Transformer Sizes We Buy (kVA & MVA)

• 45 kVA45 kVA transformer buyers serving New York State.
• 75 kVA75 kVA transformer buyers for dry-type and padmount units across New York.
• 112.5 kVANeed 112.5 kVA transformer buyers?
• 150 kVASell your 150 kVA transformer to 150 kVA transformer buyers serving New York.
• 225 kVA225 kVA transformer buyers serving New York State.
• 300 kVASell your surplus unit to 300 kVA transformer buyers in New York.
• 500 kVASell to 500 kVA transformer buyers serving New York State.
• 750 kVAOur 750 kVA transformer buyers purchase surplus, used and failed units across New York, with coordinated pickup and written offers.
• 1000 kVASell to 1000 kVA transformer buyers serving New York State.
• 1500 kVA1500 kVA transformer buyers serving New York State.
• 2000 kVA2000 kVA transformer buyers serving New York State.
• 2500 kVASell to 2500 kVA transformer buyers serving New York State.
• 3000 kVA3000 kVA transformer buyers serving New York State.
• 3750 kVA3750 kVA transformer buyers serving New York State.
• 5000 kVA5000 kVA transformer buyers serving New York State.
• 10 MVASell to 10 MVA transformer buyers serving New York.
• 20 MVASell to 20 MVA transformer buyers serving New York State.
• Single-Phase 50 kVA50 kVA transformer buyers serving New York State.
• Single-Phase 167 kVASell to 167 kVA transformer buyers serving New York State.

Standard Transformer Sizes: Reading kVA and MVA

We use the nameplate rating to establish a transformer's capacity. kVA means kilovolt-amperes; MVA means megavolt-amperes. The conversion is straightforward: 1,000 kVA equals 1 MVA, so a 2,500 kVA transformer is a 2.5 MVA unit. These ratings describe apparent power, not physical dimensions or shipping weight.

Common transformer kVA sizes follow familiar rating series, but the available sizes depend on phase, construction and manufacturer. A single-phase pole-mount transformer and a three-phase dry-type transformer may carry the same kVA rating while having different voltages, connections and applications.

When you send photos, include the entire nameplate rather than just the large kVA number. We need the primary and secondary voltages, phase, frequency and condition to understand what you have. For larger power transformers, photograph every listed cooling-stage rating; one unit may have multiple capacities depending on its cooling arrangement.

A rating outside the lists below is still worth submitting. We review new surplus, used, decommissioned, failed and scrap units, including individual transformers and groups with mixed ratings.

Common Single-Phase Ratings and Typical Uses

Common single-phase distribution ratings include 15, 25, 37.5, 50, 75, 100, 167, 250, 333 and 500 kVA. You may see 166.7 or 333.3 kVA on some nameplates instead of the rounded ratings. Smaller units commonly serve residential loads, small commercial services, farm buildings and individual loads, depending on voltage and service requirements.

A single-phase 50 kVA transformer may be a pole-mount or padmount unit. That rating alone does not tell us its primary voltage, secondary configuration or fluid type. Clear photos of the enclosure, bushings and nameplate help us distinguish the equipment.

Larger single-phase units, including 167 kVA transformers, may serve heavier individual loads or form part of a three-transformer bank. Tell us how many units are available and whether their ratings and voltages match. For a bank, send each nameplate rather than reporting only the combined capacity.

Only offer equipment you own or are authorized to sell. A utility-owned transformer serving your property belongs to the utility, even if it sits on your land.

Three-Phase Dry-Type and Padmount Size Classes

Common three-phase dry-type ratings include 15, 30, 45, 75, 112.5, 150, 225 and 300 kVA, with larger units available at 500, 750, 1,000 kVA and above. These transformers often supply building distribution, lighting, receptacles and production equipment. A common arrangement steps 480 volts down to 208Y/120 volts, but we need the actual nameplate voltages.

Our 45 kVA transformer buying page covers a familiar building-distribution size. Units in the 75–300 kVA class often serve larger panels or groups of loads. Size alone does not establish suitability for a particular installation; loading, voltage, impedance and protection also matter.

Standard padmount transformer sizes commonly include 75, 150, 225, 300, 500, 750 and 1,000 kVA, followed by larger ratings discussed below. Available ratings vary by manufacturer and product line. Padmounts typically connect medium-voltage distribution to a lower-voltage service.

For a 500 kVA transformer, tell us whether it is dry-type or liquid-filled and include the connection diagram. For padmount units, also photograph accessible termination-compartment details without opening energized equipment.

Standard Transformer Sizes Above 1000 kVA

Common standard transformer sizes above 1000 kVA include 1,500, 2,000, 2,500, 3,000, 3,750 and 5,000 kVA. Larger power transformers are often described in MVA, including 10 MVA and 20 MVA units. These are familiar ratings, not a universal catalog; substation and project-specific transformers may have other capacities.

At the transition into larger equipment, a 1,000 kVA transformer is also a 1 MVA transformer. Units above that size commonly serve substantial commercial facilities, industrial distribution and site substations. Solar and battery-storage projects may use step-up transformers, whose voltage arrangement differs from a building-service step-down unit.

For a 2,500 kVA transformer, send impedance, fluid information, dimensions and nameplate weight along with the basic ratings. Those details help us review the unit and plan handling.

For equipment such as a 10 MVA power transformer, include cooling ratings, available test reports and photos of radiators, bushings and detached accessories. Tell us what remains assembled and what has already been removed for transport.

Full-Load Amps by kVA and Secondary Voltage

Full-load current depends on both capacity and voltage. For three-phase transformers, calculated line current equals kVA × 1,000 divided by the square root of 3 × line-to-line voltage. For single-phase transformers, it equals kVA × 1,000 divided by voltage. At the same capacity, a lower output voltage means more current.

The table shows approximate three-phase secondary-current ranges at two common voltages. These are rounded calculations, not measured loading or breaker recommendations. Rely on the nameplate for the actual voltage and rated current.

For a single-phase 50 kVA unit rated at 240 volts, calculated full-load current is approximately 207–209 amps. Do not apply the three-phase formula to that unit. Conductor sizing, overcurrent protection and installation requirements need separate review by a qualified electrical professional using current applicable requirements.

Send the Rating, Condition and Pickup Details

We evaluate size together with voltage, age, condition, fluid and PCB status. A new-in-crate transformer needs different documentation than a removed-from-service or failed unit. Send available test data, explain any known damage and identify whether oil-filled equipment is full, drained or leaking.

To request a written offer, call or text 951-403-5738 or use our transformer offer form. Include nameplate photos, overall photos, quantity, ownership information and the New York pickup location. For multiple units, label the photos so each rating matches the correct transformer.

We also need to know whether the equipment is disconnected, indoors, on a pad or already staged for loading. Share nameplate weight and dimensions when available, plus access restrictions and any forklift or crane available onsite.

Our buying and pickup process includes coordinating rigging and suitable trucking, or seller loading if preferred. We have no public New York drop-off yard; we coordinate pickup at your location. After a pickup inspection confirms the equipment matches the photos, payment follows the agreed terms by check, ACH or wire.