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Dual trip protection on a PowerBack temporary power restoration autotransformer with circuit breaker and 105 C winding temperature trip
Temporary Power Restoration

Dual Trip Protection for Temporary Power Restoration Devices

A temporary restoration autotransformer left on a live service needs two trip paths: overcurrent and winding temperature. A breaker alone does not see slow overheating from load, ambient heat, or solar export. That is the minimum protection for a unit that may stay connected for

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September 7, 2026
Service Savor, Temporary Power Restoration Autotransformer, Servisavor
Temporary Power Restoration

Dry Pak and Autocart: How Utilities Cut O&M Costs

Some utilities call portable temporary power restoration units a Dry Pak. Others call them an Autocart. These field names refer to the same practical category of equipment: a portable autotransformer that restores full 120/240V service at the customer meter while permanent repairs are completed. This

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August 13, 2026
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Toroidal transformers & magnetics — made in Shelton, CT since 1982
Powerback, Power restoration autotransformer, service saver, servisavor, add-a-phase
PowerBack™ & Trident™

Portable auto-transformers that instantly restore lost 120V or neutral power at the meter.
PowerTower™

3-phase toroidal power towers for industrial, BESS, and datacenter voltage management.
MarinePuck, Marine Isolation Transformer, Boat Isolation Transformer
MarinePuck™

ABYC-compliant, UL Listed Marine shore-power isolation in a corrosion-resistant puck design.
IsoPuck medical isolation transformer installed in hospital equipment Bridgeport Magnetics IsoPuck toroidal medical isolation transformer Toroid IsoBox medical isolation transformer Amgis medical isolation transformer toroidal design Hammond medical isolation transformer hospital grade Hospital grade medical isolation transformer for patient safety IEC 60601 medical isolation transformer for medical equipment Toroidal medical isolation transformer for hospital and dental use Low leakage current medical isolation transformer IEC 60601 Medical isolation transformer for dental chair and medical devices Compact toroidal medical isolation transformer 600VA to 3000VA IsoPuck IP600 medical isolation transformer IsoPuck IP900 medical isolation transformer IsoPuck IP1500 medical isolation transformer Toroid Corporation IsoBox isolation transformer Amgis Toroid medical isolation transformer Hammond Power Solutions medical grade isolation transformer Hospital isolation transformer for medical electrical equipment Medical grade isolation transformer with electrostatic shielding Low leakage IEC 60601 compliant medical isolation transformer
IsoPuck™

Medical-grade isolation with ultra-low leakage current — IEC 60601-1 / UL 60601-1 compliant.
IsoPuck medical isolation transformer installed in hospital equipment Bridgeport Magnetics IsoPuck toroidal medical isolation transformer Toroid IsoBox medical isolation transformer Amgis medical isolation transformer toroidal design Hammond medical isolation transformer hospital grade Hospital grade medical isolation transformer for patient safety IEC 60601 medical isolation transformer for medical equipment Toroidal medical isolation transformer for hospital and dental use Low leakage current medical isolation transformer IEC 60601 Medical isolation transformer for dental chair and medical devices Compact toroidal medical isolation transformer 600VA to 3000VA IsoPuck IP600 medical isolation transformer IsoPuck IP900 medical isolation transformer IsoPuck IP1500 medical isolation transformer Toroid Corporation IsoBox isolation transformer Amgis Toroid medical isolation transformer Hammond Power Solutions medical grade isolation transformer Hospital isolation transformer for medical electrical equipment Medical grade isolation transformer with electrostatic shielding Low leakage IEC 60601 compliant medical isolation transformer, Custom toroidal transformer by Bridgeport Magnetics – high efficiency, low noise, and compact design for medical, industrial, datacenter, and audio applications, Custom toroidal transformer OEM using Laminax cuffed foil shielding laminates for automated winding production
Custom Toroidal Transformers

Custom-designed, 30 VA – 70 kVA. UL, CSA, CE, IEC 60601-1 certified.
Bridgeport Magnetics Group air-core foil inductor — high-purity copper foil wound on a Lexan tube with upright foil leads, precision crossover inductor made in Shelton, CT
Inductors & Chokes

Custom inductors, filter chokes, and power inductors — amorphous core, air-core foil, de-buzzing.
Cores & Core Components

GOSS toroidal, O-, C-, and E-cores — wound, heat treated, and epoxy coated.
Laminax cuffed foil shielding, toroidal transformer shielding, Cuffed Foil Shielding | Laminax™ Electrostatic Shielding Laminates for Transformers
Laminax™ Shielding Tape

Cuffed foil laminates for superior electrostatic and grounding shields in transformers.
copper coils
Flat Magnet & Specialty Wire

Precision flat magnet and specialty wire built for thermal and mechanical reliability.
Made in USA  ·  Intertek (ETL) Certified  ·  UL Recognized
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