"Slim Line" LED Lighting Step-Down Autotransformers

Intended for 347V, 480V or 277V Source of Electrical Supply

  • Outputs - Either 240V or 120V (ideal for 100-277V rated fixtures)
  • Versatile “Slim” Profile: Low Height and Width
  • Robust, reliable, low-cost autotransformer design
  • Power Ratings from 25 to 240VA (see tables below)
  • Open Internal-Mount Component styles (UL Recognized for Canada/US); mounting brackets available
  • Enclosed External-Mount styles (UL Listed for Canada/US), suitable for IP66 applications

Useful Applications

  • Step-down 347V (Canadian) or 480V (US) supply for LED drivers and other types of lighting fixtures
  • Industrial, Commercial, Office, Parking Garage and Street Lighting installations
  • Class B - 130C insulation system - suitable for ambient temperature ranges from -40 to +50C!

Check out our Paper: Demystifying 347V and 480V Lighting Installations

Quick Delivery - we do our best to ship the same day if ordered before 11am    learn how we make payment options easy

We stand behind our products: Read the Slim Line 5-Year Warranty.

  • Enclosed High-Power External Mount Slim-Line LED Lighting Step-Down Transformers, UL Listed.

    ENCLOSED external mount sep-down autotransformers, Models 210043EB (shown), 210098EB & 210083EB. Same popular "Low-Profile" shape with overall dimensions 7.72"L x 1.87"W x 1.49"H.  Fully UL Listed for Canada and the U.S.   Suited for IP66 applications.

    FR530 "Rynite" enclosure (flammability rated UL V-0) and completely epoxy sealed for water resistance.  Provided with integral mounting feet.

    Also available with an internal thermal protector - Model S...

  • "Slim Line" Family of LED Lighting Autotransformers

    "Slim Line" LED Lighting Autotransformers are used to convert 347V, 480V or 277V source electrical supply down to 120V or 240V.  UL Approved for both U.S. & Canada with Class B (130C) insulation. A variety of sizes and form factors with outputs designed to suit your specific application!

    Available as "Open Type" for internal-mount applications (order with or without mounting brackets) or as "Enclosed Type" for external-mount IP66 outdoor applications. Refer to the Slim Line table...

  • Enclosed Mid-Size External Mount Slim-Line LED Lighting Step-Down Transformer, UL Listed.

    Enclosed style for Mid-Power Slim-Line Models 210042EB (shown), 210097EB, 210099EB & 212025EB. FR50 enclosure (flammability rated UL V-0) and completely epoxy sealed for IP66 water resistance.  Also available with internal thermal protector (use model suffix "FB").  Integral threaded nipple for convenient mounting through a standard electrical knock-out.  Fully UL Listed for Canada and the U.S. 

    Dimensions: 3.56"L x 1.91"W x 1.56"H plus Nipple (approx. 0.4...

  • Open-Type Mid-Range Power Models 210042, 210097, 210099 and 212025
    Shown are the popular mid-range power versions of our popular OPEN Internal-Mount Style step-down autotransformers; UL Recognized (C-US). Available with or without brackets as 347:240V@100VA, 347:120V@60VA, 480:240V@75VA and 277: 240@240VA. Also available as a UL Listed ENCLOSED IP66 external mount. Refer to the Slim Line table of parts for further details on all available sizes and ratings of parts.
  • Open-type, High-Power Models 210043, 210098 and 210083
    These are the highest power size of these versatile step-down autotransformers, 347:240V@240VA, 347:120V@125VA, 480:240V@170VA . UL Recognized Class B (130C), Canada/U.S. This image shows the OPEN Internal Style parts with or without brackets. Refer to the Slim Line table of parts for further details on ratings and links to specifications.
  • Slim Line LED Lighting Transformers, Open Internal Style Models 210041, 210100, 211063 and 212024
    These are the smallest size of these versatile step-down autotransformers. This image shows the Open Internal Style parts with or without brackets. Refer to the Slim Line table of parts for further details on ratings and links to specifications.
  • Enclosed External-Mounted Slim Line LED Lighting Transformer shown assembled outside a junction box

    No need to assemble this transformer inside a fixture housing!  Easily mounted on the outside through a simple standard 1/2" NPT electrical knock-out in a junction box or through an approx. 5/8" hole in any other enclosure. Secured on the inside of the enclosure by a standard 1/2" NPT metal conduit fitting locknut (provided).   (Model 210041EB shown).

    Fully UL Listed for Canada and the US. 480V to 240V; 347V to 240V and 347V to 120V step-down voltages. Configuration available in power ratings from 25 to 240VA (see model table on...

  • OPTIONAL MOUNTING BRACKETS for Slim Line Transformers

    Plated Steel Mounting Brackets are available for our "Slim Line" LED lighting open-type step-down transformers that a user can easily install themselves. The brackets simply slip over the core at either end and "contain" the transformer when the brackets are fastened-down to the lighting fixture by screws.  Save significant cost by simply installing them yourself or alternatively, they can be shipped PRE-INSTALLED from Electronic Craftsmen for a nominal  additional cost.  Click on the part number in the...

Powerful Solutions That Work - with guaranteed results!  

Get a Quote!

Open Internal-Mount "Component" Models
Model
(click for Datasheet)
Input V Output V Nominal Power VA Load Reg (typ) Eff (typ) Length (inches) Width (inches) Height (inches) Weight (lbs)
210041 / 210041M 347 240 50 6.5% 94% 1.85 1.63 1.31 0.6
210042 / 210042M 347 240 100 4.0% 93% 3.35 1.63 1.31 1.3
210043 / 210043M 347 240 240 4.0% 93% 6.38 1.63 1.31 2.8
210100 / 210100M 347 120 25 11.5% 84% 1.85 1.63 1.31 0.6
210097 / 210097M 347 120 60 9.0% 86% 3.35 1.63 1.31 1.3
210098 / 210098M 347 120 125 7.3% 88% 6.38 1.63 1.31 2.8
211063 / 211063M 480 240 35 11% 83% 1.85 1.63 1.31 0.6
210099 / 210099M 480 240 75 7.5% 93% 3.35 1.63 1.31 1.3
210083 / 210083M 480 240 170 6.0% 90% 6.38 1.63 1.31 2.8
212024 / 212024M 277 240 125 2.0% 97% 1.85 1.63 1.31 0.6
212025 / 212025M 277 240 240 1.3% 97% 3.35 1.63 1.31 1.3

Suffix "M" - parts are ordered pre-assembled with Mounting brackets.  Note that mounting brackets are available as sold separately for easy user installation and reduced cost.

Models 212024 and 212025 are available as special order only.

Enclosed External-Mount Models, suitable for IP65 applications
Model
(click for Datasheet)
Input V Output V Nominal Power VA Load Reg (typ) Eff (typ) Length (inches) Width (inches) Height (inches) Weight (lbs)
210041EB / 210041FB 347 240 50 6.5% 94% 2.07 1.91 1.57² 0.8
210042EB / 210042FB 347 240 100 4.0% 93% 3.56 1.91 1.57² 1.6
210043EB / 210043FB 347 240 220 4.0% 93% 7.72 1.87 1.49 3.0
210100EB / 210100FB 347 120 25 11.5% 84% 2.07 1.91 1.57² 0.8
210097EB / 210097FB 347 120 60 9.0% 86% 3.56 1.91 1.57² 1.6
210098EB / 210098FB 347 120 115 7.3% 88% 7.72 1.87 1.49 3.0
211063EB / 211063FB 480 240 35 11% 83% 2.07 1.91 1.57² 0.8
210099EB / 210099FB 480 240 75 7.5% 93% 3.56 1.91 1.57² 1.6
210083EB / 210083FB 480 240 155 6.0% 90% 7.72 1.87 1.49 3.0
212024EB / 212024FB 277 240 125 2.0% 97% 2.07 1.91 1.57² 0.8
212025EB / 212025FB 277 240 240 1.3% 97% 3.56 1.91 1.57² 1.6

1.  Model version FB includes internal 110°C resettable fuse.

2.  For these Enclosed models:  Height - add Mounting Nipple dimensions – approx. 0.47" threads above 0.13" shoulder, outside dia. 0.82" (1/2" NPT)

3.  Models 212024 and 212025 are available as special order only.