Hammond 37.5 KVA 504V-492V-480V-468V-456V Transformer

Specifications

• The Hammond Manufacturing F-377P (often distributed under their industrial division, Hammond Power Solutions) is a 37.5 kVA Type F single-phase dry-type encapsulated distribution transformer. This model belongs to their vintage or specialized commercial “Type F” legacy product lines, utilizing a potted design to seal out moisture and dust. 
  • Power Rating: 37.5 kVA 

  • Phase: Single-Phase (1 φ) 

  • Frequency: 60 Hz 

  • Insulation Class: Type F / Class F (155°C or 180°C max limit, commonly rated for a 115°C temperature rise) 

  • Enclosure Rating: NEMA 3R (Weatherproof / Outdoor-rated) 

  • Cooling Type: Dry-type, completely encapsulated/potted with an electrical-grade silica sand and resin compound
  • Voltage & Wiring Configurations

    While specific sub-variants dictate the exact input/output configurations, Hammond’s standard industrial 37.5 kVA Type F units generally fall into one of two common configurations:

    • 600V Primary: 600V Input → 120/240V Output (Split-phase secondary)

    • 480V Primary: 240x480V Input → 120/240V Outpu