EM300S12DC 300W Outdoor Magnetic 12VDC Transformer

EM300S12DC 300W Outdoor Magnetic 12VDC Transformer

The EM300S12DC is a 300W outdoor magnetic DC transformer / LED driver designed for compatible 12VDC low voltage lighting loads. The encapsulated transformer is protected by a NEMA 3R black powder-coated steel enclosure with manual reset circuit protection.

Why Choose the EM300S12DC?

✔ 300W 12VDC Capacity
Provides up to 300W of single-circuit DC power for compatible lighting systems.

✔ Outdoor NEMA 3R Housing
Black powder-coated steel enclosure is built for protected outdoor installations.

✔ Manual Reset Breakers
Primary and secondary breakers provide dedicated transformer protection.

✔ 90% Efficiency
Manufacturer-rated efficiency supports reliable 12VDC power delivery.

Electrical Specifications

• Input Voltage: 120V 60Hz
• Max. Input Current: 3A at full load
• Output Voltage - No Load: 12.7VDC
• Output Voltage - Fully Loaded: 11.5VDC
• Max. Total Wattage: 300W
• Max. Output Current: 25A
• Efficiency: 90%

Construction & Certification

• Enclosure: Black powder-coated steel, outdoor NEMA 3R
• Transformer Construction: Encapsulated magnetic transformer with separated primary and secondary windings
• Certification: Conforms to UL 2108; certified to CSA C22.2 No. 250.0
• Primary Breaker: 5A manually reset
• Secondary Breaker: 25A manually reset
• Dimensions: 8 × 4.15 × 3.41 in

How to Select the 300W 12VDC outdoor magnetic transformer

Choose the EM300S12DC when a project requires a 300W 12VDC outdoor magnetic transformer and the available supply matches 120V 60Hz. Confirm that every connected fixture accepts 12VDC and that the planned load fits the transformer’s circuit configuration. Its black powder-coated NEMA 3R steel enclosure is intended for outdoor transformer installations.

This is a single-circuit model, so all connected fixture wattage counts toward the listed 300W maximum. The specifications show 12.7VDC at no load and 11.5VDC at full load, giving installers a reference for expected output as the connected load changes. Final transformer location, wiring, circuit protection and code compliance should be reviewed by a qualified installer before the system is energized.

Frequently Asked Questions

What lighting systems can use the EM300S12DC?
This 300W 12VDC outdoor magnetic transformer is intended for compatible low-voltage landscape or architectural lighting that accepts 12VDC power. The connected load must stay within the listed 300W capacity and 25A output-current limit.

Is the EM300S12DC dimmable?
Dimming is not listed as a feature in the supplied product data. Confirm dimmer compatibility in the EMCOD specification sheet before designing a dimming system.

Can this transformer be installed outdoors?
Yes. Its black powder-coated NEMA 3R steel enclosure is specified for outdoor transformer installations. Final placement and wiring must still follow the product instructions and applicable electrical requirements.

Compare voltage, capacity, circuit and enclosure options in our low-voltage landscape lighting transformer collection.

Official EMCOD Specification Sheet: Download PDF