Mersen USFMBB5 - USFM - BB 600V 3-Pole B5 phases
Mersen

USFMBB5

Alternate Item Number: USFMBB5

UPC: 782001382155

Contact for Pricing

Overview

The Mersen USFMBB5 UltraSafe Fuse Module is a robust and innovative solution designed for efficient and safe circuit protection within industrial electrical systems. Engineered by Mersen, a trusted leader in power distribution and protection, this 3-pole module is specifically built to integrate seamlessly with 45mm wide IEC contactors, offering a compact and space-saving design ideal for modern control panels and power distribution applications. Its SKU, USFMBB5, signifies a commitment to quality and performance in demanding environments. This UltraSafe Fuse Module goes beyond basic fuse holding by incorporating advanced features that enhance safety and operational efficiency. The unique design facilitates easy fuse extraction with its user-friendly handles, while an open fuse visual indication option provides immediate confirmation of fuse status, minimizing downtime and potential hazards. For added safety during maintenance, the module supports padlock capabilities, ensuring that the circuit remains de-energized until intentionally re-energized. A standout feature of the USFMBB5 is its optional auxiliary contact. When wired in conjunction with an adjacent contactor, this auxiliary contact provides an intelligent safety interlock. If an attempt is made to open the fuse extractor handle while the circuit is energized, the auxiliary contact will trigger the contactor to immediately drop out the load, preventing dangerous arcing and protecting personnel. This proactive safety measure is a critical advantage in high-risk industrial settings. Installation is streamlined thanks to the integrated compact busbars for line-side terminations, reducing the need for complex wiring and saving valuable panel space. Furthermore, the module offers tool-free removal from DIN-rail mounting, simplifying assembly, maintenance, and future modifications. The USFMBB5 also adheres to stringent safety standards, offering IP20 protection against accidental contact with live parts. Key benefits and features of the Mersen USFMBB5 UltraSafe Fuse Module include: * **Compact and Efficient Design:** Perfectly suited for 45mm IEC contactors, optimizing panel space. * **Enhanced Safety Features:** Includes padlock capability, easy fuse extraction handles, and visual open fuse indication. * **Intelligent Auxiliary Contact Option:** Provides an interlock with adjacent contactors for immediate load dropout upon attempted fuse handle operation. * **Streamlined Installation:** Features compact busbars for line-side terminations and tool-free DIN-rail removal. * **Robust Construction:** Built to Mersen's high standards for reliability in industrial applications. This fuse module is an excellent choice for applications such as UL 508 panels, solar string combiner boxes, control panels, and power distribution panels where reliable protection and operational safety are paramount. Its compatibility with IEC standards and Mersen's reputation for quality assurance make the USFMBB5 a dependable component for any industrial electrical infrastructure.
  • Mersen USFMBB5 UltraSafe Fuse Module for 45mm IEC contactors
  • 600V, 3-pole configuration for robust circuit protection
  • Optional auxiliary contact for enhanced safety interlocks
  • Padlock capability for secure de-energization
  • Compact busbars and tool-free DIN-rail mounting for easy installation

Specifications

AC Voltage Rating
600 V
Amperage Rating
30 A
Amperage Rating
63 A
Application
Primarily for motor circuits to replace circuit breakers for higher SCCR ratings Other circuits up to 600 volts for control circuits, transformers, etc. Non-load disconnect Padlock compliance RECOMMENDED FUSE USAGE: USM use with: ATQ, ATM(1), A6Y-2B, A25Z-2, TRM, OTM, A13X-2, A60Q-2, DCT(1) USCC use with: ATDR, ATMR(1), ATQR (1) Recommended for DC applications
Application
Primarily for replacement of circuit breakers in motor circuits to achieve higher SCCR Circuits up to 600V for motors, control, transformers, etc… Applications requiring lock-out / tag-out procedures
Brand Name
Ferraz Shawmut
Class
Accessory
DC Voltage Rating
500 V
Short Circuit Rating
200 kA
Size
8.19 x 0.51 x 0.8 in
Special Features
Dedicated 3-pole fuse module Finger-safe Compact footprint with 45mm width Auxiliary contact option (1NO/1NC) Ability to padlock in OPEN position with 1/4" shank diameter DIN-rail mount with tool free removal Quick, easy fuse change Optional indicator lights
Special Features
Dedicated 3-pole fuse module Compact footprint - 45mm width IP20 Finger-safe Auxiliary contact option (1NO/1NC) Ability to padlock in Open position with 1/4" diameter shank DIN-rail mount with tool free removal Optional visual blown fuse indication
Standard
UL Listed to standard 4248-4, File E52283 CSA Certified C22.2, Class 6225, File 32169 UL Listed to standard 508, File E336456 UL Recognized Component to standard 4248-1, File E319605 UL Recognized Component to standard 4248-14, File E52283 CSA Certified C22.2, Class 6225, File 32169 IEC Compliant to 60269-2-1, 60947-3
Standard
USFMCC (Class CC Fuses) UL Listed, guide IZLT, File E52283 CSA Certified C22.2, class 6225 01, File 32169 USFM10 (Midget 10x38mm Fuses) UL Recognized Component, guide IZLT2, File E52283 CSA Certified C22.2, Class 6225 01, File 32169 IEC Certified 60269-1, 60947-3 (690VAC, 32A, 120kA)
Type
Busbar
Type
UltraSafe
Voltage Rating
600 VAC
Package Dimensions (L x W x H)
8.7 IN x 1.26 IN x 0.52 IN
Package Dimensions (L x W x H)
22.098 cm x 3.2004 cm x 13.208 mm
Package Weight (Imperial)
1.250 L
Package Weight (Metric)
0.567 kg
USFM - BB 600V 3-Pole C1 phases

USFMBBC1

USFM - BB 600V 3-Pole C1 phases

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.