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Mersen STXR120V3Y50N - The Surge-Trap® Type 1 XR Series meets requirements for UL1449 Third Edition and is ideal for the replacement of surge arrestors. The XR Series SPD feature TPMOV® technology inside making them the safest product available. With a small, compact design and line or load installation flexibility the XR series is the perfect fi from service entrance all the way down to a specific control panel. 120/208 Volts 3P Wye system type with N-G mode .

Mersen STXR120V3Y50N The Surge-Trap® Type 1 XR Series meets requirements for UL1449 Third Edition and is…

Alternate Item Number: 782001446215

UPC: 782001446215


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 XR Series (SKU: STXR120V3Y50N) is a UL1449 Fourth Edition-listed surge protective device (SPD) designed for 120/208V 3P Wye systems with N-G mode. Featuring Mersen’s proprietary TPMOV® (Thermal Protected Metal Oxide Varistor) technology, this compact SPD delivers reliable surge protection while preventing catastrophic failure under extreme conditions. Unlike conventional varistors, TPMOV® devices safely disconnect from the circuit during overloads, ensuring continuous protection without risk of fire or equipment damage. The XR Series supports both line-side and load-side installation, making it ideal for deployment from service entrances to dedicated control panels. Its NEMA 4X polycarbonate enclosure ensures durability in indoor or outdoor environments, while the tri-mount installation kit (pipe nipple, bracket, DIN-rail) provides flexible mounting options. Applications span AC distribution, power supplies, drive protection, fire alarms, control panels, telecommunications, and IT/data centers. The SPD’s 50kA surge capacity and -40°C to +85°C operating temperature range make it suitable for harsh industrial environments. Integral 3' #10AWG leads simplify wiring, and the product includes a two-year warranty. For branch panel or individual equipment protection, the XR Series is a direct replacement for obsolete surge arrestors, offering measurable reliability and longevity.
  • UL1449 Fourth Edition-listed Type 1 SPD for 120/208V 3P Wye systems with N-G mode
  • TPMOV® technology prevents catastrophic failure under overload conditions
  • 20kA nominal discharge current, 200kA SCCR, 50kA surge capacity
  • Line or load installation flexibility with NEMA 4X polycarbonate enclosure
  • Tri-mount installation kit (pipe nipple, bracket, DIN-rail) included

Specifications

Application
AC Distribution Power supplies Drive Protection Fire Alarms Control Panels Telecommunications Residential IT / Data centers
Brand Name
Mersen
Connection Type
Line or Load
Material
Poly
Mounting
Din Rail / Panel / Bracket
Poles
3P Wye + N-G
Poles
3P+N
Series
Surge-Trap Type 1 XR Series
Series
XR Series
Short Circuit Rating
200 kA
Short-Circuit Rating
200 kA
Size
Compact
Special Features
UL 1449 Third Edition Listed,Type 1 SPD 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) Large block 50kA TPMOV&reg, Pre-wired with 3’ (1m) of #10 AWG conductor Standard NEMA 4X polycarbonate enclosure Tri-mount installation kit Included (pipe nipple, bracket, DIN-rail) Two-year warranty
Standard
UL 1449 Third Edition File VZCA.E210793 IEC 61643 CE ANSI/IEEE C62.41 Burn-In tested prior to shipment UL 96A lighting protection master label (Most Models)
Sub Brand
Surge-Trap®
Type
Surge-Trap Type 1 & 2
Type Of Indicators
LED
Voltage Rating
120/208 VAC
Package Dimensions (L x W x H)
3.57 IN x 3.26 IN x 4.13 IN
Package Dimensions (L x W x H)
9.0678 cm x 8.2804 cm x 10.4902 cm
Package Weight (Imperial)
1.600 L
Package Weight (Metric)
0.726 kg
Power supply for DIN-rail

PS-60

Power supply for DIN-rail
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.
Symmetrical DIN rail 2m 35x15x1,5 steel z-b

50000043

Symmetrical DIN rail 2m 35x15x1,5 steel z-b
5-port Ethernet Switch

SDI-550

5-port Ethernet Switch
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.
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
24U 21.34W 31.5D CABINET BLK

REFK1904231BK1

24U 21.34W 31.5D CABINET BLK
6U PERF PANEL

PPFS19010BK

6U PERF PANEL
Fiber cable ODC to SC duplex - 670mm

Fiber cable ODC SC Duplex 670mm

Fiber cable ODC to SC duplex - 670mm
Cable Manager, fits 19-inch open rack, Black, Steel

ECK19H

Cable Manager, fits 19-inch open rack, Black, Steel
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

What is the operating temperature range for the Surge-Trap XR Series?

The operating and storage temperature range is -40°C to +85°C.

What is the maximum discharge current rating?

The maximum discharge current is 50kA per phase.

What voltage range does the XR Series SPD support?

The XR Series SPD supports voltages from 120V to 600V AC.

What is the nominal discharge current rating for most models?

Most models have a nominal discharge current rating of 20kA.

What is the Short Circuit Current Rating (SCCR) for most models?

Most models have a SCCR of 200kA.

What type of enclosure does the XR Series use?

The XR Series uses a NEMA 4X Polycarbonate enclosure.

What standards does the Surge-Trap XR Series meet?

The XR Series meets UL1449 Fourth Edition, IEC 61643, and ANSI/IEEE C62.41 standards.

Can the XR Series be installed on the line-side or load-side?

Yes, the XR Series can be installed on the line-side or load-side of the main disconnect.

What is the response time of the XR Series SPD?

The response time for the XR Series SPD is less than 1 nanosecond.

How is the end of life for the SPD indicated?

A visual indicator shows GREEN for OK and OUT for REPLACE.

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.