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Front view of Unique Direct Burial composite enclosure transformer with black UV-resistant housing and sealed lid, ready for underground landscape installation.

Unique Direct Burial Composite Enclosure Transformer - 300W & 600W

Brand: Unique
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$963.10
$722.33
SKU 300DB

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Unique Direct Burial Composite Enclosure transformers are engineered for concealed, in-ground low-voltage lighting installations. Fully potted and sealed, these units protect internal electrical components from moisture, soil, and corrosive environments while delivering stable multi-tap secondary voltages for landscape and architectural lighting systems.

  • Watts & models: Available in 300W and 600W capacities to power multiple fixtures or larger commercial runs; select the model that matches your load and run-length requirements.
  • Durable construction: Injection-molded, glass-filled resin housing with UV-resistant finish and molded silicone gasket for a weather-tight seal in subterranean installations.
  • Protected design: Fully potted and sealed enclosure with replaceable 3AG time-delay primary fuse and optional secondary in-line fusing to reduce nuisance trips and protect circuits.
  • Output & wiring: Ready-to-wire, color-coded 10 AWG output leads provide clear connections; multi-tap secondary voltages vary by model—consult model specs for exact taps.
  • Installer features: Separate primary and secondary compartments, conduit flats on all four sides, and a 1/2"-14 NPSM threaded center lid hole for mounting fixtures or accessories.
  • Performance & warranty: Engineered single-core construction with welded output taps for reliable conductivity; unit must be hardwired to 120V primary and includes a limited lifetime warranty against manufacturer defects.

These transformers are ideal for residential and commercial projects where concealing the power source is necessary. Installation must be completed by a qualified electrician; always verify model-specific secondary tap voltages, dimensions, and weight before installing to ensure compatibility with your lighting layout.

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Frequently Asked Questions

What models and wattages are available?
Available in 300W and 600W capacities; choose the model to match your total fixture load and run length.
Is this transformer safe for direct burial?
Yes. The unit is fully potted and sealed with an injection-molded resin housing and molded silicone gasket for a weather-tight burial installation.
What wiring and protection features are included?
Includes ready-to-wire, color-coded 10 AWG output leads and a replaceable 3AG time-delay primary fuse; optional secondary in-line fusing is available.
Do these units require professional installation?
Yes. All models must be hardwired to a 120V primary circuit by a qualified electrician to meet electrical codes and ensure safe operation.
What warranty is provided with these transformers?
Units include a limited lifetime warranty against manufacturer defects; refer to the manufacturer warranty terms for full details.