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2.73 kVA Step-Down Buck-Boost Transformer, 249V → 220V, 12.4A, Single Phase
BBT Model 1 Rear
BBT Model 1 Side
BBT Model 1 wireway
BBT Model 1 Interior

2.73 kVA Step-Down Buck-Boost Transformer, 249V → 220V, 12.4A, Single Phase

by Sanzo Sales · Part # TX-BB-249V-220V-12.4A

$375.91

2.73 kVA single-phase buck-boost that bucks 249V to 220V (12% correction) at 12.4A. Encapsulated NEMA 3R, cETLus listed. In-stock ships same business day.

Full specifications ↓

Ships in 5-6 weeks

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Specifications

BrandSanzo Sales
PhaseSingle Phase (1-PH), AC
Capacity2.73 kVA
Primary Voltage249V
Primary Amperage10.9A
Secondary Voltage220V
Secondary Amperage12.4A
Maximum Primary OCP15A
Frequency50/60 Hz
Insulation180°C
Temperature Rise115°C
Transformer TypeBuck/Boost
Part #TX-BB-249V-220V-12.4A
ConfigurationEncapsulated Autotransformer
Primary TerminationLead Wires & Terminal Lugs
Secondary TerminationLead Wires & Terminal Lugs
Termination Access(6) ¾" NPT Hubs
Winding MaterialAluminum
Enclosure MaterialSteel
Finish ColorANSI 70 Light Grey
Weatherproof RatingNEMA 3R
Certification ListingcETLus
Dimensions (W×H×D)4.65 × 9.25 × 3.86 in
Weight14 lb

Product Description

The TX-BB-249V-220V-12.4A is a 2.73 kVA single-phase buck-boost transformer that bucks a 249V supply to 220V — a 12% voltage correction — bringing 220V-rated equipment back into its proper operating range. Wired as an encapsulated buck transformer (autotransformer), it carries only the correction portion of the load, so this unit corrects a much larger connected load: up to 12.4A at 220V (2.73 kVA usable line capacity).

Resin-encapsulated in a NEMA 3R steel enclosure (ANSI 70 light grey) for indoor or outdoor mounting at the disconnect. Lead wires and terminal lugs, aluminum windings, 180°C insulation system, 115°C rise, 50/60 Hz, cETLus listed. Use two units in open-delta for three-phase delta systems, three for wye. In-stock units ship the same business day.