Mersen STXH120P05N The Mersen Surge-Trap® STXH120P05N is a Type 1 Surge Protective Device (SPD) designed…
Alternate Item Number: STXH120P05N
UPC: 782001488338
Contact for Pricing
Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.
Overview
- TPMOV® technology eliminates need for additional overcurrent protection
- 20kA nominal discharge current (In) with 200kA SCCR
- NEMA 4X enclosure rated for indoor/outdoor use (-40°F to +185°F)
- 1/2"-14 threaded mounting hub with pre-wired 18" 10AWG leads
- LED status indicator (green = functional, OUT = replace)
Specifications
Application | Any 120/240VAC split phase application HVAC applications Direct mounting to air condition disconnect switches |
Application | Residential Panels HVAC systems Pool and Spa equipment |
Connection | Pre-wired |
Connection Type | Screw Terminal |
Frequency | 60 Hz |
Frequency Rating | 50/60 HZ |
Material | Polycarbonate |
Mounting | Panel Mount |
Mounting Type | Threaded Hub (1/2"-14) |
Operating Temperature, Maximum | 185 F |
Operating Temperature, Maximum | 85 C |
Operating Temperature, Minimum | -40 F |
Operating Temperature, Minimum | -40 C |
Phase | 1 |
Poles | 2P+G |
Series | Surge-Trap STXH |
Size | 3.2 x 1.85 x 3.22;81.28 x 46.99 x 81.788 in;mm |
Special Features | Mersen TPMOV Technology – does not require additional overcurrent protection Compact footprint for seamless integration with AC Disconnect Switches NEMA 4X enclosure for outdoor or indoor use Fits 1/2" knockouts with 18" leads for easy installation Up to 3 Modes of Protection (L-N, L-L, and L-G) Bright LED status indicator, visible from side profile through clear cover 3-year manufacturer’s warranty, plus up to 25k connected equipment warranty (For details see Warranty Statement) |
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 |
UL SPD Type | Type 1 |
Voltage Rating | 120 VAC |
Package Dimensions (L x W x H) | 3.2 in x 1.85 in x 3.22 in |
Package Dimensions (L x W x H) | 81.28 mm x 46.99 mm x 81.788 mm |
Package Weight (Imperial) | 0.800 lb |
Package Weight (Metric) | 0.363 kg |
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Frequently Asked Questions
What is the STXH series UL listing and compliance?
The STXH series is UL listed as a Type 1 SPD and is fully compliant with UL1449 5th Edition standards.
What voltage applications is the STXH series suitable for?
The STXH series is suitable for any 120/240VAC split phase application.
What technology does the STXH series use for surge protection?
The STXH series is equipped with Mersen's TPMOV technology for surge protection.
What is the surge current rating for the STXH series?
The STXH series has a surge current rating of 50kA per phase and per mode.
What is the operating temperature range for the STXH series?
The STXH series can operate in temperatures ranging from -40ºF (-40ºC) to +185ºF (85ºC).
What is the response time of the STXH series SPD?
The response time for the STXH series is less than 1 nanosecond per phase.
What type of enclosure does the STXH series have?
The STXH series features a NEMA 4X non-metallic enclosure.
How to Install the STXH120P05N Surge Protective Device (SPD)
Installation guide for mounting and wiring the STXH120P05N Surge Protective Device (SPD).
Estimated time: 45m
Tools needed:
Screwdriver, Wire strippers
Supplies needed:
Mounting screws, Terminal connectors, Watertight fittings (for outdoor applications)
- Verify System Compatibility
Confirm that the system voltage and configuration match the SPD's voltage and configuration. Refer to the product's nameplate or datasheet for specific values.
- De-energize Equipment
Turn off all power supplying the equipment. Verify that the equipment and all power sources are de-energized before proceeding. Follow safe electrical work practices and use appropriate PPE.
- Determine Mounting Location
Select a mounting location for the SPD. It should be as close to the equipment as possible, with leads kept straight and short. If using a circuit breaker, identify its location (a 30A breaker is recommended). Position the SPD so the LED status indicator is visible.
- Mount the SPD
Mount the STXH120P05N Surge Protective Device in the determined location. For outdoor applications, ensure watertight fittings are used to maintain the NEMA 4X rating.
- Make Electrical Connections
Make the electrical connections to the SPD. For optimal performance, trim the leads to the shortest possible length, avoiding loops, coils, or sharp bends. Connect the SPD in parallel. Refer to the wiring diagram and ensure proper grounding (XON-G bonding at the upstream transformer).
- Energize and Verify Operation
Energize the system and confirm the proper operation of the green LED status indicator. A green LED indicates the unit is functioning correctly. If the LED is off, the unit may be damaged, the circuit may be de-energized, or the SPD leads may be disconnected.
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.