Mersen ST2403PDM - Surge-Trap® Surge Protective Device is a no-fuse surge suppressor. The Surge-Trap is a UL 1449 Third Edition compliant modular style surge protective device that is DIN-rail mountable featuring a fail-safe self-protected design, visual indicator and a small foot print. A remote indicator option provides status to critical control circuit. The Surge-Trap provides advanced overvoltage protection utilizing Mersen's patented TPMOV® technology without additional protection devices. 240 Volts 3P Delta system type with microswitch .
Mersen

ST2403PDM

Alternate Item Number: 782001361624

UPC: 782001361624

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Specification Sheet

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Overview

The Mersen Surge-Trap® ST2403PDM represents a cutting-edge solution for industrial overvoltage protection, engineered to safeguard critical electrical systems from transient surges. As a no-fuse surge suppressor, this device simplifies installation and maintenance while delivering robust performance. It is fully compliant with UL 1449 Third Edition standards, ensuring it meets stringent safety and performance benchmarks for surge protective devices (SPDs) in North America. Engineered for demanding industrial environments, the ST2403PDM features a modular, DIN-rail mountable design, allowing for seamless integration into existing control panels and electrical enclosures. Its compact footprint conserves valuable space, a critical consideration in densely populated industrial control systems. The device boasts a fail-safe, self-protected design, meaning it can withstand multiple surge events without requiring external fuses or overcurrent protection devices, thereby reducing system complexity and potential failure points. At the core of the Surge-Trap ST2403PDM's advanced protection capabilities lies Mersen's patented TPMOV® (Thermally Protected Metal Oxide Varistor) technology. This proprietary technology offers superior surge suppression by effectively diverting excess voltage away from sensitive equipment. Unlike conventional MOVs, TPMOVs are inherently thermally protected, preventing catastrophic failure and thermal runaway, even under severe surge conditions. This inherent safety feature is paramount for ensuring continuous operation and preventing costly downtime. Key features of the Mersen Surge-Trap ST2403PDM include: * **UL 1449 Third Edition Compliance:** Guarantees adherence to the highest industry safety and performance standards. * **No-Fuse Design:** Simplifies installation and reduces maintenance requirements. * **DIN-Rail Mountable:** Facilitates easy and secure mounting in standard electrical enclosures. * **Fail-Safe Self-Protected Design:** Enhances reliability and operational continuity. * **Patented TPMOV® Technology:** Provides advanced, thermally protected surge suppression. * **Visual Indicator:** Offers immediate status feedback on the device's operational health. * **Remote Indicator Option (Microswitch):** Enables remote monitoring of the SPD's status, crucial for critical control circuits and automated systems. * **Compact Footprint:** Ideal for space-constrained industrial applications. This specific model, the ST2403PDM, is designed for 240 Volt, 3-Phase Delta systems. The inclusion of a microswitch provides an additional layer of control and monitoring, allowing for integration into SCADA systems or alarm panels to alert operators to any potential issues with the surge protection. The Mersen Surge-Trap ST2403PDM is an ideal choice for protecting sensitive electronic equipment, motor control centers, PLCs, variable frequency drives (VFDs), and other critical assets in industries such as manufacturing, water treatment, food and beverage processing, and petrochemicals. By investing in Mersen's proven surge protection technology, facility managers and engineers can significantly reduce the risk of equipment damage, minimize unplanned downtime, and ensure the reliable operation of their industrial processes. Mersen's long-standing reputation for quality and innovation in electrical protection makes the Surge-Trap ST2403PDM a trusted component for safeguarding valuable industrial infrastructure.
  • Mersen Surge-Trap ST2403PDM, 240V 3P Delta Surge Protective Device
  • UL 1449 Third Edition Compliant for reliable overvoltage protection
  • No-fuse, fail-safe self-protected design with TPMOV® technology
  • Modular, DIN-rail mountable with a compact footprint for easy installation
  • Includes visual indicator and a microswitch for remote status monitoring

Specifications

Application
AC/DC distribution Power supplies Industrial automation Telecommunications Motor controls and starter systems Programmable logic controller (PLC) applications Power transfer equipment HVAC applications AC drives UPS systems Security systems IT / Data centers Medical equipment
Brand Name
Mersen
Connection
Box
Mounting
DIN-rail
Mounting Type
DIN-Rail
Poles
3P Delta
Series
Surge-Trap
Short Circuit Rating
200 kA
Short-Circuit Rating
200 kA
Special Features
Easy installation or retrofit Din-rail mountable Fail-safe /self-protected design Remote indicator (optional) with 3 pin NO/NC contact IP20 finger-safe design Visual indicator Small foot print No additional overcurrent protection devices needed
Standard
UL 1449 Third Edition, File No E210793 Type 1 Component Assembly IEC 61643-1 ANSI/IEEE C62.41 CE RoHS compliant
Sub Brand
Surge-Trap®
Type
Surge-Trap® SPD
Type Of Indicators
Microswitch
Voltage Rating
240 Vac
Package Dimensions (L x W x H)
3.58 IN x 2.8 IN x 2.7 IN
Package Dimensions (L x W x H)
9.0932 cm x 7.112 cm x 6.858 cm
Package Weight (Imperial)
1.100 L
Package Weight (Metric)
0.499 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.