L3 High-Power Isolated LED Sign Power Supplies

FAHOLD L3 high-power LED sign power supplies deliver isolated, single-output constant-voltage power for commercial signage, illuminated advertising displays and high-current LED lighting systems.

The L3 range includes 19 models across 100W–1200W power classes, with 12V, 24V, 36V and 48V DC output options. Depending on the model, rated AC input is 100–277Vac or 120–277Vac, with IP67/IP68 enclosure options for demanding installation environments.

Compare L3 models by output voltage, wattage, current and input requirements. Contact FAHOLD for technical datasheets, certification verification, samples and bulk OEM/ODM quotations.

19 products
Page 2 of 3

High-Power Isolated LED Power Supplies for Commercial Signage

FAHOLD L3 Series LED power supplies are designed for sign manufacturers, lighting OEMs and commercial project suppliers requiring higher-power, isolated constant-voltage output.

The L3 platform offers 100W to 1200W power classes with 12V, 24V, 36V and 48V output options. Its single-output architecture is intended for compatible fixed-voltage LED systems that require one regulated DC power output rather than multiple independently limited channels.

Common procurement applications include larger illuminated signs, commercial advertising displays, high-power LED strip installations and OEM lighting assemblies.

Unlike compact signage power supplies intended for smaller loads, L3 models extend into 600W, 800W, 1000W and 1200W power classes for higher-capacity 48V systems.

Compare L3 High-Power LED Sign Power Supply Models

The following L3 models illustrate the available output-voltage, power-class and AC-input combinations.

L3 ModelPower ClassDC OutputRated AC Input
L3-120N-012120W12V / 10A100–277Vac
L3-300N-012300W12V / 25A100–277Vac
L3-300N-048300W48V / 6.25A100–277Vac
L3-400N-024400W24V / 16A120–277Vac
L3-400N-036400W36V / 11.11A100–277Vac
L3-600N-048600W48V / 12.5A120–277Vac
L3-1K2N-0481200W48V / 25A120–277Vac

Power class refers to the published catalog model rating. Where the product's voltage multiplied by its listed current differs from that power class, confirm the actual continuous output rating and allowable load against the approved model datasheet. For example, the L3-400N-024 is a 400W-class model with a listed 24V/16A output, equivalent to 384W at those stated values.

Buyers should select models based on the required DC voltage, actual output-current capacity, AC input, wiring design and installation conditions—not power-class naming alone.

For the complete technical matrix, including power factor, typical efficiency and dimensions, see the FAHOLD L3 Series Technical Specifications.

12V and 24V LED Power Supplies for Signage

The 12V L3 options are suited to compatible high-current 12V LED modules, sign sections and fixed-voltage LED loads.

For example, the L3-300N-012 provides 12V at 25A with a published 300W output rating. It is a potential choice for larger 12V LED installations where the connected load and wiring are designed around a high-current single output.

The L3 Series also includes 24V configurations for compatible commercial LED modules and constant-voltage lighting systems.

At the same wattage, a 24V load draws approximately half the current of an equivalent 12V load. This can influence conductor sizing, voltage drop and the distribution of electrical loads.

However, a 24V supply must only be selected when the connected LED load is designed for 24V operation.

36V and 48V Power Supplies for Higher-Power LED Systems

L3 models with 36V and 48V outputs serve projects that require these specific DC voltage platforms.

The 48V range is particularly relevant to higher-power signage and LED systems where the installation is designed for a higher-voltage constant-voltage supply.

Representative examples include:

  • L3-300N-048: 300W-class, 48V/6.25A output for compatible 48V lighting loads.
  • L3-600N-048: 600W-class, 48V/12.5A output for higher-capacity LED systems.
  • L3-1K2N-048: 1200W-class, 48V/25A output for very high-power, fixed-output applications.

The final model should be selected according to the LED system's voltage rating, total connected power, current requirements and allowable thermal operating conditions.

For installations with long cable runs or distributed lighting loads, the system designer should also evaluate voltage drop, conductor capacity, overcurrent protection and compliance with the relevant electrical requirements.

100–277Vac vs. 120–277Vac Input Selection

L3 models are available with different AC input ratings.

Many lower and medium-power L3 models use a 100–277Vac rated input. Certain higher-power models, including L3-600N-048 and L3-1K2N-048, are specified for 120–277Vac input.

This distinction matters when selecting a supply for a particular electrical system.

For North American commercial projects, verify the actual nominal supply voltage and permitted operating range before choosing a model.

A category title or model family designation should not replace the electrical input limits stated on the individual product datasheet.

IP67/IP68 LED Power Supplies for Demanding Installations

The L3 product platform includes IP67 and IP68 enclosure configurations intended for demanding operating environments.

These options can be relevant to outdoor advertising displays, exposed commercial signage and other lighting systems where enhanced ingress protection is required.

However, the specified IP rating does not automatically establish that the entire installation is suitable for every wet-location or outdoor environment.

Before placing an order, confirm:

  • The IP rating of the exact product configuration
  • Ambient temperature and thermal conditions
  • Connector and cable-entry protection
  • Mounting space and enclosure dimensions
  • Required North American safety listing
  • Project-specific installation requirements

The L3 platform is non-dimmable during normal operation. Offline programming, where supported, is for product configuration and does not indicate compatibility with TRIAC, PWM, 0–10V or other dimming interfaces.

L3 Power Supplies vs. Class 2 Multi-Channel Power Supplies

An L3 supply is intended for isolated, single-output constant-voltage applications.

When the project requires multiple separately limited output circuits rather than a single high-power DC output, a different power distribution architecture may be required.

FAHOLD also offers Class 2 Multi-Channel LED Power Supplies for applicable signage applications.

For a broader selection that includes compact L2-E models, visit the Single-Output LED Sign Power Supplies category.

For application-level guidance covering channel letters, light boxes and illuminated advertising signs, explore FAHOLD Sign Lighting Solutions.

Request L3 LED Power Supply Samples and Bulk Quotations

FAHOLD supports OEM customers, sign manufacturers, lighting equipment suppliers and project procurement teams with L3 model selection and technical documentation.

To receive a model recommendation or quotation, provide:

  • Required output voltage: 12V, 24V, 36V or 48V
  • Total connected LED wattage and output current
  • Available AC supply voltage
  • Required IP protection and installation environment
  • Safety certification and project documentation requirements
  • Estimated order quantity and delivery schedule

FAHOLD can review the application requirements and confirm the appropriate model, datasheets, sample availability and bulk purchasing conditions.

Need multiple L3 models evaluated? Use Compare to review available product specifications or add selected models to your Inquiry List and submit one combined RFQ for technical and commercial review.

Frequently Asked Questions

What is the maximum power available in the FAHOLD L3 Series?

The FAHOLD L3 Series includes models in power classes from 100W to 1200W. The highest listed model, L3-1K2N-048, provides 48V at 25A with 120–277Vac input. Confirm continuous output ratings and installation conditions in the approved datasheet.

Which L3 model is suitable for a 300W 12V LED signage system?

The L3-300N-012 provides a 12V/25A output with a published 300W rating and 100–277Vac input. It can be considered for compatible 12V LED loads, provided the actual connected wattage, design headroom, wiring and installation conditions meet the product requirements.

Does FAHOLD offer a 600W 48V LED power supply?

Yes. The L3-600N-048 is a 600W-class isolated constant-voltage LED power supply with 48V/12.5A output and 120–277Vac input. It is designed for compatible higher-power fixed-output LED lighting applications.

Do all L3 power supplies support 100–277Vac input?

No. L3 input ratings vary by model. Many lower-power models use 100–277Vac, while selected higher-power models use 120–277Vac. Always confirm the exact AC input range on the product datasheet.

Are L3 LED power supplies suitable for outdoor commercial signs?

Selected L3 configurations offer IP67 or IP68 ingress protection. Their suitability for outdoor signage depends on the exact configuration, electrical installation, cable connections, operating temperature and applicable certification requirements.

Are FAHOLD L3 LED power supplies dimmable?

No. The L3 Series is a non-dimmable isolated constant-voltage platform. Offline programming does not provide normal-operation dimming. Projects requiring TRIAC, 0–10V, PWM or another dimming interface should be reviewed for an alternative compatible FAHOLD driver.

Are all high-power L3 models UL Class 2 certified?

Class 2 status should not be assumed for high-power, single-output L3 models. Buyers must confirm the applicable certification and output-circuit requirements for the exact product and intended installation. FAHOLD can provide documentation for engineering review.

Can I request L3 samples before placing a bulk order?

Yes. FAHOLD L3 product pages list sample-order options starting from 10 pieces and a standard MOQ of 500 pieces. Contact the sales team to confirm current sample availability, applicable quantity requirements, specifications and lead times for the selected model.

What information is required for an L3 OEM quotation?

Provide the target L3 model or required output voltage, wattage, current, AC input, installation environment, IP rating, certification requirements and estimated order quantity. FAHOLD can then review the proposed configuration and provide the relevant technical and commercial information.

Scroll to Top