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  • Ships today when you order by 4 PM Central
  • Genuine OEM parts
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  • Helping fix things since 1938
  • Ships today when you order by 4 PM Central
  • Genuine OEM parts
  • 90-day returns
  • Helping fix things since 1938
Marley, Qmark, BerkoGenuine OEM Part

Marley CDFDS Disconnect Switch

Optional 3-pole, 30 amp power disconnect switch accessory for Marley and Qmark commercial downflow ceiling heaters.

$304.00

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SKU: YCDFDS Categories: , ,

Compatible Models

The Marley CDFDS fits 24 models. Type your model number to check.

Don’t see your model? This list may not include every model this part fits. Call 800-654-3545 or email [email protected] and we’ll check compatibility for you.

Need help finding your model number?

Product Details

Part NumberCDFDS
BrandMarley, Qmark, Berko
Part TypeSwitch
Manufacturer DescriptionDISCONNECT SWITCH
ConditionNew — Genuine OEM
Poles3
Current Rating30 A
Voltage Rating600 V
Phase / Frequency3-phase, 60 Hz
InstallationField-installed, inside heater enclosure
Ship Weight1 lb
Compatible Models24 (see list)
AvailabilityIn stock
ShipsSame business day if ordered by 4 PM Central
Returns90 days on new, unused items
SKUYCDFDS
Not sure this is the right part?Our parts experts will check it against your model number.800-654-3545 · [email protected]Mon–Fri, 8 AM–5 PM Central

About the Marley CDFDS

The CDFDS is the optional power disconnect switch accessory for Marley and Qmark commercial downflow ceiling heaters. It is a 3-pole switch rated 30 amps at up to 600 volts, three-phase, 60 Hz.

Marley lists it as a field-installed accessory, and the heater specification calls for the disconnect switch to sit inside the heater enclosure. It gives a way to cut power to the heater at the unit itself.

Check your heater against the compatible-models list on this page before ordering.

Installation Tips

Turn off power to the heater at the breaker or main disconnect before opening the enclosure. Installation should be done by a qualified electrician following the heater's wiring instructions.

Why Buy From Carroll Parts?

  • Helping Fix Things Since 1938Over 85 years of parts expertise
  • Same-Day ShippingIn-stock orders placed by 4 PM Central ship the same business day
  • 90-Day Return PolicyBuy with confidence
  • Real Parts Experts800-654-3545 · Mon–Fri, 8 AM–5 PM Central

Frequently Asked Questions

Where does the CDFDS mount?

Marley's specification states the disconnect switch is installed within the heater enclosure.

Can it be factory installed instead?

Marley's submittal notes factory installation of the optional controls is available at extra charge when ordering a new heater; this part is the field-installed accessory.

Will the Marley CDFDS fit my heater?

It fits the 24 models listed under Compatible Models on this page. If your model isn’t listed, call us at 800-654-3545 and we’ll check for you.

Is the Marley CDFDS a genuine OEM part?

Yes. This is a genuine Marley factory replacement part, not an aftermarket copy.

When will my order ship?

In-stock orders placed by 4 PM Central ship the same business day.

What is your return policy?

Items must be new and unused. You can return them within 90 days. Please read our return policy before sending anything back. Questions about a return? Call 800-654-3545 or email [email protected], Mon–Fri, 8 AM–5 PM Central.