Mersen 550TPMOVST - Mersen's patented TPMOV® (Thermally Protected Metal Oxide Varistor ) eliminates common destructive failure modes associated with standard MOVs. Comprised of a voltage clamping device and a disconnecting apparatus that monitors the status of the metal oxide disk inside the TPMOV, the device is securely disconnected in the event of an overvoltage by an arc shield. Upon failure, the TPMOV is also equipped with a visual pin indicator as well as a normally open microswitch providing remote indication, if applicable. 550 Volts Short Leads with indication series.
Mersen

550TPMOVST

Alternate Item Number: 550TPMOVST

UPC: 782001412418


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Specification Sheet

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Overview

The Mersen 550TPMOVST is a Thermally Protected Metal Oxide Varistor (TPMOV®) designed to eliminate common destructive failure modes found in standard MOVs. This patented technology integrates a voltage clamping device with a sophisticated disconnecting apparatus that continuously monitors the status of the internal metal oxide disk. In the event of an overvoltage, the TPMOV® is securely disconnected from system power by an integrated arc shield, ensuring fail-safe operation. The 550TPMOVST features short leads and includes both a visual pin indicator and a normally open microswitch for remote indication of end-of-life status, enhancing operational reliability and simplifying maintenance. This component is suitable for OEM design and build applications requiring robust surge protection. It is designed for use in Type 1 SPD applications and is RoHS compliant. The Mersen TPMOV technology provides superior surge suppression performance and longevity for critical electrical systems. Key features include its patented TPMOV technology, built-in visual and remote indication options, and the elimination of the need for additional upstream overcurrent protective devices like fuses. The 550TPMOVST is a crucial component for safeguarding sensitive electrical equipment from transient overvoltages.
  • Patented TPMOV® (Thermally Protected Metal Oxide Varistor) technology
  • Eliminates common destructive failure modes of standard MOVs
  • Integrated voltage clamping device and status monitoring disconnect
  • Arc shield ensures secure disconnection during overvoltage events
  • Visual pin indicator and normally open microswitch for remote indication

Specifications

Application
Surge protective devices and systems AC / DC distribution systems High voltage power supplies Telecommunications equipment Motor control systems Computer related products PLC applications Power transfer switches
Application
For OEM design and build
Brand Name
Mersen
Connection
Solder
Connection Type
Short Leads
Frequency Rating
50/60 HZ
Material
Metal Oxide Varistor with Thermally Protected Mechanism
Material
PET (Polyethelene Terphthalate)
Mounting
PCB Mount
Operating Temperature, Maximum
185 F
Operating Temperature, Maximum
85 C
Operating Temperature, Minimum
-40 F
Operating Temperature, Minimum
-40 C
Series
TPMOV7
Short Circuit Rating
200 kA
Short-Circuit Rating
200 kA
Size
2.35 x 1.69 x 0.63;59.69 x 42.926 x 16.002 in;mm
Special Features
Industry-leading TPMOV technology available in 50kA and 75kA surge capacities Consistent footprint with 25–40mm MOVs Built-in visual/remote indication optional No additional overcurrent protective device (fuses) required
Standard
ANSI/UL 1449 5th Edition, Type 1 Component Assembly SPD, File E210793 RoHS Compliant
Type
Thermally Protected MOV (TPMOV)
Type
TPMOV (Thermally Protected MOV)
Type Of Indicators
Microswitch
UL SPD Type
Type 1 Component Assembly
Voltage Rating
550 VAC
Package Dimensions (L x W x H)
2.35 IN x 1.69 IN x 0.63 IN
Package Dimensions (L x W x H)
5.969 cm x 4.2926 cm x 16.002 mm
Package Weight (Imperial)
0.120 L
Package Weight (Metric)
0.054 kg
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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

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Super-Safeway® Multiple Outlet Box, Extended Depth, 2-Sided, F2 (1/2") Cord Grip Body, with Flip Lids for (2) Duplex Not Included
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ECK19H

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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

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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.