300W Landscape Lighting Transformers

Shop 300 watt landscape lighting transformers for compatible low-voltage outdoor lighting. Compare capacity, mounting method, output voltage and controls before choosing a power supply for paths, garden accents or outdoor living areas.

Choose your 300W landscape transformer

Choose a 300W transformer by controls and mounting

Compare conventional multi-tap supplies, integrated smart controls and in-ground options. For a standard cabinet example, see the Total Light TL-TRAN300-SS. For connected control, compare Kichler 15SCT300SS and the broader smart transformer collection.

System-specific models such as WAC COLORSCAPING require a compatibility check before being used with other fixtures. A shared 300W rating does not make every control system interchangeable.

Match the rating to the lighting load

Use the fixture or lamp input requirements and the transformer's loading instructions. Watts and volt-amperes are not interchangeable for every LED load. Check total capacity, individual circuit limits and any manufacturer-required allowance. Where a product offers several capacities, select the 300W option before adding it to your cart.

Check output voltage, wire and controls

Match AC/DC supply type and the permitted voltage range to every connected fixture. Plan cable gauge, length and load together; increasing transformer capacity does not eliminate voltage drop. Confirm whether a timer, photocell or app controller is included or sold separately, and verify dimming compatibility for the whole system.

Complete the plan with landscape lighting wire, waterproof wire connectors and timers and controllers.

Compare other transformer options

100W transformers · 150W transformers · 600W transformers · Smart transformers · All landscape transformers

How many lights can a 300W transformer power?

There is no fixed fixture count. Add the actual input loads, follow the rated loading and circuit limits, and evaluate each cable run. Use the selected transformer's instructions to finalize the design.