Mersen STXR240P05N - The Mersen STXR240P05N is a UL 1449 5th Edition Type 1 surge protective device (SPD) with TPMOV® technology. Designed as a direct replacement for outdated surge arrestors, it provides compact, flexible protection for branch panels or individual equipment. This UL-listed device supports line or load installation and meets strict safety standards for industrial and commercial applications. The STXR series is built in the US by Mersen, a leader in electrical protection solutions.
Mersen

STXR240P05N

Alternate Item Number: STXR240P05N

UPC: 782001492281


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Overview

The Mersen STXR240P05N is a UL 1449 5th Edition Type 1 Surge Protective Device (SPD) engineered for reliable protection in industrial and commercial settings. Featuring Mersen's advanced TPMOV® technology, this compact SPD is designed as a direct, high-performance replacement for outdated surge arrestors, offering enhanced safety and efficiency. With a voltage rating of 240 VAC and a current rating of 5 A, the STXR240P05N is suitable for protecting branch panels or individual critical equipment from transient voltage surges. Its NEMA Type 1 rating ensures robust protection against environmental factors. Operating across a frequency range of 50/60 Hz, this device provides consistent performance. The STXR240P05N is configured with 1P+G poles and utilizes screw terminals for secure connections. Installation flexibility is a key advantage, offering both DIN rail and surface mount options to accommodate various panel configurations. Manufactured in the USA by Mersen, a recognized leader in electrical protection solutions, the STXR series embodies quality and dependability. The blue poly construction ensures durability and easy identification. This UL-listed SPD meets stringent safety standards, providing peace of mind for critical electrical systems. SKU: STXR240P05N. UNSPSC Code: 39121610.
  • UL 1449 5th Edition Type 1 Surge Protective Device (SPD)
  • Features Mersen's advanced TPMOV® technology
  • Direct replacement for outdated surge arrestors
  • Compact and flexible protection for branch panels or individual equipment
  • UL-listed, NEMA Type 1 rated, manufactured in the US

Specifications

Application
Branch panel and/or individual equipment protection Commercial and Industrial Distribution Panels Control Panels
Frequency Rating
50/60 HZ
Material
Polycarbonate
Mounting
Panel Mount
Operating Temperature, Maximum
185 F
Operating Temperature, Maximum
85 C
Operating Temperature, Minimum
-40 F
Operating Temperature, Minimum
-40 C
Size
3.25 x 3.35 x 3.35;82.55 x 85.09 x 85.09 in;mm
Special Features
Designed with the industry leading Mersen TPMOV® Technology LED status indicator (ON = Good, OFF = Replace) NEMA 4X enclosure for outdoor or indoor use Fits 3/4" knockouts with 3' leads for easy installation Optional mounting bracket for surface mount applications Optional audible alarm and remote dry contacts For use in ANSI/UL Type 1 or 2 SPD installations Up to 10 modes of Protection (L-N, L-L, L-G optional, N-G optional) 5-year warranty
Special Features
Designed with industry leading Mersen TPMOV technology Optional mounting bracket for surface mount applications NEMA 4X enclosure for outdoor or indoor use Fits 3/4" knockouts with 3' leads for easy installation Up to 10 modes of Protection (L-N, L-L, L-G optional, N-G optional) Bright LED status indicator, visible from side profile through clear cover 5-year manufacturer’s warranty
Standard
ANSI/UL 1449 5th Edition, Type 1 SPD, File E210793 CSA C22.2, Type 1 SPD ANSI/IEEE C62.41.1, C62.41.2, C62.45 UL96A Lightning Protection RoHS Compliant
Standard
ANSI/UL 1449 5th Edition, Type 1 SPD, File E210793 CSA C22.2, Type 1 SPD UL96A Lightning Protection RoHS Compliant
Type
NEMA UL CSA TYPE 1
Type of Indicators
LED
UL SPD Type
Type 1
Package Dimensions (L x W x H)
3.25 in x 3.35 in x 3.35 in
Package Dimensions (L x W x H)
82.55 mm x 85.09 mm x 85.09 mm
Package Weight (Imperial)
1.700 lb
Package Weight (Metric)
0.771 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

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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

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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.

How to Install the STXR240D05A Surge Protective Device

This guide provides step-by-step instructions for the installation and initial setup of the STXR240D05A Surge Protective Device to ensure optimal performance.

Estimated time: 45m

Tools needed:

Screwdriver, Wire strippers, Multimeter

Supplies needed:

Mounting screws, Terminal connectors, Watertight fittings (if applicable)

  1. Confirm system compatibility

    Verify that the system voltage and configuration match the specifications of the STXR240D05A Surge Protective Device.

  2. Power down the system

    Turn off all power supplying the equipment and confirm that the equipment and all sources are de-energized to prevent electrical shock.

  3. Determine mounting location

    Select a mounting location for the SPD that is as close to the equipment as possible, ensuring that the LED status indicator will be visible.

  4. Mount the SPD

    Securely mount the STXR240D05A to the designated location using the provided mounting screws, ensuring it is level and stable.

  5. Make electrical connections

    Connect the SPD according to the wiring diagram provided, ensuring that leads are trimmed to the shortest length possible without loops or sharp bends.

  6. Energize the system

    Turn the power back on and confirm the proper operation of the green LED status indicator. If the LED is off, check connections and troubleshoot as necessary.

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.