Mean Well ELG-150-42AB Power Supply 150W 42V - Adjustable and Dimmable

The ELG-150-42AB includes both the 'A' dimming input (0–10V, 10V PWM, or resistance control) and the 'B' built-in output trimming potentiometer. The potentiometer lets you manually adjust the output level within the 21–42V constant-current range during installation, while the external dimming input allows run-time brightness control via a 0–10V signal or compatible dimmer.

Yes. The ELG-150-42AB is rated IP65, suitable for dust-tight and water-spray-resistant environments such as covered outdoor stages, beer gardens, or open-sided canopy structures where the driver is shielded from direct rain. Its 150W capacity supports meaningful runs of 42V strip lighting in those applications.

The IP65 rating provides protection against water spray and condensation, which covers many greenhouse environments. The -40°C to +90°C operating range also accommodates the elevated ambient temperatures common in growing spaces. However, for installations with direct water immersion risk, the IP67-rated ELG-150-42B or ELG-150-42D2 would offer additional protection.

The ELG-150-42AB delivers 150W at 42V. Divide 150W by your strip's watt-per-meter rating to estimate the maximum run length. For example, a 12 W/m strip yields approximately 12.5 meters maximum; a 20 W/m strip yields approximately 7.5 meters. Check your strip's rated power per meter and derate to 80% for continuous operation, giving roughly 10 m and 6 m respectively in those examples.

Yes. The 0–10V dimming input on the ELG-150-42AB integrates directly with the 0–10V outputs common in commercial building management systems, and the 150W capacity handles extended linear runs of 42V architectural LED strip. The built-in trim pot also lets the installer fine-tune the light output level during commissioning.

Yes. The adjustable output (21–42V via the built-in potentiometer) and 0–10V dimming make the ELG-150-42AB a flexible choice for retrofitting legacy fluorescent troffers or strip fixtures with 42V LED replacement modules, especially where an existing 0–10V dimming infrastructure is already in place.

All three share the same 150W, 42V, 3.57A output and physical dimensions. The ELG-150-42A provides only the external 0–10V/PWM/resistance dimming input (no trim pot). The ELG-150-42B provides only the built-in output-voltage trimming potentiometer (no external dimming). The ELG-150-42AB includes both features. The A and AB models are rated IP65; the B model is rated IP67.