Mersen 40657G Fuse Block 480VAC 480VDC Class G 60A 2-Pole Copper Box
Alternate Item Number: 40657G
UPC: 782001230906
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Contact for Pricing
Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.
Overview
- Rated for 480VAC and 480VDC applications with 60A current capacity
- High-conductivity tin-plated copper alloy fuse clips for reliable conductivity
- Glass-filled polycarbonate (GFPC) insulators rated 2500V dielectric strength
- Copper box connector supports stranded or solid copper wire (#4 to #14 AWG)
- Unique adder-block design enables multi-pole expansion for flexible configurations
Specifications
AC Voltage Rating | 480 V |
Amperage Rating | 60 A |
Brand Name | Mersen |
Class | Class G |
Connection | Copper Box |
Connection Type | Screw Terminal |
Current Rating | 60 A |
DC Voltage Rating | 480 V |
Material | Copper, Glass-filled Polycarbonate |
Material | Glass Filled Polycarbonate |
Maximum Operating Temperature | 80 C |
Maximum Operating Temperature | 80 °C |
Mounting | Direct Screw Mount |
Number Of Poles | 2-pole |
Number Of Poles | 2 |
Phase | 2 |
Poles | 2 |
Series | 40657G |
Size | 3.78 x 1.62 x 1.4 in |
Size | 96.012 x 41.148 x 35.56 mm |
Special Features | Unique integral DIN-rail adapters for 15, 20 & 30A blocks Unique adder-block design (all ampere ratings) for design flexibility Spring reinforcing standard for 60A clips Features high conductivity copper alloy fuse clips |
Standard | All fuse blocks meet the requirements of UL 4248 UL Listed guide IZLT, File E52283 CSA Certified class 6225, File 32169 |
Type | UL/CSA Fuse Bases |
Voltage Rating | 480 VAC |
Package Dimensions (L x W x H) | 3.78 in x 1.62 in x 1.4 in |
Package Dimensions (L x W x H) | 96.012 mm x 41.148 mm x 35.56 mm |
Package Weight (Imperial) | 0.250 lb |
Package Weight (Metric) | 0.113 kg |
LFH25030-2C
The new Littelfuse Class H blocks offer many advantages over previous generations that are noted in the features and benefits section. Class H and Class R fuse blocks are dimensionally the same, but Class R blocks incorporate a rejection feature, which only allows Class R fuses to be inserted.
Frequently Asked Questions
What ampere ratings do Mersen Class G fuse blocks accommodate?
Mersen Class G fuse blocks accommodate all 15, 20, 30, and 60 ampere Class G fuses.
What types of connectors are available for Mersen Class G fuse blocks?
Connector types include box, screw, or pressure-plate connectors, compatible with a wide range of stranded or solid copper wire.
What is the dielectric strength of the GFPC insulators?
The GFPC insulators have a verified dielectric strength in excess of 2500V.
Can Mersen Class G fuse blocks be configured for multiple poles?
Yes, a unique adder block can be snapped onto 1-, 2-, or 3-pole blocks to form multi-pole segmented blocks of any desired number of poles.
What material are the fuse clips made of?
All fuse clips are made of high conductivity tin-plated copper alloy.
What is the voltage rating for Class G fuse blocks?
Voltage ratings are 600VAC for 15 and 20A fuses, and 480VAC for 30 and 60A fuses.
What is the Short Circuit Current Rating (SCCR) for these fuse blocks?
The SCCR is 100kA, or 10kA when using quick connects.
What are the temperature and flammability ratings of the GFPC insulators?
GFPC insulators are rated 1250°C RTI and have a 94V-0 flammability rating.
Do the 15, 20, and 30A blocks have integral DIN-rail adapters?
Yes, the 15, 20, and 30A blocks feature unique integral DIN-rail adapters.
Are the 60A clips reinforced?
Yes, the 60A clips feature spring reinforcing as standard.
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.