Mersen STXT03S1004XA - The Surge-Trap® Type 1 XT Series offers Advanced Technology. The XT features TPMOV® technology inside making it the safest product available. With line or load side installation flexibility, this unit is a great fit from the service entrance all the way down to each distribution and/or branch panel. 120/240 Volts high leg delta system type with alarm .
Mersen

STXT03S1004XA

Alternate Item Number: 782001442057

UPC: 782001442057

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Overview

The Mersen Surge-Trap® Type 1 XT Series (SKU: STXT03S1004XA) represents the pinnacle of surge protective device (SPD) technology, engineered to safeguard critical electrical infrastructure from transient voltage spikes. Designed for 120/240V high leg delta systems, this Type 1 device integrates Mersen’s proprietary TPMOV® (Thermal Protected Metal Oxide Varistor) technology, ensuring unparalleled safety and reliability in industrial and commercial environments. Unlike conventional varistor-based solutions, TPMOV® technology actively monitors thermal conditions, preventing catastrophic failure and extending operational lifespan—even under extreme surge conditions. This advanced SPD is purpose-built for mission-critical applications where downtime is unacceptable. Its line or load side installation flexibility makes it adaptable to service entrance panels, distribution boards, and branch circuits, providing comprehensive protection from the grid to the endpoint. The XT Series excels in high-leg delta configurations, a common requirement in industrial facilities, data centers, and renewable energy systems where phase imbalances are prevalent. With an integrated alarm system, operators receive immediate notification of surge events or device status, enabling proactive maintenance and minimizing risk exposure. Mersen’s reputation as a leader in electrical protection solutions is built on decades of innovation and reliability. The Surge-Trap® XT Series embodies this legacy, offering a compact yet robust design that withstands harsh environmental conditions while maintaining peak performance. Typical applications span across manufacturing plants, healthcare facilities, telecom infrastructure, and utility substations—anywhere sensitive electronics or critical machinery demand superior surge mitigation. Professionals trust Mersen for its adherence to stringent industry standards (UL 1449 Type 1, IEEE C62.41), ensuring compliance with global safety and performance benchmarks. Installation is streamlined thanks to the XT Series’ modular design, which accommodates both new construction and retrofit projects. The device’s high surge current rating (typical for Type 1 SPDs) handles repeated transient events without degradation, while its UL-listed components guarantee long-term dependability. For engineers and facility managers, the XT Series reduces total cost of ownership by eliminating the need for redundant protection layers and minimizing downtime from equipment failures. Whether protecting PLCs, variable frequency drives, or entire panel boards, this SPD delivers the performance and peace of mind required in today’s high-stakes electrical environments. Choose Mersen Surge-Trap® XT Series for a solution that combines cutting-edge technology with field-proven reliability. Backed by Mersen’s global support network and a commitment to electrical safety, the STXT03S1004XA is the intelligent choice for professionals who demand the best in surge protection.
  • TPMOV® technology for superior surge protection and thermal safety
  • Type 1 UL 1449 rated for service entrance and distribution panels
  • Line or load side installation flexibility for versatile deployment
  • Integrated alarm system for real-time surge event notifications
  • Compact, robust design for harsh industrial environments

Specifications

Application
Service Entrance AC Distribution Power supplies Drive Protection Large Control Panels Telecommunications IT / Data centers
Brand Name
Mersen
Connection
Box
Mounting
Screw
Poles
3P High Leg Delta
Series
XT Series
Series
Surge-Trap XT Series
Short Circuit Rating
200 kA
Short-Circuit Rating
200 kA
Special Features
UL 1449 Third Edition Listed (Sept 2009) Type 1 SPD – All UL required OCP & safety coordination included inside Can be installed line-side or load-side of main disconnect 20kA Nominal discharge current 200kA SCCR (most models) UL 96A Lightning Protection Master Label compliant (@20kA, In) NEMA 4X polycarbonate enclosure – UL 746C(f1) & UL 94-5VA TPMOV&reg, Technology Inside All MOV suppression elements monitored Filtering - AC sinewave tracking filter with EMI/RFI filtering up to -50dB from 10khz to 100mhz Phase-loss monitoring (toggles LED and dry contacts) Ten-year Warranty
Standard
UL 1449 Third Edition, cUL, UL 1283 R/C UL File: VZCA.E210793 RoHS Compliant IEC 61643 CE Burn-In tested prior to shipment UL 96A lighting protection master label
Sub Brand
Surge-Trap®
Type
Surge-Trap Type 1 & 2
Type Of Indicators
LED
Voltage Rating
120/240 V
Voltage Rating
120/240 Vac
Voltage Rating
240 Vac
Package Dimensions (L x W x H)
10 IN x 10 IN x 5.5 IN
Package Dimensions (L x W x H)
25.4 cm x 25.4 cm x 13.97 cm
Package Weight (Imperial)
5.250 L
Package Weight (Metric)
2.381 kg
Ethernet SHDSL Extender

DDW-120

Ethernet SHDSL Extender
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
DIN Rail ? DIN 35

ARH 1656

DIN Rail ? DIN 35
24U 21.34W 31.5D CABINET BLK

REFK1904231BK1

24U 21.34W 31.5D CABINET BLK
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
DataCom Enclosure Pkg, Bulletin DPVD (PROLINE® Voice and Data Package - PROLINE Voice and Data Package), Size/Dims: 2000x700x800mm, Material: Steel, Finish: Lt Gray

PDCP2078

DataCom Enclosure Pkg, Bulletin DPVD (PROLINE® Voice and Data Package - PROLINE Voice and Data Package), Size/Dims: 2000x700x800mm, Material: Steel, Finish: Lt Gray
6U PERF PANEL

PPFS19010BK

6U PERF PANEL
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.

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.
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
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.

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.