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Square D 4491S1W27 - Control Transformer 480V/120V 0.5kVA

Square D
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Square D 4491S1W27 is a compact industrial control transformer designed to step down primary voltage for control circuit applications. It operates with a voltage rating of 480V primary to 120V secondary and a current rating of 0.5 kVA, housed in a durable metal enclosure measuring 2.3 in (57.9 mm) x 2.3 in (57.9 mm) x 1.2 in (31.3 mm) with a weight of 0.716 lb. The unit features a single-phase configuration with a 50/60 Hz frequency rating and is constructed with a copper coil for reliable performance. It complies with UL and CSA standards for industrial safety and is designed for use in motor control centers, panel boards, and automation systems. Typical applications include providing isolated power for programmable logic controllers, relays, and contactors in manufacturing and process control environments.

Key Features & Specifications
  • Type: Industrial control transformer, metal enclosure, copper coil
  • Voltage Rating: 480V primary / 120V secondary
  • Current Rating: 0.5 kVA
  • Dimensions: 2.3 in (57.9 mm) x 2.3 in (57.9 mm) x 1.2 in (31.3 mm) (Height x Width x Depth)
  • Weight: 0.716 lb
  • Standards: UL, CSA
  • Applications: Motor control centers, panel boards, automation systems
  • Phase: Single
  • Hz: 50/60
  • Coil Material: Copper
  • Enclosure: Metal
  • Installation Type: Panel mount


Product Identification
  • UPC: 78590119432
  • GTIN: 00785901194323