Mersen STXR240H05A The most popular range in the STX series offering, the Surge-Trap® Type 1 STXR meets…
Alternate Item Number: STXR240H05A
UPC: 782001470326
Contact for Pricing
Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.
Overview
- Meets UL1449 Fourth Edition requirements
- Features integrated TPMOV® technology for enhanced safety
- Compact design with flexible line or load installation
- Ideal for branch panel and individual equipment protection
- 240/120V, L-G, L-N, L-L, High Leg Delta compatibility
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 |
Connection Type | Line or Load Installation |
Current Rating | 50 kA per phase |
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 |
Mounting Type | Branch Panel or Individual Equipment |
Operating Temperature, Maximum | 185 F |
Operating Temperature, Maximum | 85 C |
Operating Temperature, Minimum | -40 F |
Operating Temperature, Minimum | -40 C |
Phase | High Leg Delta |
Poles | L-G, L-N, L-L, High Leg Delta |
Series | STXR |
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 |
Size | Compact |
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 |
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 |
Standard | ANSI/UL 1449 5th Edition, Type 1 SPD, File E210793 CSA C22.2, Type 1 SPD UL96A Lightning Protection RoHS Compliant |
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 |
Type | NEMA UL CSA TYPE 1 |
Type of Indicators | LED and Remote Audible Alarm |
UL SPD Type | Type 1 |
Voltage Rating | 240/120 V |
Package Weight (Imperial) | 1.600 L |
Package Weight (Metric) | 0.726 kg |
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Frequently Asked Questions
What is the operating temperature range for Surge-Trap SPDs?
The operating and storage temperature range for Surge-Trap SPDs is -40ºF (-40ºC) to +185ºF (85ºC).
What is the warranty period for the STZ Series Surge-Trap?
The Surge-Trap STZ Series comes with a 15-year product warranty.
What is the response time for Mersen Surge-Trap devices?
The response time for Mersen Surge-Trap devices is less than 1 nanosecond per phase.
What is the Short Circuit Current Rating (SCCR) for the STZ Series?
The STZ Series has a Short Circuit Current Rating (SCCR) of 200kA, permitting direct connection to most electrical services.
What is the nominal discharge current for the STXT Series?
The nominal discharge current (In) for the STXT Series, using an 8x20 μs waveform, is 20kA.
What is the warranty for the STXT and STXP Surge-Trap series?
The Surge-Trap STXT and STXP Series both come with a 10-year manufacturer's warranty.
What is the maximum continuous operating voltage (MCOV) for STZ240S?
The MCOV for the STZ240S is 150V L-N, 150V L-G, 276V L-L, and 150V N-G.
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.
What is the surge current rating for the STXR Series?
The STXR Series has a surge current rating of 50kA per phase and per mode.
What does the LED status indicator on Surge-Trap devices signify?
A green LED indicates the device is functional, while an 'OUT' or red LED signifies it needs replacement.
How to Install the STXR240H05A Surge Protective Device
This guide provides step-by-step instructions for installing and configuring the STXR240H05A Surge Protective Device to ensure optimal performance and safety.
Estimated time: 45m
Tools needed:
Screwdriver, Wire strippers, Multimeter
Supplies needed:
Mounting screws, Terminal connectors, Watertight fittings (if outdoor)
- Confirm system compatibility
Verify that the system voltage and configuration match the SPD voltage and configuration before proceeding with the installation.
- Turn off power
Ensure all power supplying the equipment is turned off and confirm that the equipment and all sources are de-energized to prevent electrical shock.
- 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 and keeping leads straight and short.
- Mount the SPD
Secure the SPD to the mounting surface using the provided mounting screws, ensuring it is firmly attached.
- Make electrical connections
Connect the SPD according to the wiring diagram provided, trimming leads to the shortest length possible and avoiding loops or sharp bends.
- Energize the system
Turn the power back on and verify 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.