Authorized Mersen Distributor
Mersen STT24803PDG - Mersen's Surge-Trap® Type 1 SPD is a fail-safe and economical solution for applications that require a NEMA-style SPD. It is UL 1449 Third Edition approved and offers a wide range of voltage configurations to meet all needs in its class. The Surge-Trap Type 1 SPD features Mersen's patented TPMOV® technology eliminating the need for additional overcurrent protection, thus providing substantial cost savings. 480 Volts 3P Delta system type .

Mersen STT24803PDG Mersen's Surge-Trap® Type 1 SPD is a fail-safe and economical solution for applications…

Alternate Item Number: 782001421540

UPC: 782001421540

Documents & Media
Specification Sheet

Contact for Pricing

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

Overview

The Mersen Surge-Trap® Type 1 SPD (SKU: STT24803PDG) is a UL 1449 Third Edition-approved surge protection device designed for 480V, 3-phase Delta systems. This NEMA Type 1 SPD integrates Mersen’s patented TPMOV® (Thermal Protected Metal Oxide Varistor) technology, eliminating the need for external overcurrent protection such as fuses or circuit breakers. The device provides fail-safe operation, safely disconnecting from the line in the event of internal failure to prevent further damage or hazards. With a nominal discharge current rating of 20kA and a surge capacity of 450kA per phase, it offers robust defense against transient overvoltages, including lightning strikes, ensuring uninterrupted power for critical industrial infrastructure. The Surge-Trap Type 1 SPD is ideal for protecting motor control centers, HVAC systems, manufacturing lines, and data processing facilities. Its NEMA Type 1 enclosure shields internal components from dust and incidental contact, making it suitable for indoor installations. The device features a wide voltage range, EMI/RFI filtering, and a bright LED status indicator for easy monitoring. Backed by a 15-year warranty, this economical solution reduces installation costs and component expenses while meeting stringent ANSI/UL 1449, CSA C22.2, and IEEE C62.41 standards.
  • UL 1449 Third Edition approved for Type 1 SPD installations
  • Patented TPMOV® technology eliminates need for external overcurrent protection
  • Nominal discharge current rating: 20kA per phase
  • Surge capacity: 450kA per phase
  • NEMA Type 1 enclosure for indoor installations
  • EMI/RFI filtering for enhanced signal integrity
  • Bright LED status indicator for easy monitoring
  • 15-year manufacturer warranty
  • Designed for 480V, 3-phase Delta systems
  • Fail-safe operation with thermal disconnect capabilities

Specifications

Application
AC distribution Power supplies Industrial Commercial Telecommunications Residential IT / Data centers
Brand Name
Mersen
Connection
Pre-wired With 16 (0.4m) 12 AWG Conductors
Mounting
Panel
Nema Rating
NEMA 1
Poles
3P Delta
Series
Surge-Trap Type 1 SPD
Short Circuit Rating
200 kA
Short-Circuit Rating
200 kA
Special Features
Compact design Easy to mount No additional overcurrent protection devices required 200kA Short circuit current rating (SCCR) UL 1449 Third Edition Type 1 Listed Nominal discharge current (In) of 20KA (10KA on select models) For indoor, NEMA 2 applications For outdoor, NEMA 4X applications Status LEDs Wire markers 2 year warranty
Standard
UL 1449 Third Edition Approved, File No E210793 Type 1 Listed for United States Type 2 Listed for Canada RoHS compliant ANSI/IEEE C62.41
Sub Brand
Surge-Trap®
Type
Surge-Trap Type 1 & 2
Type Of Indicators
LED
Voltage Rating
480 VAC
Package Dimensions (L x W x H)
8 IN x 6 IN x 4 IN
Package Dimensions (L x W x H)
20.32 cm x 15.24 cm x 10.16 cm
Package Weight (Imperial)
1.208 L
Package Weight (Metric)
0.548 kg
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 about Mersen

What industries and applications are Mersen products used for?

Mersen products are used across diverse industrial sectors including solar power, electric vehicles, buildings/construction, industrial automation, power distribution, HVAC, elevators, telecommunications, and specialty manufacturing. Key application areas include circuit protection, surge protection, battery module protection, electrical safety systems, and power management for residential, commercial, and utility-scale installations.

What are the main product lines offered by Mersen?

Mersen offers five primary electrical power product lines: IEC and UL/CSA Fuses and Fusegear, Surge Protection, Low Voltage Disconnect Switches, Power Distribution Blocks, and Engineered Solutions. Their comprehensive range includes specialized components like high-speed fuses, modular fuse holders, surge arresters, and custom-engineered electrical protection systems for industrial and power management applications.

What are the key features of Mersen products?

Mersen products feature advanced electrical protection and power management solutions with key characteristics including finger-safe design, compact modularity, and high-performance safety features. Their product lines span electrical power components like fuses, surge protection, power distribution blocks, and specialized solutions for industrial, solar, and building applications. Critical features include UL/CSA approvals, high short-circuit current ratings, and innovative technologies like the Fuse Control™ program that minimize electrical risks and optimize system performance.

What environmental ratings do Mersen products have?

Mersen products meet rigorous environmental ratings across multiple standards, including UL 508A Type 1, 2, 3, 4, 4X, 12, and 13, CSA Type 1, 2, 3, 4, 4X, 12, and 13, and NEMA Type 1, 2, 3, 4, 4X, 12, and 13. They feature IEC 60529 IP66 protection, with enhanced UV inhibitors for outdoor weathering and operating temperatures ranging from -40°C to 130°C (-40°F to 266°F). These ratings ensure superior protection in wet, corrosive, and challenging industrial environments.

What accessories are available for Mersen products?

Mersen offers multiple accessories for their fuse blocks and systems, including safety pullers (DFC3M and DFC3LP), DIN-rail adapters (DRM), bus bars, auxiliary contacts, and specialized mounting hardware. Key accessories include the DFC3M safety puller for 1-1/2" x 13/32" midget or Class CC fuses, the DRM adapter for mounting 303 series fuse blocks on DIN-rail, and UltraSafe fuse module accessories like bus bars and auxiliary contacts that enable module interconnection and monitoring.

How are Mersen products typically installed?

Mersen products are typically installed in electrical distribution systems, control panels, and industrial automation environments using multiple mounting options. These include service entrance panel mounting, distribution panel installation, control panel DIN rail mounting, and custom engineered solutions like Fused Coordination Panelboards. Installation depends on the specific product type, such as fuses, surge protective devices, or switches, and is designed to provide electrical protection and circuit safety in various industrial and commercial applications.

What certifications and standards do Mersen products comply with?

Mersen products are certified to multiple international standards, including UL (Underwriters Laboratories), CSA (Canadian Standards Association), CCC (China Compulsory Certification), and EAC (Eurasian Conformity). Our products meet rigorous safety and performance standards for industrial applications across North America, China, Russia, and other global markets, ensuring compliance and reliability in electrical power and advanced materials solutions.

What technical support does Mersen offer?

Mersen provides comprehensive technical support through multiple channels, including technical experts located in your time zone who can assist with product selection, application guidance, and troubleshooting. Their Fuse Control™ program offers a free Fuse Inventory Audit & Analysis, and customers can access technical resources through their sales representatives and online platform ep.mersen.com.