Mersen K305012 - The innovative and comprehensive Modulostar® range of Mersen fuse-holders. Modular fuse-holders are finger-safe under IEC standards to an IP20 grade of protection, including fuse changing (with the flick of a finger). Modular fuse-holders are available in 1, 2, 3 or 4 poles, with or without visual blown fuse indicator, in IEC version or IEC + UL version. Multi-pole units can also be field assembled by ordering pin-ties assembly kit. In size 14 or 22, the range also offers the possibility to use microswitches (supplied with the holders or ordered separately) to allow remote indication. Modulostar® range is made of tough and durable thermoplastic or thermoset material. 690 Volts 25 amps 4 pole CMS 8x31 with ind series.
Mersen

K305012

Alternate Item Number: 3605340357066


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Specification Sheet

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Overview

The Mersen Modulostar® K305012 is a robust 4-pole modular fuse-holder designed for reliable circuit protection in industrial electrical systems. This unit is rated for 690 Volts and 25 Amps, making it suitable for a variety of applications. It features a visual blown fuse indicator, allowing for quick and easy identification of tripped fuses, enhancing operational efficiency and safety. The Modulostar® range, including the K305012, adheres to IEC standards, providing finger-safe operation with an IP20 grade of protection, even during fuse replacement via a simple flick of a finger. Constructed from tough and durable thermoplastic or thermoset material, this fuse-holder ensures longevity and resilience in demanding environments. The K305012 is compatible with IEC and IEC + UL versions, offering flexibility for different regional standards. Multi-pole units can be field-assembled using available pin-tie assembly kits. The Modulostar® series also supports the integration of microswitches for remote indication, further enhancing system monitoring capabilities. This specific model is designed for use with 8x31mm fuse-links and is available in sizes 14 or 22. Applications include electrical panels, control systems, and industrial machinery where dependable fuse protection is paramount. The K305012 is manufactured in the US and falls under UNSPSC code 39121627.
  • 4-pole modular fuse-holder
  • Rated for 690V and 25A
  • Finger-safe IP20 protection
  • Visual blown fuse indicator
  • Durable thermoplastic/thermoset construction

Specifications

Amperage Rating
25 A
Application
All circuits up to 500V for protection of motors, transformers, low voltage distribution, control circuits Non-load operation
Brand Name
Ferraz Shawmut
Current Rating
25 A
IP Rating
IP20
Material
Thermoplastic/Thermoset
Mounting
Installation On To DIN Rails To EN 60715
Poles
4
Series
Modulostar
Size
Size 22
Special Features
Finger safe Degree of protection: IP20 Optional visual blown fuse indicator DIN rail mounting Modular design Lockable Multi-pole assembly kit available Sealable in closed and open position Plastic material UL94V2 mini Flame retardant materials with glow wire flammability index to 960°C
Standard
IEC 60269-2 and IEC 60947-3 Compliance RoHS Compliant Plastic material: NF 16101 & 16102 Requirement 2 Compliant Shock and vibration tested for marine and railway applications
Type
IEC LV Compact fuse-holders for cylindrical fuse links
Voltage Rating
690 VAC
Package Dimensions (L x W x H)
3.19 IN x 2.8 IN x 2.38 IN
Package Dimensions (L x W x H)
8.1026 cm x 7.112 cm x 6.0452 cm
Package Weight (Imperial)
0.580 L
Package Weight (Metric)
0.263 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.