
Mersen STXT43S1004X The Surge-Trap® Type 1 XT Series offers Advanced Technology. The XT features TPMOV®…
Alternate Item Number: 782001429102
UPC: 782001429102
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Contact for Pricing
Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.
Overview
- Advanced Type 1 Surge Protective Device (SPD) with integrated TPMOV® technology
- Designed for 230/400 Volt, 3-Phase Wye (Y) electrical systems
- Flexible installation: suitable for line or load side mounting
- Provides robust protection for service entrances, distribution panels, and branch circuits
- Ensures enhanced safety and reliability against transient overvoltages
Specifications
Application | Service Entrance AC Distribution Power supplies Drive Protection Large Control Panels Telecommunications IT / Data centers |
Brand Name | Mersen |
Connection | Box |
Mounting | Screw |
Mounting Type | Line or Load Side |
Poles | 3P Wye |
Poles | 3P |
Series | XT Series |
Series | XT |
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®, 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 | 230/400 VAC |
Voltage Rating | 400 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 |

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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
What is the maximum discharge current rating?
The maximum discharge current is 100kA per phase, with a SCCR of 200kA for most models.
What is the operating temperature range for this SPD?
The operating and storage temperature range is from -40°C to +85°C.
What wiring sizes are supported for field wiring?
The device supports field wiring with #8-10 AWG wire sizes.
What type of enclosure does the SPD have?
The enclosure is NEMA 4X polycarbonate, meeting UL 746C(f1) & UL 94-5VA standards.
What is the response time of the Surge-Trap XT Series SPD?
The response time for this SPD is less than 1 nanosecond.
How can I tell if the SPD has reached its end of life?
A visual indicator shows GREEN for OK and RED for REPLACE.
What is the nominal discharge current rating?
The nominal discharge current is 20kA for most models.
What are the dimensions of the SPD?
The dimensions are 6 inches x 6 inches x 4 inches.
What is the weight of the Surge-Trap XT Series SPD?
The weight of the unit is 5 lbs or 2.3 kg.
What approvals does the Surge-Trap XT Series SPD have?
It is UL 1449 Fourth Edition Listed, UL 1283, RoHS Compliant, and IEC 61643, CE certified.
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.






