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History
In the late nineteenth century, Henry Cutter of Philadelphia's Cutter's Electrical Manufacturing Company built the first "inverse time element" circuit breaker. In 1917, the company, now known as I-T-E Circuit Breaker Company, developed the first shock-hardened circuit breaker. By the 1960s, I-T-E Imperial Corporation was known for the quality and cost-effectiveness of their innovative, high-performance military and commercial maritime products.
For a century, the company's reputation was made at sea - aboard U.S. Navy combatant ships. There, electrical equipment must be unquestionably reliable and perform under the harshest conditions. Today virtually every conventional and nuclear-powered vessel in the U.S. Navy active fleet is equipped with SPD Electrical Systems products.
Now, as a part of L-3 Communications Power & Control Systems Group, the company brings that tradition of excellence to today's demanding commercial industrial and transportation markets. In its 165,000-square foot facility in Philadelphia, Pennsylvania, L-3 SPD Electrical Systems houses advanced computer design systems, computer-controlled punch presses and machining centers and all the latest equipment for sheet metal fabrication, welding and plating.
As part of Power & Control Systems Group, L-3 SPD Electrical Systems is able to utilize the complete resources of SPD and its subsidiaries:
- SPD Switchgear, a provider of electrical power control and distribution products for commercial, industrial and military applications
- Power Paragon, specializing in power-conversion technology and advanced power systems for mission-critical applications
- Henschel, supplier of field-proven, technologically advanced electronic ship control and internal communications systems
- PacOrd, offering multifaceted DoD services, installation and integration of shipboard combat systems worldwide
In 1998, Power & Control Systems Group was acquired by L-3 Communications, a leading merchant supplier to aerospace, military and commercial primes. Based in New York, L-3 Communications serves the Department of Defense, select U.S. government intelligence agencies, aerospace and defense prime contractors and commercial telecommunication and cellular customers.
 
Power & Control Systems Group brochure.
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Profile
With beginnings that date back over 100 years, L-3 Communications SPD Electrical Systems is the world's leading supplier of shock-hardened circuit breakers and switchgear for harsh environment applications. A business unit of parent companies L-3 Communications and Power & Control Systems Group, L-3 SPD Electrical Systems provides innovative power protection equipment to United States Navy surface ships and submarines. All L-3 SPD Electrical Systems equipment is manufactured and assembled in the United States. L-3 SPD Electrical Systems has earned the prestigious ISO 9001 certification for the manufacture, testing and factory servicing of air and molded-case circuit breakers and accessories for use in commercial, military and nuclear applications. This is an assurance that L-3 SPD Electrical Systems quality-management processes are among the very best in the world, and that the company's products and services represent unchallenged superiority and unquestioned value.
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Services & Capabilities
Circuit Breakers (Products & Services Page)& Switchgear (Products & Services Page)
Actron circuit breakers are based on leading commercial circuit breaker technologies. Actron molded-case circuit breakers offer advanced COTS (commercial off the shelf) technology. Actron circuit breaker features allow increased automation and reduced manning through local and remote state monitoring of cicuit breaker paramaters. Among the many new features are RMS sensing, rating plugs, adjustable short-time delay trip, adjustable instantaneous Settings up to 50x the frame rating, ground fault detection, real-time state monitoring, bidirectional communications and control functions and more.
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