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Low Voltage Transformers & Lighting Transformers

Low Voltage Transformers for Lighting Systems

Shop professional low voltage transformers at LeanLight โ€” magnetic and electronic transformers designed for 12V and 24V lighting applications. These reliable units step down line voltage to safely power low-voltage halogen, LED, and specialty lighting systems. Ideal for landscape lighting, undercabinet lights, display lighting, track lighting, and architectural applications. Free shipping on every order plus volume discounts.

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Keystone KTET-60-1-WC-F Halogen Low Voltage Transformer Ballast - 60W, 12V

Keystone Technologies
Only 5 left!

Keystone KTET-60-1-WC-F 60W Low Voltage Transformer Ballast for 12V Halogen Lighting Professional-grade low voltage transformer ballast engineered ...

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Original price $22.99
Original price $22.99 - Original price $22.99
Original price $22.99
Current price $20.49
$20.49 - $20.49
Current price $20.49
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Original price $19.99 - Original price $19.99
Original price
$19.99
$19.99 - $19.99
Current price $19.99

Keystone 75 Watt 120V to 12 Volt Low Voltage Step Down Ballast - KTET-75-1-SCP-DIM-HV-AL

Keystone Technologies
24 in stock

Keystone 75W Dimmable Low Voltage Step Down TransformerThe Keystone KTET-75-1-SCP-DIM-HV-AL is a professional-grade dimmable electronic low voltage...

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Original price $19.99 - Original price $19.99
Original price
$19.99
$19.99 - $19.99
Current price $19.99

What Youโ€™ll Find in This Collection

  • Magnetic Low Voltage Transformers โ€“ Durable core-and-coil units for 12V and 24V systems
  • Electronic Low Voltage Transformers โ€“ Compact, lightweight, and efficient options
  • LED-Compatible Transformers โ€“ Designed to work reliably with modern LED loads
  • Multi-Tap & Specialty Transformers โ€“ Flexible voltage options for varied installations
  • Related Control Gear โ€“ Complementary transformers and power supplies for lighting systems

Why Choose Our Low Voltage Transformers?

  • Reliable performance โ€“ Stable output voltage protects lamps and LEDs
  • Magnetic & electronic options โ€“ Choose the right technology for your application
  • 12V and 24V availability โ€“ Covers the most common low-voltage lighting systems
  • LED compatible โ€“ Many models work with modern LED fixtures and lamps
  • Compact designs โ€“ Electronic transformers fit tight spaces and modern fixtures
  • Easy replacements โ€“ Direct cross-references for common OEM transformer models

Common Applications

  • Landscape and outdoor low-voltage lighting
  • Undercabinet and task lighting
  • Display, retail, and museum lighting
  • Track and monorail lighting systems
  • Architectural and accent lighting
  • Residential and commercial low-voltage installations

How to Choose the Right Low Voltage Transformer

  1. Output Voltage
    Confirm whether your system requires 12V or 24V.
  2. Load / Wattage
    Add up the total wattage of all connected lamps or LEDs. Choose a transformer with enough capacity (typically 20โ€“25% headroom is recommended).
  3. Magnetic vs Electronic
    โ€ข Magnetic โ€“ Rugged, reliable, and often preferred for outdoor or higher-wattage loads
    โ€ข Electronic โ€“ Smaller, lighter, quieter, and more efficient for indoor and lower-wattage applications
  4. LED Compatibility
    If powering LED fixtures, confirm the transformer is rated for LED loads (some older magnetic units may not perform well with LEDs).
  5. Input Voltage
    Most units accept standard 120V input. Verify compatibility with your supply.

Brands We Carry

Professional-grade low voltage transformers from trusted manufacturers built for reliable residential, commercial, and landscape lighting use.

Why Buy from LeanLight?

  • Fast & free shipping on every order (ships from Georgia, 1โ€“5 day delivery in the USA)
  • Volume and project discounts available
  • 30-day satisfaction guarantee with easy returns
  • Georgia-based lighting specialists focused on commercial and industrial solutions since 2008

Frequently Asked Questions

What does a low voltage transformer do?
A low voltage transformer steps down standard line voltage (usually 120V) to a safer 12V or 24V output used by many landscape, undercabinet, display, and accent lighting systems.

Magnetic vs. electronic transformers โ€” which should I choose?
Magnetic transformers are durable and well-suited for outdoor or higher-wattage loads. Electronic transformers are compact, lightweight, quieter, and more efficient โ€” ideal for indoor and lower-wattage applications.

Can I use these transformers with LED lights?
Many modern low voltage transformers are LED-compatible. Always check the product specifications, as some older magnetic transformers may not work reliably with LED loads.

How do I size the transformer?
Add the total wattage of all fixtures on the circuit, then choose a transformer with at least 20โ€“25% extra capacity to avoid overloading and ensure long life.

How do I find the right replacement?
Check the label on the existing transformer for input/output voltage, wattage rating, and model number. You can also contact us with the old part number for a cross-reference.