Up for sale is a genuine Acme Electric TF Series single-phase low-voltage distribution transformer (Catalog Number: TF279260S). Precision-engineered for demanding industrial and export markets, this heavy-duty 1 kVA industrial step-down transformer efficiently regulates multiple incoming line voltages down to standard 120/240V configurations. It features a fully encapsulated, non-ventilated core housed inside a rugged NEMA 3R steel enclosure, making it an exceptional choice for harsh, corrosive environments, chemical processing, wastewater treatment plants, and coastal installations. Outfitted with an integrated electrostatic shield to minimize electrical noise, this highly efficient unit delivers quiet, long-lasting performance that exceeds standard industrial power parameters.

Key Features

Fully Encapsulated Construction: Core and windings are completely embedded in a tough epoxy-silica blend to seal out moisture, airborne contaminants, and corrosive chemicals.
Integrated Electrostatic Shield: Built-in copper shield filters out structural line transients and high-frequency noise, protecting sensitive downstream control circuits.
NEMA 3R Rated Steel Enclosure: Tough, weather-resistant powder polyurethane coated finish designed for dependable indoor or outdoor wall-mount installations.
Vibration-Isolating Design: Advanced silicon steel architecture ensures a highly efficient operational curve with sound levels engineered well below standard NEMA benchmarks.

Technical Specifications

Brand: Acme Electric (Hubbell)
Product Series: TF Series Export Model
Catalog Number / MPN: TF279260S
UPC Code: 047503400005
Power Rating / Capacity: 1 kVA (1,000 VA)
Number of Phases: Single Phase (1 Ph)
Frequency Rating: Dual Rated 50 Hz / 60 Hz
Primary Input Voltages: Multi-Tap 190 V, 208 V, 220 V, 240 V x 380 V, 416 V, 440 V, 480 V AC
Secondary Output Voltages: 120 V / 240 V AC
Winding Material: High-Conductivity Copper Windings
Insulation Class: Class H / Class R (180°C Max Material Limit)
Temperature Rise Spec: 115°C Winding Rise at a 40°C Ambient Air Baseline
Enclosure Type / Material: NEMA 3R Totally Enclosed Non-Ventilated Steel
Mounting Configuration: Wall Mount (Integrated Structural Flanges with Knockouts)
Regulatory Compliance Standards: UL 506 Listed, CSA C22.2 No. 47 Certified, CE Marked
Physical Unit Dimensions: 10.50 Inches Height x 5.50 Inches Width x 5.13 Inches Depth
Net Weight: 24.0 lbs (Approx. 10.9 kg)

Installation & Wiring Precautions

Tap Settings Alignment: Ensure your primary supply configuration matches the exact terminal jumper alignment shown on the internal wiring diagram layout before feeding line power into the transformer.
Grounding Requirements: To ensure effective operation of the internal electrostatic shielding and to fulfill certified code safety thresholds, the metallic enclosure frame must be hard-bonded to a dedicated equipment grounding conductor.

Please review your system's total volt-ampere (VA) draw and multi-tap source requirements carefully to confirm a precise match before completing your purchase. Feel free to send a message if you have any questions!