Mersen STXT21S1004X - 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. 127/220 Volts 3P Wye system type .
Mersen

STXT21S1004X

Alternate Item Number: 782001429058

UPC: 782001429058

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Overview

The Mersen Surge-Trap® Type 1 XT Series represents the pinnacle of advanced surge protection technology, engineered to safeguard critical electrical infrastructure in demanding industrial and commercial environments. At its core lies the revolutionary TPMOV® (Thermal Protected Metal Oxide Varistor) technology, a proprietary innovation from Mersen that significantly enhances safety and reliability by providing integrated thermal disconnect capabilities. This ensures that in the event of an overcurrent or internal failure, the surge protective device (SPD) disconnects safely from the power source, preventing potential fire hazards and ensuring operational continuity. This advanced design makes the XT Series the safest surge protection solution available on the market today. Designed for versatility, the Surge-Trap® XT Series offers exceptional installation flexibility, allowing for placement on either the line or load side of the protected equipment. This adaptability makes it an ideal choice for a wide range of applications, from the main service entrance of a facility to individual distribution and branch panels. Whether protecting sensitive electronic equipment, critical machinery, or entire electrical systems, the XT Series provides robust defense against transient voltage surges that can cause equipment damage, data loss, and costly downtime. Its robust construction and high-performance components are built to withstand the rigors of industrial settings, ensuring long-term protection and peace of mind. This specific model, SKU STXT21S1004X, is configured for 127/220 Volt, 3-Phase Wye (3P Wye) system types, commonly found in various industrial power distribution networks. The 3P Wye configuration is a standard for many three-phase power systems, and ensuring proper surge protection for these systems is paramount. Mersen's commitment to quality and innovation is evident in the Surge-Trap® XT Series, providing engineers and facility managers with a reliable and effective solution for mitigating the risks associated with lightning strikes, utility switching, and other transient voltage events. By investing in Mersen's advanced surge protection, businesses can significantly reduce the likelihood of equipment failure and maintain uninterrupted operations. Key features and benefits of the Mersen Surge-Trap® Type 1 XT Series include: * **TPMOV® Technology:** Integrated thermal protection for enhanced safety and reliable disconnect. * **Type 1 SPD:** Suitable for installation at the service entrance and throughout the distribution system. * **Flexible Installation:** Can be installed on either the line or load side, offering greater application versatility. * **System Compatibility:** Specifically designed for 127/220 Volt, 3-Phase Wye (3P Wye) systems. * **Robust Construction:** Built to withstand harsh industrial environments. * **Superior Performance:** Effectively suppresses transient voltage surges, protecting valuable equipment. When selecting surge protection for critical infrastructure, the Mersen Surge-Trap® Type 1 XT Series stands out as a premier choice. Its advanced technology, coupled with Mersen's reputation for manufacturing excellence, ensures that your electrical systems are protected by a solution that is both highly effective and exceptionally safe. The UNSPSC code for this product is 39121610, indicating its classification within the surge protection device category.
  • Advanced Type 1 Surge Protection with integrated TPMOV® technology for enhanced safety.
  • Flexible line or load side installation for versatile application in service entrance to branch panels.
  • Designed for 127/220 Volt, 3-Phase Wye (3P Wye) electrical systems.
  • Safeguards critical equipment from transient voltage surges and overcurrents.
  • Reliable and robust construction for demanding industrial and commercial environments.

Specifications

Application
Service Entrance AC Distribution Power supplies Drive Protection Large Control Panels Telecommunications IT / Data centers
Brand Name
Mersen
Connection
Box
Frequency
50/60 Hz
Mounting
Screw
Poles
3P Wye
Poles
3P
Series
XT Series
Series
Surge-Trap® Type 1 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
127/220 VAC
Voltage Rating
220 VAC
Package Dimensions (L x W x H)
7.55 IN x 5.997 IN x 3.92 IN
Package Dimensions (L x W x H)
19.177 cm x 15.2324 cm x 9.9568 cm
Package Weight (Imperial)
5.000 L
Package Weight (Metric)
2.268 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.