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3 kVA 208 Volt to 240Y139 Volt Isolation Transformer BC3B-S

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Availability: Available for order. Production Time: 2 weeks

US$ 958.00

Quick Overview

Catalog No.: BC3B-S
3 kVA • Three Phase • Primary: 208 Volt • Secondary: 240Y139 Volt
Conductor: Copper

Custom Winding Configuration (Catalog No. might be changed accordingly)

Add Extended warranty to the 1 Year Standard.

+US$ 460.00

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US$ 958.00


Three phase Isolation Transformer BC3B-S has primary and secondary windings that are physically separated from each other. Secondary neutral to ground bonding eliminates common mode noise, providing an isolated neutral-ground reference for sensitive equipment.


Isolation Transformer BC3B-S Winding Schematic:

Delta-Wye(DYn) Three phase connection

Preliminary General Drawing. (Dimensions in inches).


Isolation Transformer general dimensions

*All information and images presented here is based on preliminary data or design and may be changed without prior notice.
Request Drawing Proof to confirm dimensions from Optional Feature tab, if it is critical.

Full Specification

Catalog No. BC3B-S
Product Type Isolation Transformer
Phase Three
Power Rating 3 kVA
Frequency, Hz 60
Vector Group Delta-Wye(DYn)
Primary voltage 208 Volt
Primary Max Current, Amps 8.3
Primary Terminals X1-X2-X3
Primary Terminal Lugs Terminal Block
Primary Voltage Taps 0%; ±5.0%
Secondary Voltage 240Y139 Volt
Secondary Max Current, Amps 7.2
Secondary Terminals H0-H1-H2-H3
Secondary Terminal Lugs Terminal Block
Winding Conductor Copper
Temperature Rise, °C 115
Insulation Class 180 (H)
Insulation Level, (B.I.L), kVA 10
Efficiency at 35% Load, % 92.5
ANSI/IEEE Impedance, % 6.5-7.5
Sound Level, dB 40
Standards and Certifications CSA Standard C22.2. No.47 Air Cooled Transformers (Dry Type)
CSA certified. File No. LR34493 , UL Listed. File No.E108255.
ISO9001 Quality Certification.
Enclosure Type Nema 3R. General purpose indoor ventilated steel enclosure suitable for dry locations. Sprinkler Proof when angle between sprinkler and opening does not exceed 45°
Weight, Lbs 85.0
Country of Manufacture Canada

Transformer Calculator

Help: To calculate required kVA of the transformer enter Load Amps, Load Volt and press "Required kVA" button. Also you can calculate Current from other two parameters.
Note: Recommended add up to 20% to the calculated kVA