• Dimmable LED driver with phase dimming
• Compatible with forward phase and reverse phase dimmers
• Label lists compatibility with ELV, MLV, and Triac dimmers
• Constant voltage design
• Converts110–277V AC inputto12V DC output
• Delivers up to25A
• Supports up to300W max
• Suitable for dry, damp, and wet locations
• Marked Class P,Type HL,SELV, and RoHS
• cULus Listed
• Conforms to UL 8750,CAN/CSA-C22.2 No. 250.13, and FCC
• Clearly marked input and output wiring
• Requires wire rated for at least90°C (194°F)

The MX12300 Dimmable Transformer 300 Watt Constant Voltage LED Driver is a high-capacity low-voltage power supply designed to provide stable12V DC output for compatible LED lighting systems. According to the product label, this unit is a dimmable LED driver with phase dimming capability and is intended for use with forward phase and reverse phase dimmers, including ELV, MLV, and Triac dimmers. This makes it a practical solution for larger LED installations that require dependable dimming performance and consistent low-voltage power delivery.

Built as a constant voltage driver, the MX12300 accepts a wide110–277V AC input range and converts it to12V DC output, delivering up to25Awith a maximum power rating of300W. This higher output capacity makes it well suited for applications requiring greater wattage support while maintaining stable 12V DC performance.

The product label states that this driver is suitable for dry, damp, and wet locations, offering flexibility for a range of installation environments when used properly and in accordance with applicable electrical codes. The unit is also marked Class P,Type HL,SELV, and RoHS, and it is cULus Listed. In addition, the label states that it conforms to UL 8750,CAN/CSA-C22.2 No. 250.13, and FCC requirements.

For wiring reference, the input side is labeled AC L (Black),AC N (White), and Ground (Green). The output side is marked LED + (Red)and LED – (Black). The label also specifies that for all connections, installers must use wire rated for at least 90°C (194°F).

The MX12300 is an excellent choice for projects requiring a12V DC constant-voltage dimmable LED driver with broad dimmer compatibility, recognized compliance markings, and increased wattage capacity for larger low-voltage LED lighting applications.

Installation Note

The product label identifies the wiring as follows:

Input

• Black= AC L
• White= AC N
• Green= Ground

Output

• Red= LED +
• Black= LED –

For connections, the label states that installers must use wire rated for at least 90°C (194°F).