Transit & Locomotive Fuses
DC fuses for rail and metro systems.
About DENCO Fuses
A family-owned manufacturer of electrical and industrial fuses, incorporated in Florida in 1988 and still building circuit protection to customer specification.
Where we came from
The company was incorporated in Florida in 1988 as DenMar Transit Engineering, Inc., designing and manufacturing DC fuses for metro transit rail cars and substations. As the range widened across AC and DC circuit protection it traded as DenMar Fuses, Inc., and in 2007 became DENCO Fuses, Inc.
That transit heritage still shapes the business. DC fuses for rail — third rail feeders, overhead catenary, rectifier and substation duty, collector shoe and propulsion protection — remain among the most demanding things we build.
Manufacturing and testing
A second manufacturing facility, built from the ground up, has been in full operation since January 2019. Both plants use German manufacturing technology.
Our in-house laboratory performs:
- Electrical resistance measurement
- Temperature rise at rated current, at body and terminal
- Power dissipation (watts loss)
- Time/current curve verification
- Melting and non-melting current
- Sand compactness and insulation testing
- Dimensional and visual verification
Third-party testing is carried out at IPH Berlin at customer request.
The engineering team behind that work has over 100 years of combined experience, solely in manufacturing electrical fuses.
Quality
Manufacturing is carried out in a facility certified to ISO 9001:2015.
How we work
Most products are built to order, and we hold stock on request for repeat customers. We do not require exclusivity agreements from distributors. Where a fuse is no longer manufactured by anyone, we will quote building it to the original specification.
Company
History, manufacturing and quality
Our evolution over the years
- 1988
DenMar Transit Engineering
In our early years, we collaborated with Metro Transit systems, designing and manufacturing DC fuses for railcars and substations.
- 1990s
DenMar Fuses, Inc.
As we expanded, we rebranded as DenMar Fuses, Inc., broadening our product line to include both AC and DC electrical fuses for various circuit protection needs.
- 2007
DENCO Fuses, Inc.
In 2007, we officially became DENCO Fuses, Inc., a trusted name in manufacturing, supplying, and distributing industrial electrical fuses, specializing in medium to high voltage fuse ranges.
- 2019
A second plant
Built from the ground up and in full operation since January 2019.
Comprehensive Fuse Solutions for Every Industry
Our electrical and industrial fuse product line covers a wide range of applications, including:
Renewable Energy Fuses
PV solar fuses and EV electric vehicle fuses.
Transformer & Capacitor Protection
PT fuses and capacitor fuses.
Semiconductor & Rectifier Fuses
British Standard BS88, specialty, and custom-made fuses.
Custom & Discontinued Fuses
We provide OEM fuses, specialty fuses, and one-off custom fuses on request.
Comprehensive In-House Testing Capabilities
Our factory lab is equipped to perform a wide range of tests, including:
- 01Electrical resistance measurements (ohms)
- 02Temperature-rise at rated current measurements (Body & Terminal)
- 03Power dissipation measurements (watts loss)
- 04I/T Curve verification (Time/Current Rise)
- 05Melting & Non-Melting Current
- 06Sand Compactness & Insulation Test
- 07Dimension and visual verification
Faster Turnaround Times: Quality You Can Rely On
Our in-house testing capabilities not only guarantee the quality of our fuses but also contribute to industry-leading manufacturing lead times. While many fuse manufacturers require 90 days or more, DENCO Fuses averages just 30 days. These consistent on-site quality checks ensure that you receive characteristically high-caliber fuses, faster.
- Medium/High Voltage Dist. Fuses
- International Fuses
- Ultra-Rapid Semiconductor Fuses
- Special Purpose Fuses
- Contact Us
Excellence in Manufacturing Quality Fuses for over 30 years
Who We Are
A Legacy of Excellence in Electrical Fuses
DENCO Fuses, Inc. is a family-owned and operated manufacturer of high-quality, handcrafted electrical and industrial fuses. Our journey began in 1988 when we were incorporated in Florida as DenMar Transit Engineering, Inc.
Why Choose DENCO Fuses?
Quality & Affordability
High-performance electrical fuses at competitive prices.
Fast & Reliable Delivery
Stocked inventory and on-demand manufacturing for reduced lead times.
Customer-Centric Approach
Our loyalty program enhances customer satisfaction and shortens downtime.
Your Trusted Partner in Circuit Protection
At DENCO Fuses, we prioritize quality, reliability, and affordability. While most of our fuses are built to order, we also stock inventory to ensure faster delivery. We understand the urgency—because in this industry, you needed those fuses yesterday.
We may not be the biggest, but we strive to be the best. Your Specs. Our Fuses. Best Prices.
Contact us today to find the perfect fuse solution for your needs!
Our Factory & Testing Lab
Protecting Your Electrical Systems with DENCO Fuses: Quality, Speed, and Reliability
Expanding to Meet Your Needs
To better serve our growing clientele, DENCO Fuses has expanded its operations with a second state-of-the-art manufacturing facility. Fully operational since January 2019, this expansion, coupled with our existing plant, reinforces our commitment to providing exceptional products and service. Both facilities utilize cutting-edge technology, and our engineering team boasts over 100 years of combined experience in manufacturing high-quality electrical fuses for circuit protection.
Investing in Excellence: Technology, Service, and Customer Loyalty
DENCO Fuses has strategically invested in new technologies and initiatives to enhance every facet of your experience – from fuse selection and purchasing to ongoing customer support. Our investments include:
- Expert Management
- Our focused management team possesses extensive knowledge in the field of circuit protection, ensuring you receive expert guidance.
- Enhanced Customer Service
- We’ve strengthened our customer service operations to provide prompt and personalized support.
- Expanded Warehousing
- Larger warehousing space allows us to maintain ample stock of frequently requested fuses, ensuring rapid delivery.
- Customer Loyalty Programs
- We offer special pricing and service programs to reward our loyal customers.
Uncompromising Quality and Safety: Third-Party and In-House Testing
Because so much electrical power depends on our products, DENCO Fuses maintains rigorous quality and safety standards. We conduct third-party testing at IPH Berlin, one of the world’s leading and largest electrical testing facilities, upon client request. Furthermore, our in-house testing laboratory allows us to conduct comprehensive quality control checks during every phase of the manufacturing process.
Uninterrupted Supply: Our Customer Loyalty Program
Contact DENCO Fuses Today
If you’re seeking a reliable circuit protection solution for your electrical systems or require fuses for specific applications, contact DENCO Fuses today. Call us at 305.273.6226 . Our team is ready to answer your questions and help you select the right fuses for your needs.
Focus On Main Growing Markets
DENCO Fuses Products to serve market needs
Public Transportation
Protecting Public Transit Systems with DENCO Fuses
DENCO Fuses has been a trusted partner for public transportation systems since 1988, designing and manufacturing reliable DC fuses for a wide range of applications. Whether it’s heavy rail, light rail, metro transit systems, locomotives, trolley rail, trolley buses, substations, mining vehicles, or any other DC rail application, we have the expertise and experience to meet your circuit protection requirements. Our commitment to quality and innovation ensures the safety and reliability of your transit operations. For decades, we’ve provided solutions that keep public transportation moving forward.
Utility/Power Companies
Custom-Designed Fuses for Power Generation and Distribution
DENCO Fuses recognizes the unique needs of power companies. We understand that off-the-shelf solutions often aren’t sufficient for building and maintaining power plants and grids. Therefore, we offer custom design and manufacturing of one-off fuses tailored to your specific applications. In addition to these custom solutions, we also provide a full range of standard fuses for circuit protection in power generation facilities. This comprehensive approach ensures that you have the right fuse for every application.
OEM/Specialty Custom Design
Tailored Fuse Solutions for OEMs and Specialized Applications
DENCO Fuses adheres to all internationally recognized standards and specifications when developing custom fuses for our OEM clients. Our primary focus is protecting your valuable applications and systems from short circuits and voltage spikes using our advanced current-limiting fuses. Whether you need primary fuses, backup fuses, or full-range fuses, our expert engineers can design a fuse product that meets your exact specifications and ensures optimal performance. We work closely with you to understand your unique requirements and deliver a solution that fits your needs perfectly.
Electrical Contractors
Your Partner for Electrical Fuse and Circuit Protection Solutions
DENCO Fuses offers a comprehensive range of electrical fuses and circuit protection devices to meet the diverse needs of electrical contractors. From underground line distribution fuses to protection for commercial and residential buildings, we have the solutions you need for your job site. Let us help you keep your assets operating safely and reliably with our high-quality, current-limiting circuit protection products. We’re dedicated to providing the products and support you need to complete your projects successfully. Contact us today to discuss your specific requirements.
Customer Oriented Product
Product Uniqueness
The quality of fuses has declined in the United States and the global market since the few giant fuse manufacturers have had to reduce costs to remain competitive.
Here at DENCO Fuses, we continuously make our fuse products to be the very best of quality, best performance, and longevity in service than our competitors. Each and every one of our products are hand assembled with only the highest quality raw materials at substantially lower costs.
By forging and nurturing mutually beneficial relationships with our material suppliers, we are able to pass the savings down to our clients. In addition, DENCO Fuses has more of a customer oriented product.
Our clients’ needs change, often requiring unique resolutions. By designing our fuses with the specifications they provide to fit their specific needs, we demonstrate our edge over the competition.
We’ll manufacture the discontinued fuses or specialty fuses that our competitors won’t touch.
Each fuse has value added by being sealed in a transparent heated shrink-wrap, plastic bubble wrapped, and then each individual fuse box is also sealed. This process insures the fuses will have a long shelf life for retailers, wholesalers, distributors and end-users, as well as protect your fuse products during shipping.
We stock quantities of inventory upon request for fast deliveries therefore shorter down times to the end-user.
Miami, FL 33173
Main: +1 (305) 273.6226 Toll-Free: 1.800.305.FUSE (3873)
+1 (305) 273.4335