Mersen W1019195 - British Standard fuse-link IEC BS88 gG Type A4 415VAC 240VDC 125A BTCP Offset Tag
Mersen

W1019195

Alternate Item Number: BTCP42V125

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Overview

The Mersen W1019195 is a British Standard (BS88) gG type fuse-link designed for general-purpose protection in industrial electrical systems. This fuse-link, SKU W1019195, is manufactured by Mersen and features an offset tag (BTCP) for secure mounting in fuseholders, direct bolt-on busbars, or fuse interruptors/disconnectors. It is rated for 125A with a voltage rating of 415VAC (IEC) and 240VDC (IEC). The gG designation signifies its suitability for overload protection. Key specifications include a rated breaking capacity of 80 kA AC and 40 kA DC. The pre-arcing I²t is 17000 A²s, and the clearing I²t at rated voltage is 70000 A²s. Power dissipation at In is 9.2 W, and the weight is 0.15 kg. This fuse-link complies with EN 60269-2 section II and BS 88 part 2 standards, ensuring reliable performance in demanding applications. Manufactured in the US, the W1019195 is ideal for circuits where precise fault interruption and current limitation are critical for low-voltage electrical systems.
  • Mersen BS88 gG Type A4 fuse-link
  • Rated 125A, 415VAC/240VDC
  • 80 kA AC / 40 kA DC breaking capacity
  • Offset tag (BTCP) for secure mounting
  • Complies with EN 60269-2 and BS 88 part 2

Specifications

AC Voltage Rating
415 V
Amperage Rating
125 A
Application
These fuses are designed for : “General purpose use” protection (gG type)
Brand Name
Mersen
Connection
Offset Tag
Connection Material
Tin-Plated Copper
Connection Type
Screw/Bolt
Current Rating
125 A
DC Voltage Rating
240 V
Interrupt Rating
80 kA
Mounting
Bolted
Mounting Type
Fuseholder, Busbar, Fuse Interruptors
Mounting Type
Offset Tag (BTCP), fuseholders, bolt-on busbars, fuse interruptors/disconnectors
Mounting Type
Offset Tag (BTCP)
Mounting Type
Offset Tag (BTCP), fuseholders, direct bolt-on busbars, fuse interruptors/disconnectors
Series
BS88 gG
Series
BS88 gG Type A4
Size
4.37 x 1.06 in
Size
111 x 26.9 mm
Size
Type A4
Special Features
Excellent current limitation for all overloads
Standard
EN 60269-2 section II
Type
BS Fuse-Links
Voltage Rating
415VAC 240VDC
Voltage Rating
415VAC/240VDC
Package Dimensions (L x W x H)
4.37 in x 1.12 in x 1.06 in
Package Dimensions (L x W x H)
111 mm x 28.5 mm x 26.9 mm
Package Weight (Imperial)
0.254 lb
Package Weight (Metric)
0.115 kg
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POWR-JAW clamps improve the contact between fuse and clip. The unnecessary heat from poor contact due to the loss of spring force in the clips can cause nuisance fuse opening and premature aging of surrounding components. High temperature phenolic resin knob designed for the most severe environments 7 sizes to provide effective coverage. Simple design makes installation easy.

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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.