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ISO-PUCK Medical Grade Isolation Transformers

At Bridgeport Magnetics Group, we help medical device manufacturers, biomedical engineers, and healthcare facilities achieve patient safety and ultra-low leakage current compliance through reliable isolated power. Our ISO-PUCK toroidal medical grade isolation transformers combine superior leakage current performance, compact design, and full customizability - enabling you to meet the demanding requirements of IEC 60601-1 and UL 60601-1 standards.

01 · Overview

Medical Grade Isolation, Built to Your Spec

The ISO-PUCK is a compact toroidal medical grade isolation transformer engineered for patient-connected medical equipment and healthcare environments where low leakage current and galvanic isolation are critical. Its precision toroidal design combined with electrostatic shielding delivers ultra-low leakage current while maintaining full electrical isolation between the primary power source and the connected device.

Fully customizable in leads, terminations, voltages, and mounting configurations, every ISO-PUCK is built in Shelton, Connecticut and certified to UL 60601-1 and IEC 60601-1 standards. With typical lead times of just 1–2 weeks, Bridgeport Magnetics provides medical OEMs, dental equipment manufacturers, and hospital facilities with fast access to compliant, high-performance isolation transformers tailored to their exact requirements.

02 · Patient Safety

Why Medical Equipment Needs Isolation

Even small leakage currents can create serious safety risks in medical environments where equipment contacts patients directly. A medical grade isolation transformer provides galvanic isolation between facility power and the device, preventing unintended current paths that could reach a patient.

Standards such as IEC 60601-1 and UL 60601-1 set strict leakage current limits for this reason. The ISO-PUCK achieves these requirements through toroidal construction and electrostatic shielding, delivering low-leakage, isolated power for patient monitors, surgical equipment, dental systems, and other medical devices.

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03 · Specifications

ISO-PUCK Model Specifications

Standard models below – every unit can be customized to your requirements.

MODELAmpsVAFrequencyThermistorDNHousing Material/FinishDiameter (in)Depth (in)Approx. Weight (lbs)PLUGL [Ft]

Voltage [V]

RECL [Ft][V]
IP200/500.920050NADN24660PC (White)4 7/82 1/86.2Any2230Any2230
IP350/501.535050NADN19401PC (White)5 3/42 3/48.5Any2230Any2230
IP650/502.865050NANAPC (White)6 5/82 3/417.4Any2230Any2230
IP1000/504.3100050SL22 10007NAPC (White)7 7/83 1/820Any2230Any2230
IP1200/505.2120050SL22 10007NAPC (White)7 7/83 1/826Any2230Any2230
IP1800/507.8180050SL22 7R010NAPC (White)7 7/83 1/833Any2230Any2230
IP2500/5010.9250050SL22 7R010DN25371SteelWhite94 1/438Any2230Any2230
IP200/601.720060NADN21371PC (White)4 7/82 1/85.1Any2120Any2120
IP300/602.530060NADN19730PC (White)5 3/42 3/48.9Any2120Any2120
IP400/603.340060NADN25410PC (White)5 3/42 3/413Any2120Any2120
IP600/605.060060NADN25280PC (White)6 5/82 3/414.1Any2120Any2120
IP800/506.780050NADN19491PC (White)6 5/82 3/419.2Any2120Any2120
IP1000/608.3100060SL22 7R010NAPC (White)7 7/83 1/819.7Any2120Any2120
IP1200/6010.0120060SL22 7R010CE1200PC (White)7 7/83 1/820Any2120Any2120
IP1500/6012.5150060MS32 10015DN19361PC (White)8 1/23 3/428Any2120Any2120
IP1800/6015.0180060MS35 2R035DN18781PC (White)8 1/23 3/430Any2120Any2120
IP2200/6018.3220060MS35 2R035NAPC (White)8 1/23 3/433Any2120Any2120
IP2400/6020.0240060NADN26710SteelWhite94 1/435Any2120Any2120
IP3000/6025.0300060MS35 3R030NASteelWhite94 1/438Any2120Any2120
04 · Certifications

Certified to the Highest Standards for Medical Applications

UL 60601-1 (Medical)

ISO-PUCK isolation transformers are designed and built to UL 60601-1 – the medical electrical equipment safety standard, and the certification that matters most for patient-care equipment.

IEC 60601-1 / CSA C22.2 No. 601

Designs meet the international and Canadian equivalents (IEC 60601-1, CSA C22.2 No. 601) for equipment sold worldwide.

Ultra Low Leakage Current

Engineered to hold leakage current within medical limits – ≤100 µA on patient-care designs – and verified by in-house testing.

Built to Your Compliance Path

Tell us the agency marks and standards your device must carry, and we design and document for certification from the start.

05 · APPLICATIONS Served

Through our custom toroidal transformer designs, we're delivering the ultra-low leakage current, superior patient safety, and uncompromising reliability that tomorrow's critical medical systems demand.

Patient Monitoring Systems

ECG, bedside monitors, pulse oximeters, infusion pump

Hospital Beds

Electric hospital beds, stretchers, patient lifts

Dental Equipment

Dental chairs, delivery systems, sterilization units

Operating Rooms

Surgical lights, anesthesia machines, procedure tables

Diagnostic Equipment

Analyzers, centrifuges, incubators, diagnostic instruments

06 · Custom-Built

Fully Customizable - Any Leads, Any Connections

The ISO-PUCK’s greatest strength is its full customizability. We engineer each unit to your exact requirements – including leads, terminations, connectors, voltages, multiple secondaries, mounting options, and enclosure style. Simply provide your specifications, and we design the transformer around them. Because every ISO-PUCK is wound and assembled in the USA, customization does not come with long lead times – most custom units ship within 1–2 weeks.

USA-Made, 1–2 Week Lead

Wound and assembled in Shelton, CT – custom units in 1–2 weeks, no import delays.

Custom Mounting & Enclosure

Chassis, PCB, bracket, or encapsulated — packaged to drop into your design.

Custom Voltages & Ratings

Specific primary/secondary voltages, multiple secondaries, and VA ratings to spec.

Any Leads & Terminations

Flying leads, terminal blocks, connectors – built to match your equipment exactly.

Built for Patient Safety

Custom medical grade isolation transfromer, made in the USA.

UL 60601-1 toroidal isolation transformers, fully customized to your equipment and certified for patient-care environments – engineered and built in Shelton, Connecticut.

Talk to an engineer →
07 · FAQ

Frequently Asked Questions

What leakage current does the ISO-PUCK medical grade isolation transformer achieve?

The ISO-PUCK series is designed for ultra-low leakage current, typically well below 100 µA. Many 60 Hz models target 50 µA or less, helping medical devices meet IEC 60601-1 and UL 60601-1 patient leakage requirements under both normal and single-fault conditions.

Yes. The ISO-PUCK is certified to UL 60601-1 and IEC 60601-1 (as well as CSA C22.2 No. 601). It is also INTERTEK (ETL) certified and built to support regulatory compliance for medical electrical

Yes. The ISO-PUCK’s low leakage current performance makes it suitable for supporting Type BF and certain Type CF applications when properly integrated into the overall medical device design. Always consult your regulatory and engineering team for final classification.

VA rating depends on the total power draw of the connected equipment. Smaller devices such as patient monitors or dental delivery systems often use 200–600 VA models, while larger setups or multiple devices may require 1000–3000 VA. Our team can help you select the correct size based on your specific load and application.

Is the ISO-PUCK suitable for operating rooms or wet locations?

Yes. The ISO-PUCK is commonly used in operating rooms, procedure rooms, and other patient care areas. In certain wet locations, a properly rated medical grade isolation transformer can be used as an alternative to GFCI protection while maintaining continuous power delivery. ISO-PUCK is a medical grade isolation transformer.

The ISO-PUCK is fully customizable. You can specify input/output voltages, lead lengths and types, terminations, connectors, mounting options, and enclosure configurations. This makes it ideal for OEMs and medical device manufacturers who need a tailored solution rather than an off-the-shelf unit.

Standard configurations are typically available with short lead times. Custom ISO-PUCK medical grade isolation transformers are usually built and shipped within 1–2 weeks from our facility in Shelton, Connecticut.

All ISO-PUCK medical grade isolation transformers are engineered and built in Shelton, Connecticut, USA. This allows for fast customization, consistent quality, and full traceability. ISO-PUCK is the only puck-sytle medical grade isolation transformer.

Yes. We can supply relevant certification documents, test reports, and technical specifications to support your IEC 60601-1 or UL 60601-1 compliance efforts. Contact our engineering team for the documentation you need. ISO-PUCK has all medical grade isolation transformer certifications.

What makes the ISO-PUCK different from other medical grade isolation transformers?

The ISO-PUCK is a compact toroidal medical grade isolation transformer designed for easy integration into medical equipment and patient care areas. It features electrostatic shielding for ultra-low leakage current, a small footprint, and full customizability of leads, voltages, and mounting – making it ideal for both OEMs and healthcare facilities. For a complete overview of medical isolation transformers — how they work, the types available, and how to choose one — see our Medical Isolation Transformers guide.

Yes. The ISO-PUCK is fully customizable. You can specify input/output voltages, lead lengths and types, connectors, mounting options, and enclosure style. This makes it a popular choice for medical device manufacturers who need a compact, low-leakage medical grade isolation transformer tailored to their equipment.

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