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Transparent Dayton DC speed control unit in NEMA 1 enclosure

Dayton

Dayton 5X412 DC Speed Control 90 VDC 2 A NEMA 1 hvac control

SKU CH-N37Q-1WZ34

Controls DC motor speed from 0 to 90 VDC at 2 A with a 25:1 range in a NEMA 1 enclosure

  • Product colorTransparent
  • Variable motor speed via 25:1 range
  • 0–90 VDC output matches 90 VDC motors
  • 120 VAC input plugs into standard supply
  • NEMA 1 enclosure suits indoor mounting
  • ON/OFF switch provides direct control

Dayton 5X412 DC Speed Control

The Dayton 5X412 is a NEMA 1 enclosed DC speed control built for single-direction motor applications. It accepts a 120V AC supply and delivers a 0 to 90V DC output for motors rated between 1/50 and 1/6 hp. An external ON/OFF switch provides direct manual control. This unit suits technicians and maintenance teams needing straightforward variable-speed operation.

Integration into a control panel

Mount the NEMA 1 enclosure indoors where it is protected from moisture and debris. Wire the 120V AC input to a suitable branch circuit and connect the DC motor leads to the output terminals. The external switch handles start and stop duties, freeing the panel from additional pilot devices. No separate DC supply is required because the controller rectifies the AC line internally.

Thermals noise and power draw

The SCR-based circuit regulates motor voltage without active cooling fans, so acoustic output is negligible in normal use. Heat generated by the power devices dissipates through the metal enclosure during continuous operation. Power draw follows the connected motor load up to the 2 A output rating. The transparent cover allows visual inspection of internal components without opening the housing.

How it compares

Measured against everything we stock in Heating & Cooling Controllers, at today’s prices. Recalculated every night.

Price $211.99
Pricier than about 83% of the 1,762 comparable items (median $45.99).

Specifications

Product
Brand nameDAYTON
Product colorTransparent

Questions about this item

How long can the 90 VDC output run at 2 A before thermal limits cut in?

The unit is rated for continuous operation at 2 A with the NEMA 1 enclosure providing passive cooling.

What is the audible noise level when the control runs all day at full load?

The SCR drive operates silently with no moving parts, so only a faint coil hum may be heard.

Which motor specifications must the buyer already have for this control to work?

A permanent-magnet or shunt-wound DC motor rated for 90 VDC and 1/50 to 1/6 hp is required.

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