Mersen STXT91S1004X - 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. 600 Volts corner grounded delta system type   .
Mersen

STXT91S1004X

Alternate Item Number: 782001429195

UPC: 782001429195


Documents & Media
Specification Sheet

Contact for Pricing

Overview

The Mersen Surge-Trap® Type 1 XT Series (STXT91S1004X) offers advanced surge protection for 600V corner grounded delta systems. Engineered with Mersen's industry-leading TPMOV® technology, this unit provides premium safety and reliability. It features a substantial 200kA surge capacity per phase, ensuring extended operational life and superior single-impulse withstand capability, crucial for critical industrial applications. Certified to ANSI/UL 1449 4th Edition and CSA C22.2 standards for Type 1 SPD installations, the STXT91S1004X meets rigorous compliance requirements. Its NEMA 4X-rated enclosure guarantees dependable performance in both indoor and outdoor environments, protecting against contaminants. Installation flexibility is a key advantage, with support for line or load-side configurations, making it suitable from service entrances down to distribution and branch panels. The integrated EMI/RFI filter offers up to -50dB attenuation from 10kHz to 100MHz, enhancing power quality by mitigating interference. Status monitoring is provided by dual LED indicators: a green LED signifies operational readiness, while phase-specific LEDs alert to potential maintenance needs. Optional accessories like audible alarms and remote dry contacts further enhance system integration for proactive maintenance and remote monitoring. The Surge-Trap® XT Series supports up to 10 modes of protection (L-N, L-L, L-G, N-G) for comprehensive transient coverage. A 10-year manufacturer's warranty underscores Mersen's commitment to quality and product longevity. This SPD is ideal for manufacturing facilities, data centers, renewable energy systems, and utility substations, safeguarding sensitive equipment and minimizing costly downtime. With its advanced features and robust design, the Mersen Surge-Trap® STXT91S1004X is a vital component for safeguarding electrical infrastructure.
  • Designed with industry-leading Mersen TPMOV® Technology (internally fused)
  • Premium 200kA surge capacity per phase for longer life
  • Includes EMI/RFI filter for cleaner power quality
  • NEMA 4X enclosure for indoor or outdoor use
  • Up to 10 Modes of Protection (L-N, L-L, L-G, N-G)
  • LED status and phase loss indicators for real-time monitoring
  • Flexible line or load side installation from service entrance to branch panels
  • ANSI/UL 1449 4th Edition and CSA C22.2 Type 1 SPD certified
  • Optional audible alarms and remote dry contacts for enhanced monitoring
  • 10-year warranty for long-term reliability and investment protection

Specifications

Application
Service Entrance AC Distribution Power supplies Drive Protection Large Control Panels Telecommunications IT / Data centers
Brand Name
Mersen
Connection
Box
Mounting
Screw
Short Circuit Rating
200 kA
Short-Circuit Rating
200 kA
Short-Circuit Rating
200.0000 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
600 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
Power supply for DIN-rail

PS-60

Power supply for DIN-rail
RTXD Extractor Tool

6896057-1

RTXD Extractor Tool
Ring/multidrop fibre converter -  Profibus

ODW-710-F2

Ring/multidrop fibre converter - Profibus
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
6U PERF PANEL

PPFS19010BK

6U PERF PANEL
24U 24W 25D KNOCKDOWN CABINET

RCK24U25BK

24U 24W 25D KNOCKDOWN CABINET

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.