Mersen 20605 - Fuse Block 250VAC 250VDC Class H/K 60A Adder Box with Reinforced Clip
Mersen

20605

Alternate Item Number: 20605

UPC: 782001759209

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Overview

The Mersen SKU 20605 is a 60 Ampere, 250 Volt AC/DC Class H/K fuse block designed for reliable circuit protection. This specific model features an adder box configuration, allowing for modular expansion to create multi-pole fuse blocks as needed. It is equipped with reinforced clips made from high-conductivity tin-plated copper, ensuring a secure and durable connection. The insulator is constructed from Glass-Filled Polycarbonate (GFPC), verified to exceed 2500V dielectric strength. This fuse block is compatible with Class H and K fuses and is designed for copper wire applications, specifically accommodating wire ranges from #2 to #14 AWG. The box connector type is suitable for aluminum or copper conductors. Mersen's design prioritizes heat cycling performance and meets or exceeds OEM "no aluminum" specifications when used with copper wire. The recommended mounting screws for 60A fuse blocks are 1/4" (.250" dia.). This unit is manufactured in the USA. Its robust construction and flexible configuration make it a practical choice for various industrial electrical systems requiring dependable overcurrent protection.
  • 60 Ampere, 250 Volt AC/DC rating
  • Class H/K fuse compatibility
  • Glass-Filled Polycarbonate (GFPC) insulator
  • Reinforced tin-plated copper clips for secure connection
  • Adder box design for modular multi-pole configurations

Specifications

AC Voltage Rating
250 V
Amperage Rating
60 A
Brand Name
Mersen
Class
Class H/K
Connection
Box with Reinforced Clip
DC Voltage Rating
250 V
Material
Glass Filled Polycarbonate
Maximum Operating Temperature
80 C
Mounting
Direct Screw Mount
Number Of Poles
1
Phase
1
Size
4.75 x 1.31 x 2.12 in
Size
120.65 x 33.274 x 53.848 mm
Standard
All fuse blocks meet the requirements of UL 4248 UL listed, guide IZLT, File E52283 UL recognized component guide IZLT2, file E52283 CSA certified class 6225, File 32169
Type
UL/CSA Fuse Bases
Voltage Rating
250 VAC
Package Dimensions (L x W x H)
4.75 in x 1.31 in x 2.12 in
Package Dimensions (L x W x H)
120.65 mm x 33.274 mm x 53.848 mm
Package Weight (Imperial)
0.200 lb
Package Weight (Metric)
0.091 kg
Fuse Block 250VAC 250VDC Class H/K 60A 1-Pole Box

20601

Fuse Block 250VAC 250VDC Class H/K 60A 1-Pole Box
250V CLASS H BLOCK 60A 1 POLE

LFH25060-1C

250V CLASS H BLOCK 60A 1 POLE
DR4/8 SF DIN2

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DR4/8 SF DIN2

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.