Mersen USBB1PH25K4 4P 1PH 600VAC/1000VDC BUSBAR
Alternate Item Number: USBB1PH25K4
UPC: 782001447496
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Overview
- 4-Pole, 1-Phase Busbar System
- 25mm² Copper Cross Section
- 17.8mm Pitch
- 600 VAC / 1000 VDC Voltage Rating
- Fuse Holder Compatible (USCC/USM)
Specifications
AC Voltage Rating | 600 V |
Amperage Rating | 200 A |
Application | • UL 508 panels • Solar string combiner boxes • Control panels • Power distribution panels |
Application | Applications where Mersen USM/USCC fuseholders are in use UL 508 panels Solar string combiner boxes Control panels Power distribution panels |
Brand Name | Ferraz Shawmut |
Class | Accessory |
Connection | Comb Bus Bar |
DC Voltage Rating | 1000 V |
Phase | 1 |
Poles | 4P 1PH |
Series | USBB |
Size | 3.11 x 0.69 x 0.65 in |
Size | 78.994 x 17.526 x 16.51 mm |
Size | 25 mm |
Special Features | • Decrease installation time compared to wire solutions • Save panel space with compact design and footprint • Reduce shock hazards with touchsafe cover (included) • Environmentally conscious, RoHS compliant and lead free • Cuttable design offers flexibility |
Special Features | • Decrease installation time compared to wire solutions • Save panel space with compact design and footprint • Reduce shock hazards with touch-safe cover (included) • Environmentally conscious, RoHS compliant and lead free • Cuttable design offers flexibility |
Standard | UL Listed to standard UL508, File E348854 IEC Compliant to standard 60947-2 |
Standard | • UL Listed to Standard 508, File E348854 • IEC Compliant |
Type | UltraSafe Accessories |
Type | Busbar |
Voltage Rating | 600 VAC |
Package Dimensions (L x W x H) | 3.11 in x 0.69 in x 0.65 in |
Package Dimensions (L x W x H) | 78.994 mm x 17.526 mm x 16.51 mm |
Package Weight (Imperial) | 0.051 lb |
Package Weight (Metric) | 0.023 kg |

P092496
The Mersen P092496 is a high-quality industrial component designed for demanding applications. Engineered for reliability and durability, this product meets stringent performance standards, ensuring optimal operation in harsh environments. Trusted by professionals worldwide, Mersen's expertise in industrial solutions guarantees exceptional performance and longevity. Whether for manufacturing, energy, or infrastructure, the P092496 delivers consistent results, making it an ideal choice for critical applications.Frequently Asked Questions
What is the maximum voltage rating for the USBB bus bar system?
The USBB bus bar system has a maximum rating of 600VAC and 1000VDC.
What is the amperage rating for the end feed and center feed bus bars?
The end feed bus bar is rated for 100A, while the center feed bus bar is rated for 200A.
What is the SCCR for the USBB bus bar system?
The SCCR is 10kA, and 100kA when used with a 200A J Fuse.
What types of fuse holders are compatible with the USBB system?
The USBB system is intended for use with UltraSafe Class CC (USCC) and Midget (USM) fuse holders.
What are the benefits of using the USBB bus bar system?
It decreases installation time, saves panel space, and offers touch-safe, shock-resistant solutions.
What phase configurations are available for the USBB bus bar system?
The USBB bus bar system is available in 1-, 2-, and 3-phase designs.
What is the cross-section and pitch for the USBB1PH25K4 bus bar?
The USBB1PH25K4 bus bar has a cross-section of 25mm2 and a pitch of 17.8mm.
What is the wire range and torque for the USBBC1 feeder terminal?
The USBBC1 feeder terminal accepts a wire range of 10 - 1/0 AWG and requires a torque of 50 lb-in.
What is the maximum amperage for the USBB Feeder Terminal?
The USBB Feeder Terminal has a maximum amperage rating of 115A.
Is the USBB bus bar system RoHS compliant?
Yes, the USBB bus bar system is environmentally conscious, RoHS compliant, and lead-free.
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.






