Mersen 60321J - Fuse Block 600VAC 600VDC Class J 30A 1-Pole Pressure Plate
Mersen

60321J

Alternate Item Number: 60321J

UPC: 782001750121

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Multiplier: 10

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Overview

The Mersen 60321J is a single-pole Class J fuse block designed for 600VAC/DC applications, rated at 30A. This model features pressure plate connectors, ensuring a secure and reliable connection for copper conductors with a wire range of #4-14 AWG. The insulator is constructed from glass-filled polycarbonate (GFPC), providing verified dielectric strength exceeding 2500V. This fuse block meets UL4248 (formerly UL512) standards and is UL listed (Guide IZLT, File E52283) and CSA certified (class 6225, File 32169). It is compatible with Class J fuses such as AJT, A4J, and HSJ, and offers a high Short-Circuit Current Rating (SCCR) of 200kA. The pressure plate connector design simplifies installation and maintenance, with a recommended torque of 10 in-lbs (2.3 N-m). Designed for industrial and commercial electrical protection systems, the Mersen 60321J is ideal for applications requiring reliable overcurrent protection in 600V systems. Its robust construction and compliance with stringent safety standards make it a dependable choice for critical infrastructure. Manufactured in the USA, this fuse block is distributed by Gross Automation.
  • Rated for 600VAC/DC, 30A continuous current
  • Pressure plate connectors for secure copper wire connection (#4-14 AWG)
  • Glass-filled polycarbonate (GFPC) insulator with >2500V dielectric strength
  • UL4248 (formerly UL512) compliant, UL listed (Guide IZLT, File E52283), CSA certified (class 6225, File 32169)
  • Compatible with Class J fuses (AJT, A4J, HSJ) and 200kA SCCR

Specifications

AC Voltage Rating
600 V
Amperage Rating
30 A
Brand Name
Mersen
Class
Class J
Connection
Pressure Plate
DC Voltage Rating
600 V
Material
Glass Filled Polycarbonate
Maximum Operating Temperature
80 C
Mounting
Direct Screw Mount
Number Of Poles
1
Phase
1
Size
4 x 1.65 x 2.12 in
Size
101.6 x 41.91 x 53.848 mm
Special Features
Class J Blocks (600V) use with AJT, A4J, HSJ
Standard
All class J fuse blocks meet the requirements of UL4248 (formerly UL512) UL listed Guide IZLT, File E52283 CSA certified class 6225, File 32169
Type
UL/CSA Fuse Bases
Voltage Rating
600 VAC
Package Dimensions (L x W x H)
4 in x 1.65 in x 2.12 in
Package Dimensions (L x W x H)
101.6 mm x 41.91 mm x 53.848 mm
Package Weight (Imperial)
0.260 lb
Package Weight (Metric)
0.118 kg
Fuse Block 600VAC 600VDC Class H/K 30A Adder Screw

60310

Fuse Block 600VAC 600VDC Class H/K 30A Adder Screw
600V CLASS J BLOCK 30A 1 POLE NON-ID

LFJ60030-1C

600V CLASS J BLOCK 30A 1 POLE NON-ID
DR4/8 SF DIN2

1SNA110368R1200

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.