Mersen STT2240SPG - Mersen's Surge-Trap® Type 1 SPD is a fail-safe and economical solution for applications that require a NEMA-style SPD. It is UL 1449 Third Edition approved and offers a wide range of voltage configurations to meet all needs in its class. The Surge-Trap Type 1 SPD features Mersen's patented TPMOV® technology eliminating the need for additional overcurrent protection, thus providing substantial cost savings. 120/240 Volts split phase system type .
Mersen

STT2240SPG

Alternate Item Number: 782001421489

UPC: 782001421489

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Specification Sheet

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Overview

Protect your critical infrastructure with the Mersen Surge-Trap® Type 1 SPD, SKU STT2240SPG. This advanced surge protection device (SPD) is engineered to provide robust and fail-safe protection for 120/240 Volt split-phase systems, specifically designed for applications demanding NEMA-style enclosures. As a UL 1449 Third Edition approved solution, the STT2240SPG meets stringent industry standards for safety and performance, offering peace of mind for industrial, commercial, and utility environments. Mersen's proprietary TPMOV® (Thermal Protected Metal Oxide Varistor) technology is at the core of the Surge-Trap® Type 1 SPD. This patented innovation significantly enhances safety and reliability by integrating thermal disconnect functionality directly within the MOV. This means the device inherently protects itself from overheating and potential failure, eliminating the need for separate, additional overcurrent protection devices. This integration not only simplifies installation but also leads to substantial cost savings by reducing component count and labor. The Surge-Trap® Type 1 SPD is available in a wide array of voltage configurations, ensuring a perfect fit for virtually any application within its class. Its NEMA-style form factor makes it an ideal replacement or upgrade for existing installations, facilitating seamless integration into control panels, switchgear, and other electrical enclosures. The compact design and straightforward installation process further contribute to its economic advantages, minimizing downtime and maintenance requirements. Key benefits and features of the Mersen Surge-Trap® Type 1 SPD (STT2240SPG) include: * **Fail-Safe Operation:** Integrated TPMOV® technology ensures safe shutdown in fault conditions, preventing cascading failures. * **Cost-Effective Solution:** Eliminates the need for external overcurrent protection, reducing material and installation costs. * **UL 1449 Third Edition Approval:** Meets rigorous safety and performance standards for surge protective devices. * **NEMA-Style Design:** Compatible with standard industrial enclosures and existing infrastructure. * **Wide Voltage Range:** Available in multiple configurations to suit diverse system requirements. * **Robust Protection:** Effectively safeguards sensitive electronic equipment from damaging transient overvoltages. Applications for the Surge-Trap® Type 1 SPD are extensive, including: * Industrial automation and control systems * Commercial buildings and facilities * Telecommunications infrastructure * Water and wastewater treatment plants * Renewable energy installations (solar, wind) * Motor control centers * Data centers and IT equipment By choosing Mersen, a recognized leader in electrical protection, you are investing in a product built with decades of expertise and a commitment to innovation. The Surge-Trap® Type 1 SPD (STT2240SPG) represents a smart, reliable, and economical choice for protecting your valuable assets from the unpredictable nature of electrical surges. Ensure the longevity and operational integrity of your electrical systems with Mersen's advanced surge protection technology.
  • Mersen Surge-Trap® Type 1 SPD, SKU STT2240SPG
  • 120/240 Volt split-phase system compatibility
  • NEMA-style enclosure design for industrial applications
  • UL 1449 Third Edition approved for safety and performance
  • Patented TPMOV® technology eliminates need for additional overcurrent protection

Specifications

Application
AC distribution Power supplies Industrial Commercial Telecommunications Residential IT / Data centers
Brand Name
Mersen
Connection
Pre-wired With 16 (0.4m) 12 AWG Conductors
Mounting
Panel
Nema Rating
NEMA-style
NEMA Rating
Type 1
Series
Surge-Trap Type 1 SPD
Series
Surge-Trap Type 1
Short Circuit Rating
200 kA
Short-Circuit Rating
200 kA
Special Features
Compact design Easy to mount No additional overcurrent protection devices required 200kA Short circuit current rating (SCCR) UL 1449 Third Edition Type 1 Listed Nominal discharge current (In) of 20KA (10KA on select models) For indoor, NEMA 2 applications For outdoor, NEMA 4X applications Status LEDs Wire markers 2 year warranty
Standard
UL 1449 Third Edition Approved, File No E210793 Type 1 Listed for United States Type 2 Listed for Canada RoHS compliant ANSI/IEEE C62.41
Sub Brand
Surge-Trap®
Type
Surge-Trap Type 1 & 2
Type Of Indicators
LED
Voltage Rating
120 VAC
Package Dimensions (L x W x H)
8 IN x 6 IN x 4 IN
Package Dimensions (L x W x H)
20.32 cm x 15.24 cm x 10.16 cm
Package Weight (Imperial)
1.050 L
Package Weight (Metric)
0.476 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

REFK1904231BK1

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

3085

Super-Safeway® Multiple Outlet Box, Extended Depth, 2-Sided, F2 (1/2") Cord Grip Body, with Flip Lids for (2) Duplex Not Included
Cable Manager, fits 19-inch open rack, Black, Steel

ECK19H

Cable Manager, fits 19-inch open rack, Black, Steel
DataCom Enclosure Pkg, Bulletin DPVD (PROLINE® Voice and Data Package - PROLINE Voice and Data Package), Size/Dims: 2000x700x800mm, Material: Steel, Finish: Lt Gray

PDCP2078

DataCom Enclosure Pkg, Bulletin DPVD (PROLINE® Voice and Data Package - PROLINE Voice and Data Package), Size/Dims: 2000x700x800mm, Material: Steel, Finish: Lt Gray
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.

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.