Mersen STXR277V3Y50N - 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. 277/480 Volts 3P Wye system type with N-G mode .
Mersen

STXR277V3Y50N

Alternate Item Number: 782001437541

UPC: 782001437541

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Specification Sheet

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Overview

The Mersen Surge-Trap® Type 1 XR Series, identified by SKU STXR277V3Y50N, represents a pinnacle of industrial surge protection technology, engineered to meet and exceed the stringent requirements of UL1449 Third Edition. This advanced Surge Protective Device (SPD) is specifically designed for robust performance in demanding electrical environments, offering unparalleled protection for critical infrastructure and sensitive equipment. At the core of the XR Series' superior safety and reliability is Mersen's proprietary TPMOV® (Thermal Protected Metal Oxide Varistor) technology. This integrated safety feature ensures that even under extreme surge conditions or internal component failure, the device will safely disconnect from the power line without causing a short circuit or fire hazard, a critical consideration for industrial safety protocols. The compact and versatile design of the Surge-Trap® XR Series allows for exceptional installation flexibility. Whether deployed at the main service entrance to protect the entire facility or integrated into specific control panels for localized protection of sensitive electronics, this SPD adapts seamlessly to diverse application needs. Its line or load installation capability further simplifies integration into existing electrical systems, minimizing downtime and installation complexity. This makes it an ideal solution for retrofitting older systems or specifying for new construction where space and accessibility are key factors. Engineered for 277/480 Volt, 3-Phase Wye systems, the STXR277V3Y50N model provides comprehensive protection with N-G (Neutral-Ground) mode coverage. This specific configuration is crucial for effectively mitigating transient overvoltages that can originate from various sources, including lightning strikes, utility grid switching, and internal equipment operation. By clamping these damaging voltage spikes, the XR Series SPD safeguards motors, control systems, PLCs, variable frequency drives (VFDs), and other essential industrial components from premature failure, costly repairs, and operational disruptions. Key features and benefits of the Mersen Surge-Trap® Type 1 XR Series include: * **UL1449 Third Edition Compliance:** Ensures adherence to the highest industry safety and performance standards. * **TPMOV® Technology:** Provides integrated thermal protection for maximum safety and reliability, preventing catastrophic failure. * **Compact and Flexible Design:** Facilitates easy installation at service entrances or within control panels. * **Line or Load Installation:** Offers versatile deployment options to suit various system architectures. * **277/480V 3P Wye System Compatibility:** Specifically designed for common industrial power configurations. * **N-G Mode Protection:** Offers comprehensive surge suppression for neutral-to-ground transients. * **Ideal for Replacement:** A superior upgrade or replacement for existing surge arrestors, offering enhanced protection. The Mersen Surge-Trap® XR Series is an indispensable component for industries such as manufacturing, data centers, utilities, transportation, and building automation, where uninterrupted power and equipment longevity are paramount. By investing in this advanced SPD solution, businesses can significantly reduce the risk of electrical damage, improve operational uptime, and ensure the overall integrity of their electrical infrastructure. Mersen's long-standing reputation for quality and innovation in electrical protection makes the Surge-Trap® XR Series a trusted choice for safeguarding valuable assets against the unpredictable nature of power surges.
  • Mersen Surge-Trap® Type 1 XR Series SPD
  • Meets UL1449 Third Edition requirements
  • Features integrated TPMOV® technology for enhanced safety
  • Compact design with flexible line or load installation
  • Ideal for 277/480V 3P Wye systems with N-G mode protection

Specifications

Application
AC Distribution Power supplies Drive Protection Fire Alarms Control Panels Telecommunications Residential IT / Data centers
Brand Name
Mersen
Mode
N-G
Mounting
Din Rail / Panel / Bracket
Poles
3P Wye
Series
XR Series
Short Circuit Rating
200 kA
Short-Circuit Rating
200 kA
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
277/480 VAC
Package Dimensions (L x W x H)
11 IN x 6.25 IN x 4.5 IN
Package Dimensions (L x W x H)
27.94 cm x 15.875 cm x 11.43 cm
Package Weight (Imperial)
1.680 L
Package Weight (Metric)
0.762 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.