Mersen TI-1500 - The Shawmut Trigger Indicator is a field-mountable blown-fuse indicator which is wired parallel with the fuse to be monitored. The striker pin exerts a static force of one pound and be used to actuate a switch. It is available in 130 volt (TI-130), 600 vo 1500 Volts 70A or higher amps.
Mersen

TI-1500

Alternate Item Number: 782001909123

UPC: 782001909123

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Specification Sheet

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Overview

The Mersen TI-1500 Shawmut Trigger Indicator (SKU: TI-1500) provides essential field-mountable blown-fuse detection for high-voltage industrial systems. Engineered for reliability, this indicator is wired in parallel with fuses rated 1500V and 70A or higher, offering immediate visual and mechanical feedback upon fuse failure. Its integrated striker pin exerts a static force of one pound, enabling direct actuation of auxiliary switches, alarm systems, or control circuits. This proactive detection mechanism is crucial for preventing secondary equipment damage, minimizing costly downtime, and ensuring adherence to safety compliance standards. The TI-1500 is constructed for durability, capable of withstanding vibration, extreme temperatures, and electrical stress commonly found in industrial environments. Its compact, field-mountable design facilitates straightforward installation onto fuse blocks, panels, and enclosures. The parallel wiring configuration ensures continuous monitoring without impacting fuse performance. This indicator is particularly well-suited for applications in power distribution, substations, motor control centers, and renewable energy installations such as solar and wind farms. Compatibility extends to blade-type fuses, specifically Mersen's Form 101 high-speed semiconductor fuses and certain Class L fuses. The TI-1500 requires two midget fuse clips (for 13/32” diameter fuses) for mounting, which are available separately. The reliable one-pound striker pin force ensures consistent actuation of auxiliary switches or Add-On-Switches (AOS) for remote signaling capabilities. Mersen offers the Trigger Indicator in various voltage ratings, including 130V (TI-130), 600V (TI-600, UL Listed), and the 1500V (TI-1500) model, all requiring a minimum fuse rating of 70A.
  • Field-mountable blown-fuse indicator for 1500V, 70A+ fuses
  • Wired in parallel with fuse for continuous monitoring
  • 1-pound striker pin force for switch actuation
  • Visual and mechanical indication of fuse failure
  • Durable construction for industrial environments

Specifications

Brand Name
Ferraz Shawmut
Connection
Ferrule
Mounting
Clip
Special Features
The Shawmut Trigger Indicator is a field-mountable blown-fuse indicator which is wired parallel with the fuse to be monitored. The striker pin exerts a static force of one pound and be used to actuate a switch
Standard
UL Listed JDVS.E90426
Type
Blown Fuse Indicators
Voltage Rating
1500 VAC
Package Dimensions (L x W x H)
3.5 IN x 0.406 IN x 0.406 IN
Package Dimensions (L x W x H)
8.89 cm x 10.3124 mm x 10.3124 mm
Package Weight (Imperial)
0.050 L
Package Weight (Metric)
0.023 kg
The Shawmut Trigger Indicator is a field-mountable blown-fuse indicator which is wired parallel with the fuse to be monitored. The striker pin exerts a static force of one pound and be used to actuate a switch. It is available in 130 volt (TI-130), 600 vo 600 Volts 70A or higher amps.

TI-600

The Shawmut Trigger Indicator is a field-mountable blown-fuse indicator which is wired parallel with the fuse to be monitored. The striker pin exerts a static force of one pound and be used to actuate a switch. It is available in 130 volt (TI-130), 600 vo 600 Volts 70A or higher amps.
The Shawmut Trigger Indicator is a field-mountable blown-fuse indicator which is wired parallel with the fuse to be monitored. The striker pin exerts a static force of one pound and be used to actuate a switch. It is available in 130 volt (TI-130), 600 vo 130 Volts 70A or higher amps.

TI-130

The Shawmut Trigger Indicator is a field-mountable blown-fuse indicator which is wired parallel with the fuse to be monitored. The striker pin exerts a static force of one pound and be used to actuate a switch. It is available in 130 volt (TI-130), 600 vo 130 Volts 70A or higher amps.
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Ferraz Shawmut Nylon Fuse Pullers are fully insulated, made of high-dielectric, high impact nylon with no-slip handles and protective finger stops for greater safety when inserting fuses. Yellow color for safety. 600 Volts 600 Amps large size series.
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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.