Mersen STP230TNM - Surge-Trap® Pluggable SPD provides advanced overvoltage protection. Utilizing Mersen's patented TPMOV® design, which does not require fuses, a fuse holder or additional wiring in meeting the UL 1449 Third Edition standards thus providing substantial cost savings and reduced installation times. It also features a visual indicator, easy installation, fail-safe design, mechanical coding and remote monitoring. The Surge-Trap Pluggable SPD base is designed to be mounted on 35mm DIN-rail while plugs are easily replaceable upon failure without touching the base or the hassle of rewiring. 230 Volts TN system type .
Mersen

STP230TNM

Alternate Item Number: 782001410896

UPC: 782001410896

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Overview

The Mersen Surge-Trap® Pluggable SPD, SKU STP230TNM, offers advanced overvoltage protection for 230V TN systems. This device features Mersen's patented TPMOV® technology, eliminating the need for fuses, fuse holders, or additional wiring, which significantly reduces installation time and costs. It meets ANSI/UL 1449 5th Edition, Open Type 1 SPD standards, ensuring compliance and reliability. The STP230TNM is designed for easy installation on a 35mm DIN-rail and boasts a pluggable design for effortless module replacement without rewiring. Key features include a visual indicator for immediate status monitoring (Green = Functional, Red = Replace), a fail-safe, self-protected design, and mechanical coding to prevent installation errors. Its high short circuit current rating (SCCR) of 200kA and surge current rating (Imax) of 50kA make it suitable for industrial control panels, water treatment facilities, smart grid applications, and traffic/ITS systems. The nominal discharge current rating (In) is 10-20kA (8x20 μs), with a response time of less than 1 nanosecond. The device offers a degree of protection of IP20 (finger-safe) and operates within a temperature range of -40°C to +85°C. A remote status indicator option (Form C Dry Contacts) is also available for critical control circuitry. Mersen provides a 5-year warranty on this product.
  • Patented TPMOV® technology eliminates need for fuses or additional wiring.
  • Pluggable design for easy module replacement without rewiring.
  • 35mm DIN-rail mountable for simplified installation.
  • Meets ANSI/UL 1449 5th Edition, Open Type 1 SPD standards.
  • Visual indicator (Green/Red) and optional remote status indicator.

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
Connection Type
Pluggable
Material
TPMOV
Mounting
DIN-rail
Mounting Type
35mm DIN-rail
Series
Surge-Trap
Series
Surge-Trap Pluggable SPD
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) Visual indicator IP20 finger-safe design 2 year warranty No additional overcurrent protection devices needed Easy to replace modules
Standard
UL 1449 Third Edition Approved, File No E210793 Type 1 Component Assembly IEC 61643-1 RoHS compliant ANSI/IEEE C62.41 CE
Sub Brand
Surge-Trap®
Type
Surge-Trap® SPD
Type Of Indicators
Microswitch
Voltage Rating
230 VAC
Package Dimensions (L x W x H)
3.58 IN x 0.7 IN x 2.7 IN
Package Dimensions (L x W x H)
9.0932 cm x 17.78 mm x 6.858 cm
Package Weight (Imperial)
0.340 L
Package Weight (Metric)
0.154 kg
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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.