Dry-type transformers for occupied buildings, vaults, and mechanical rooms - no mineral oil required. Single- and three-phase units up to 5 MVA and 15 KV, ready to ship.
Need a fast quote? Send KVA, primary voltage, secondary voltage, phase, indoor or outdoor, enclosure type, quantity, ship-to location, and required delivery date.
Our dry-type transformer inventory is built for buyers running commercial, industrial, healthcare, and data center projects where liquid-filled transformers are not allowed, not practical, or not preferred. We stock units across the configurations contractors and EPCs specify most often, with both single-phase and three-phase options ready to quote.
We hold inventory on the configurations that turn fastest in the market: low-voltage three-phase units for commercial and industrial distribution, smaller single-phase units for lighting and control applications, and select medium-voltage three-phase units for hospital, data center, and industrial primary distribution.
Less common configurations move through our supplier network, typically faster than going direct to factory.
Browse our single-phase transformers and three-phase transformers categories, or send your specs and our team will match a unit from inventory.
Single-phase dry-type transformers serve smaller commercial loads, lighting circuits, control panels, mechanical equipment, and any application where three-phase service is not required.
We stock single-phase units across the most commonly specified primary and secondary voltages, including 240V or 480V primary stepping down to 120/240V secondary for receptacle and lighting loads, plus isolation transformers used in healthcare, laboratory, and sensitive equipment applications.
If your spec sits outside the standard range, we can typically source it faster than going direct to factory.
Three-phase dry-type transformers cover the majority of commercial and industrial dry-type applications: power distribution inside buildings, mechanical room service, data center distribution, healthcare facility loads, and process equipment
We carry three-phase units across the standard low-voltage and medium-voltage primary classes. Send your KVA, voltage, and enclosure requirements and we will quote from stock or source on your timeline..
Most dry-type transformer applications break down by input (primary) voltage. Use the table below to navigate by what is feeding the unit:
Output (secondary) voltage typically steps down to 120/240V single-phase, 208Y/120V three-phase, or 480Y/277V three-phase, depending on the load. Step-up applications are also common. Tell us your input and required output and we will match the configuration.
Need a dry-type transformer that matches your project specs? Send your KVA, voltage, phase, enclosure type, and delivery timeline, and we will confirm what we can supply from stock or source quickly.
Dry-type transformer quotes move faster when the spec is complete. Most quote delays come from missing information on phase, voltage, enclosure, or temperature class. Send what you have and our team will fill the gaps. The more of the following you can confirm up front, the faster we can match a unit:
Three-phase covers the majority of distribution applications because most commercial and industrial loads are three-phase: HVAC equipment, motors, elevators, and large lighting systems. Single-phase is used for smaller loads, isolation requirements, and applications where three-phase service is not available or not required.
We source dry-type transformers across the full capacity and voltage spectrum used in commercial, industrial, and medium-voltage applications.
Medium-voltage dry-type transformers are typically specified for applications where the unit needs to step down from utility-supplied 5 KV or 15 KV service inside a building or vault, where mineral oil cannot be used.
Medium-voltage dry-type units cost more than equivalent liquid-filled designs, but they often pay back through lower fire suppression, containment, and ventilation costs on hospital, university, and data center installations.
Most dry-type transformer applications are indoor. Outdoor dry-type units are specified when liquid-filled transformers are not desired but the installation is exterior, such as rooftop equipment, equipment yards near occupied buildings, or sites with strict environmental restrictions on oil-containing equipment.
Indoor installations need to account for ventilation, ambient temperature, and sound, since dry-type transformers reject heat into the surrounding space and generate audible hum during operation.
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Dry-type transformers we supply are built to distribution class standards under ANSI/IEEE C57.12.01 and related test code C57.12.91. This covers:
If your project specifies power class dry-type or a non-standard configuration, send the spec and we will source accordingly.
Dry-type transformers ship in standard configurations, with options available for specific application requirements:
Send your accessory list and we will match the configuration before quoting.
Have a spec sheet, one-line diagram, or accessory list? Send it over and our team will help match the right dry-type transformer configuration before quoting.
We carry dry-type transformers across the most commonly specified configurations, with new and reconditioned units in stock and ready to ship for the most common ratings. Larger or non-standard configurations can typically be sourced faster than factory lead times.
Our ready-to-ship inventory covers the configurations contractors and EPCs order most often:
Browse current single-phase availability at our single-phase transformersp page, or three-phase availability at our three-phase transformersp page. If you do not see your configuration listed, send your specs and we will check stock or source from our supplier network.
Dry-type transformers are used where liquid-filled equipment is not allowed, practical, or preferred. We supply dry-type units for commercial, industrial, healthcare, renewable, and critical-infrastructure applications.
Office towers, mixed-use developments, retail centers, and high-rise residential projects use dry-type transformers for indoor power distribution, floor-by-floor panel service, lighting loads, and low-sound applications near occupied spaces.
Hospitals, medical campuses, and universities use dry-type transformers where fire safety, noise control, uptime, and indoor distribution requirements are critical. We support planned procurement, expansions, retrofits, and emergency replacement needs.
Manufacturing plants, warehouses, logistics centers, and processing facilities use dry-type transformers for plant distribution, process equipment, motors, drives, lighting, controls, isolation, and step-up applications.
Solar farms, wind sites, microgrids, utility and co-op applications, and oil and gas field installations use dry-type transformers for inverter step-up, auxiliary service, isolation, grid-tie, indoor distribution, rooftop equipment, and environmentally sensitive applications.
Data centers and mission-critical facilities use dry-type transformers for indoor distribution, PDU feeders, UPS-supported loads, harmonic-heavy equipment, and high-load applications where fast sourcing and reliable operation matter.
We help buyers spec the right unit every day. Send what you have and we will fill in the gaps.
KVA rating should reflect connected load, expected diversity, and any growth or motor inrush you need to plan for. Send:
Dry-type transformers are particularly sensitive to ambient temperature and ventilation, so the rating that fits a well-ventilated electrical room may be insufficient for a hot, enclosed mechanical space. We will recommend a rating that fits your load profile and installation environment without overbuilding.
Primary voltage is set by the building or utility distribution feeding the transformer. Secondary voltage is set by the load.
If your specifying engineer has provided a transformer spec or one-line diagram, send it as-is. We will confirm the configuration before quoting.
Dry-type transformers have installation requirements that differ from liquid-filled units, especially around ventilation, sound, and clearances:
If your installation has site-specific constraints, mention them on the quote request. Problems with ventilation, sound, or access are much cheaper to solve before the unit ships.
H2LV supplies dry-type transformers across the United States. Whether you are placing a planned procurement order for a multi-site rollout or chasing down an emergency replacement after a failure, we move fast.
We ship from regional inventory points and arrange freight around your project timeline. Dry-type transformers are typically easier to move than liquid-filled units, which can help reduce freight complexity and delivery cost.
For planned orders, we coordinate delivery with your construction schedule. For emergency replacements, we can arrange expedited freight to most locations in the lower 48 and manage larger medium-voltage logistics when needed.
Our dry-type transformer buyers include:
We tailor lead time, documentation, and shipping to whichever bucket you fall into.
H2LV is built around a simple idea. When you need a dry-type transformer, you should be able to talk to a team that knows the equipment, has stock on the ground, and gives you straight answers on price and lead time.
We carry deep inventory across new and reconditioned units. We move fast on emergency orders. We do not push you toward a unit that misses your spec. We do not pad lead times to make our quote look better. And we back every transformer we ship with technical support from people who have spent careers around this equipment.
If your last vendor sent back a quote that read like a stall, send us your specs and see the difference.
Send your dry-type transformer requirements and we will respond with availability, pricing, documentation, and a real lead time.
If this is an emergency replacement, mention that in the request so we can prioritize availability and freight options.
