Mersen STXR240H05 The most popular range in the STX series offering, the Surge-Trap® Type 1 STXR meets…
Alternate Item Number: STXR240H05
UPC: 782001469931
Contact for Pricing
Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.
Overview
- UL1449 Fourth Edition Compliant Type 1 SPD
- Features Mersen's Safe TPMOV® Technology
- Compact Design for Flexible Installation
- Ideal for Branch Panel and Equipment Protection
- 240/120V, L-G, L-N, L-L, High Leg Delta, 50 kA per phase
Specifications
Application | Branch panel and/or individual equipment protection Commercial and Industrial Distribution Panels Control Panels |
Brand Name | Mersen |
Connection | Pre-wired with 3 ft 12 AWG conductors |
Connection | Pre-wired |
Frequency | 50-60 Hz |
Frequency Rating | 50/60 HZ |
Frequency Rating, Maximum | 60 Hz |
Frequency Rating, Minimum | 50 Hz |
Insulation | Polycarbonate |
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 |
Phase | High Leg Delta |
Short Circuit Rating | 200 kA |
Short-Circuit Rating | 200 kA |
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 |
Type Of Indicators | LED and Remote Audible Alarm |
UL SPD Type | Type 1 |
Voltage Rating | 240/120 V |
Package Weight (Imperial) | 1.500 L |
Package Weight (Metric) | 0.680 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.
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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.Frequently Asked Questions
What is the operating temperature range for Surge-Trap devices?
The operating and storage temperature range for Surge-Trap devices is –40ºF (–40ºC) to +185ºF (85ºC).
What is the response time of Mersen Surge-Trap SPDs?
The response time for Mersen Surge-Trap SPDs is less than 1 nanosecond per phase.
What is the purpose of Mersen's TPMOV technology?
TPMOV technology improves surge protection by safely disconnecting during sustained overvoltage events, preventing overheating and failure of traditional MOVs.
What is the Short Circuit Current Rating (SCCR) for STZ series SPDs?
The STZ series SPDs have a Short Circuit Current Rating (SCCR) of 200kA, permitting direct connection to most electrical services.
What is the warranty period for the Surge-Trap STZ Series?
The Surge-Trap STZ Series comes with a 15-year product warranty.
What are the available surge current ratings for the STZ Series?
The STZ series offers surge current ratings of 100, 150, 200, 300, and 450kA.
What is the warranty period for the Surge-Trap STXT Series?
The Surge-Trap STXT Series has a 10-year manufacturer's warranty.
What is the surge current rating for the STXT Series?
The STXT series has surge current ratings of 100kA and 200kA per phase.
What is the warranty period for the Surge-Trap STXP Series?
The Surge-Trap STXP Series has a 10-year manufacturer's warranty.
What is the surge current rating for the STXP Series?
The STXP series offers a surge current rating of 100kA per phase.
How to Install the STXR240H05 Surge Protective Device
This guide provides step-by-step instructions for the proper installation and initial setup of the STXR240H05 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)
- Confirm system compatibility
Verify that the system voltage and configuration match the specifications of the STXR240H05 Surge Protective Device.
- Power down the system
Turn off all power supplying the equipment and confirm that all sources are de-energized before proceeding with the installation.
- 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.
- Mount the SPD
Securely mount the STXR240H05 to the designated location using the appropriate mounting screws, ensuring it is level and stable.
- Make electrical connections
Connect the SPD according to the wiring diagram, ensuring that leads are trimmed to the shortest length possible and avoiding sharp bends.
- Energize the system
Turn the power back on and check the green LED status indicator to confirm proper operation of the SPD.
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.















