMA style for external panel mount
Standard
UL, cUL
Sub Brand
SPDN Series
Type
UL Type 1 Surge Protection
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
Symmetrical DIN rail 2m 35x15x1,5 steel z-b

50000043

Symmetrical DIN rail 2m 35x15x1,5 steel z-b
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 is the maximum surge current rating for the SPDN-B series?

The SPDN-B series has a maximum surge current rating of up to 130 kA per phase.

What is the response time for the SPDN-B series surge protector?

The response time for the SPDN-B series is less than 25 nanoseconds for L-N / N-PE tA.

What is the operating temperature range for this surge protective device?

The operating temperature range is -35 °C to +85 °C (-31 °F to +185 °F).

What are the direct modes of protection offered by the SPDN-B series?

The SPDN-B series offers direct modes of protection including L-N, L-G, and N-G.

What is the UL Type rating for the SPDN-B series surge protectors?

The SPDN-B series has a UL Type 1 rating.

Does the SPDN-B series have a thermal protection feature?

Yes, the SPDN-B series features thermally protected MOV to eliminate catastrophic failure.

How does the SPDN-B series indicate its operating state or fault condition?

An external LED indicator is present, with one green LED for each phase to identify service requirements.

What is the remote contact switching capacity for the SPDN-B series?

The remote contact switching capacity is AC: 240 V/2 A and 125 V/1 A.

What are the dimensions of the SPDN-B series product?

The product dimensions are H 3.25 inches; W 5.02 inches; D 2.93 inches.

What is the nominal system voltage and phase configuration for SPDN-B120-3Y?

The SPDN-B120-3Y has a nominal system voltage of 208/120 V and is a 3 Phase WYE configuration.

How to Install the SPDN-B120-3Y Surge Protective Device

This guide provides step-by-step instructions for installing the SPDN-B120-3Y Surge Protective Device (SPD) safely and correctly.

Estimated time: 45m

Tools needed:

Screwdriver, Wire strippers, Multimeter

Supplies needed:

Mounting screws, Terminal connectors

  1. Verify the installation environment

    Ensure the installation area is clean, dry, and free from hazardous conditions. Confirm that the SPD is rated for the voltage of the power distribution system.

  2. Power down the panel

    Remove power from the panel where the SPD will be installed. Use a multimeter to confirm that the panel is de-energized before proceeding.

  3. Mount the SPD

    Securely mount the SPD to the panel using appropriate mounting screws. Ensure it is positioned close to the circuit to minimize lead lengths.

  4. Connect the conductors

    Connect the SPD conductors to the corresponding terminals: black for energized, white for neutral, green for ground, and orange for Hi-Leg if applicable. Ensure all connections are short and straight.

  5. Check system bonding

    Verify that the system is properly bonded according to NEC® standards. Ensure there are no faults present before energizing the SPD.

  6. Energize the system

    Restore power to the panel and confirm the SPD is functioning correctly by checking the operation indicators. 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.