Comparison · Power supplies

PTA-600W-12V (500 W) or MeanWell EPP-500-54

Two models side by side: measurements taken by the author in their reviews, and their conclusions. The better value in each row is highlighted.

In brief: Based on review measurements: Test current: PTA-600W-12V (500 W) (50 A vs. 11.3); Efficiency: MeanWell EPP-500-54 (95 % vs. 84); Temperature rise: PTA-600W-12V (500 W) (105 °C vs. 115).

Model	PTA-600W-12V (500 W)2025Read review →	MeanWell EPP-500-542021Read review →
Power, W	500	500
Test current, A	50	11.3
Ripple, mV	150	150
Efficiency, %	84	95
Temperature rise, °C	105	115
Review conclusion	With reservations	Recommended

Only in one review: Voltage 54 V (MeanWell EPP-500-54); Current 40 A (PTA-600W-12V (500 W)); In test 550 W (MeanWell EPP-500-54); Under load 11.947 V (PTA-600W-12V (500 W)); No load 1.5 W (MeanWell EPP-500-54); Protection 11.3 A (MeanWell EPP-500-54).

PTA-600W-12V (500 W): Low ripple and thermal protection, but poor heat transfer limits sustained operation to about 30–32 A.

MeanWell EPP-500-54: The compact PSU showed high efficiency and acceptable ripple, but the transformer gets noticeably hot under heavy load.

Figures were taken from the review text and checked against the quoted passages. Measurement conditions differ between reviews, so read the reviews yourself before buying. Prices at the time of review.