Mersen ST1000PV - 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. 1000 Volts PV system type .
Mersen

ST1000PV

Alternate Item Number: ST1000PV

UPC: 782001402105


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Overview

The Mersen Surge-Trap® ST1000PV is a high-performance, no-fuse surge protective device (SPD) engineered for 1000V PV systems. Featuring Mersen's patented TPMOV® technology, this modular SPD offers advanced overvoltage protection without the need for additional overcurrent protection devices. Its fail-safe, self-protected design ensures reliable operation, while the integrated visual indicator provides immediate status feedback (Green = Functional, Red = Replace). For enhanced monitoring, a remote indicator option is available, transmitting status to critical control circuitry via Form C dry contacts. Designed for ease of installation and retrofit, the ST1000PV mounts directly onto a 35mm DIN-rail. Its reversible chassis allows for flexible cable entry from either the top or bottom, simplifying wiring in various enclosure configurations. The device boasts replaceable modules with mechanical coding to prevent incorrect replacements, ensuring system integrity. With a high short circuit current rating (SCCR) of 200kA and a surge current rating (Imax) of 50kA, it is suitable for a wide range of low voltage applications, including industrial control panels, water treatment facilities, smart grid and LV metering, and traffic/ITS applications. Key technical specifications include a nominal discharge current (In) of 10-20kA (8x20 μs) and a response time of less than 1 nanosecond. The wire range accommodates 4-14 AWG (25mm² – 2.5mm²) solid or stranded copper wire, with a recommended torque of 35.4 lbs-in (4.0 Nm). The ST1000PV is IP20 finger-safe and constructed with UL94 V0 flammability rated material. It operates reliably within an ambient temperature range of -40°F (-40°C) to +185°F (85°C). Approvals include ANSI/UL 1449 5th Edition, Open Type 1 SPD Listed (File E210793), ANSI/IEEE C62.41.1, C62.41.2, C62.45, and RoHS compliance. Mersen backs the Surge-Trap® ST1000PV with a 5-year warranty, underscoring its commitment to quality and durability.
  • 1000V PV System Type SPD with Mersen's patented TPMOV® technology
  • No-fuse, fail-safe, self-protected design with visual status indicator
  • DIN-rail mountable with reversible chassis for flexible cable entry
  • High SCCR of 200kA and Imax of 50kA for robust protection
  • UL 1449 5th Edition, Open Type 1 SPD Listed; RoHS Compliant

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
DIN-rail
Frequency Rating
50/60 HZ
Material
PET (Polyethelene Terphthalate)
Mounting
DIN Rail
Mounting
DIN-rail
Mounting Type
DIN-rail mountable
Operating Temperature, Maximum
185 F
Operating Temperature, Maximum
85 C
Operating Temperature, Minimum
-40 F
Operating Temperature, Minimum
-40 C
Phase
Photovoltaic
Series
Surge-Trap®
Short Circuit Rating
10 kA
Short-Circuit Rating
10 kA
Size
3.58 x 2.1 x 2.7;90.932 x 53.34 x 68.58 in;mm
Size
Small footprint
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
Special Features
Easy installation or retrofit DIN-rail mountable Fail-safe, self-protected design Remote indicator (optional) Visual indicator IP20 finger-safe design Small footprint No additional overcurrent protection devices required 2-year warranty
Standard
ANSI/UL 1449 4th Edition, Type 1 Component Assembly SPD, File E210793 ANSI/IEEE C62.41.1, C62.41.2, C62.45 RoHS Compliant
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
DIN-RAIL UL CSA TYPE 1
UL SPD Type
Type 1 Component Assembly
Voltage Rating
1000 VAC
Package Dimensions (L x W x H)
4.88 IN x 2.88 IN x 2.75 IN
Package Dimensions (L x W x H)
12.3952 cm x 7.3152 cm x 6.985 cm
Package Weight (Imperial)
0.893 L
Package Weight (Metric)
0.405 kg
Power supply for DIN-rail

PS-60

Power supply for DIN-rail
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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.