Mersen STXR120P05A The most popular range in the STX series offering, the Surge-Trap® Type 1 STXR meets…
Alternate Item Number: STXR120P05A
UPC: 782001474287
Contact for Pricing
Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.
Overview
- UL listed Type 1 Surge Protective Device (SPD) meeting ANSI/UL 1449 5th Edition standards.
- Features Mersen TPMOV® technology for enhanced safety and reliability.
- 50kA surge current rating per phase and per mode; 200kA SCCR.
- NEMA 4X non-metallic enclosure for indoor/outdoor use.
- Compact design with 36" leads for easy installation in 3/4" knockouts.
- LED status indicator and audible alarm
Specifications
Application | Branch panel and/or individual equipment protection Commercial and Industrial Distribution Panels Control Panels |
Brand Name | Mersen |
Connection | Pre-wired |
Connection | Pre-wired with 3 ft 12 AWG conductors |
Connection Type | Line or Load |
Current Rating | 50 kA |
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 | Compact Design |
Mounting Type | Line or Load Side |
Mounting Type | Branch Panel / Equipment |
Mounting Type | Line or Load Side Installation |
Operating Temperature, Maximum | 185 F |
Operating Temperature, Maximum | 85 C |
Operating Temperature, Minimum | -40 F |
Operating Temperature, Minimum | -40 C |
Phase | 1 |
Poles | Single Phase |
Poles | 1P |
Poles | L-G, L-N |
Series | STXR |
Series | STX |
Short Circuit Rating | 200 kA |
Short-Circuit Rating | 200 kA |
Size | Compact |
Size | 3.25 x 3.35 x 3.35;82.55 x 85.09 x 85.09 in;mm |
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 |
Type Of Indicators | LED and Remote Audible Alarm Audible Alarm |
UL SPD Type | Type 1 |
Voltage Rating | 120 V |
Package Weight (Imperial) | 1.600 L |
Package Weight (Metric) | 0.726 kg |
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Frequently Asked Questions
What is the surge current rating of the Mersen STXR120P05A?
The Mersen STXR120P05A has a surge current rating (Imax) of 50kA per phase and per mode.
What type of enclosure does the STXR120P05A have?
The STXR120P05A features a NEMA 4X non-metallic enclosure, making it suitable for both outdoor and indoor use.
What is the operating voltage for the STXR120P05A?
The Mersen STXR120P05A is designed for system voltages up to 600VAC, with this specific unit rated for 120VAC.
Does the STXR120P05A require additional overcurrent protection?
No, the Mersen STXR Series, including the STXR120P05A, does not require additional overcurrent protection.
What is the response time of the STXR120P05A?
The response time for the Mersen STXR120P05A is less than 1 nanosecond per phase.
What does the LED indicator on the STXR120P05A signify?
The LED indicator on the STXR120P05A shows Green for Functional status and is OUT when the device needs replacement.
How to Install the STXR120P05A Surge Protective Device
This guide provides step-by-step instructions for installing the STXR120P05A Surge Protective Device to protect your equipment from transient overvoltages.
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 SPD voltage and configuration before proceeding with the installation.
- Turn off power
Ensure that 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
Choose a mounting location for the SPD that is as close to the equipment as possible, keeping leads straight and short. Ensure the LED status indicator will be visible.
- Mount the SPD
Securely mount the SPD to the chosen location using appropriate mounting screws, ensuring it is level and stable.
- Make electrical connections
Connect the electrical leads according to the wiring diagram provided. For optimal performance, trim leads to the shortest length possible and avoid sharp bends.
- Energize and verify operation
Turn the power back on and check the green LED status indicator. If the LED is on, the device is functioning properly.
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.