40A Track Busway system

T40 208V Single-Phase Breakered Outlet Box

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This 208V, 2-pole breakered outlet box supplies single-phase equipment from a compatible 40A USA TrackBusway system. Its local circuit breaker and receptacle provide a protected connection at the point of use.

Place the outlet where the equipment’s own supply cord can reach the run. Allow space to connect and disconnect the plug without interfering with nearby equipment or overhead services.

For 40A Track Busway (40A per feed). T40 identifies the compatible busway system, not this tap-off’s amperage. Select the tap-off’s own current rating, voltage, pole count and protection from its specifications.

Typical T40 system lead time: 3–4 weeks

Planning estimate. Your quote confirms the tap-off shipment schedule.

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Receptacle Type
Phase Connection

Select A and B - Standard for a compatible single-deck system or the two lower-deck phases of a double-deck three-phase 40A system. Select A/C or B/C - Whip on three-phase T40 busway to pair upper-deck phase C with lower-deck phase A or B. On a 208Y/120V supply, both configurations deliver 208V line-to-line through a 2-pole breaker; this branch does not use neutral. Each assembly that uses upper-deck C includes the whip and has a catalog number ending in -WP.

Color: White

Catalogue number MD40-3-208-CB20-OB-ST-W

Regular price $482.79 USD
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Sale price $482.79 USD
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Documents for your selected tap-off

Product family cut sheets and Revit resources. Check that the document or model covers your selected configuration.

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ETL Listed to UL 857 Busway Standards

For 40A Track Busway system models and configurations covered by the listing.

See T40 208V Single-Phase Breakered Outlet Box in Action

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T40 208V Single-Phase Breakered Outlet Box Wiring Diagrams

Standard Wiring: A and B

The illustrated single-deck connection uses phases A and B from a 208Y/120V supply. The standard version also accesses A and B on the lower deck of a double-deck three-phase 40A system. Both phases feed the 2-pole breaker; this 208V branch does not use neutral.

208V two-pole breakered outlet box illustrated wiring diagram: A and B standard connection on single-deck 40A Track Busway supplied at 208V line-to-line; neutral is not connected to the branch.
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Double-deck whip wiring (B/C example)

The diagram shows the B/C pickup. The same whip option also supports A/C: upper-deck C pairs with either lower-deck phase. Both phase pairs supply 208V line-to-line on a 208Y/120V run and use a two-pole breaker.

208V two-pole breakered outlet box illustrated wiring diagram: B from the lower deck and C from the upper deck through a whip on double-deck 40A Track Busway; neutral is not connected to the branch.
Open full-size wiring diagram

View the original single-deck A–B wiring reference

Part of the 40A Track Busway System

This breakered outlet box provides a receptacle connection at a compatible 40A Track Busway run. Build the supply path with 40A track busway lengths and the appropriate power feed.

Match the selected tap's voltage, phase connection and breaker rating to the supply and equipment. Use the Track Busway system design guide to plan the complete layout.

Planning equipment additions along a busway run

Map current equipment and likely future stations before finalizing tap-off positions. Record which loads will operate together and where machines need service access; an available connection position alone does not establish spare electrical capacity.

Keep a schedule of installed tap-off catalogue numbers and the equipment they serve. When a workstation changes, review its supply and connection needs before reusing an existing assembly.

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