Can the LDC-55B be used for dimmable higher-power LED downlights?

Yes, if the fixture is built for constant current operation at 500mA and the LED load is within the 27-56V constant current range. This is a 55W constant current driver, so it is meant for LED loads that need regulated current instead of constant voltage input.

Is the LDC-55B suitable for dimmable signage modules?

It can be suitable for signage modules designed as a constant current load at 500mA within 27-56V. It should not be selected for signage products that expect a constant voltage source, because this model regulates output current.

Can I use the LDC-55B on a small LED array where dimming is needed?

Yes, if the array is specified for 500mA constant current drive and its combined forward voltage stays within the 27-56V CC range. The 55W rating gives more output capacity than the 35W family members while keeping the same voltage window.

How do I check LED compatibility with the LDC-55B?

The LED load needs to be a constant current design rated for 500mA, with a total forward voltage inside the 27-56V range. The number of LEDs depends on the forward voltage of each LED, so compatibility should be evaluated from the full LED load voltage rather than a fixed LED count.

What operating conditions is the LDC-55B rated for?

The listed operating temperature range is -40°C to +80°C, which is broader on the low end than the 35W models. No IP rating is shown in the provided specs, so wet-location or exposed-environment use should be evaluated at the fixture or enclosure level.

Image shown is a representation only. Exact specifications should be obtained from the product datasheet.

Mean Well

Mean Well LDC-55B Linear LED Driver 55W 500~1600mA Adjustable Output - Dimmable

constant powerflicker freeultra slim design30mm width

SKU:

LDC-55B

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COLD START 30A(twidth=250μs measured at 50% Ipeak) at 230VAC; Per NEMA 410

Key Features

✓Constant Power mode output
✓Metal housing design
✓Full power at 70~100% max current
✓Built-in active PFC function
✓Flicker-free design
✓No load/standby power consumption<0.5W
✓Output current level pre-settable
✓Function options: 3 in 1 dimming(dim-to-off); DALI interface, push dimming
✓Typical lifetime>50000 hours
✓SELV and isolated
✓Class 2 power supply
✓5 years warranty

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Model	Power	Voltage	Current	IP Rating
Mean Well LDC-80DA2 Linear LED Driver 80W 700~2100mA Adjustable Output - DALI2	80W	60V	1.4A	Indoor	View
Mean Well LDC-80DA Linear LED Driver 80W 700~2100mA Adjustable Output - DALI	80W	60V	0.7A	Indoor	View
Mean Well LDC-80B Linear LED Driver 80W 700~2100mA Adjustable Output - Dimmable	80W	60V	0.7A	Indoor	View
Mean Well LDC-80 Linear LED Driver 80W 700~2100mA Adjustable Output	80W	60V	0.7A	Indoor	View
Mean Well LDC-55DA2 Linear LED Driver 55W 500~1600mA Adjustable Output - DALI2	55W	60V	1.05A	Indoor	View
Mean Well LDC-55DA Linear LED Driver 55W 500~1600mA Adjustable Output - DALI	55W	60V	0.5A	Indoor	View
Mean Well LDC-55 Linear LED Driver 55W 500~1600mA Adjustable Output	55W	60V	0.5A	Indoor	View
Mean Well LDC-35DA2 Linear LED Driver 35W 300~1000mA Adjustable Output - DALI2	35W	60V	0.7A	—	View
Mean Well LDC-35DA Linear LED Driver 35W 300~1000mA Adjustable Output - DALI	35W	60V	0.3A	Indoor	View
Mean Well LDC-35B Linear LED Driver 35W 300~1000mA Adjustable Output - Dimmable	35W	60V	0.3A	Indoor	View
Mean Well LDC-35 Linear LED Driver 35W 300~1000mA Adjustable Output	35W	60V	0.3A	Indoor	View

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Key Features

✓Constant Power mode output

✓Metal housing design

✓Full power at 70~100% max current

✓Built-in active PFC function

✓Flicker-free design

✓No load/standby power consumption<0.5W

✓Output current level pre-settable

✓Function options: 3 in 1 dimming(dim-to-off); DALI interface, push dimming

✓Typical lifetime>50000 hours

✓SELV and isolated

✓Class 2 power supply

✓5 years warranty

Mean Well LDC-55B Linear LED Driver 55W 500~1600mA Adjustable Output - Dimmable

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Mean Well LDC-55B Linear LED Driver 55W 500~1600mA Adjustable Output - Dimmable

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