Honeywell · Delivery Unit Part

Honeywell R847A1028 Switching Relay with Internal Transformer – Dental Compressor and Vacuum Control

OEM #R847A1028 ABC SKUHONEYWELL-R847A1028
Honeywell R847A1028 switching relay in its grey enclosure with line cord and low-voltage lead wires

Photographed in our shop.

Pre-ownedOEMBench tested
$350.00

Price per unit. Shipping calculated at checkout.

In stock - ships in 1-2 business days
One unit only. This is the exact item photographed.
Talk to a technician first 727-388-4223 Not a call center. We service this equipment, so we can tell you whether this is the part before you spend the money.
Ships standard ground, boxed. Dispatched in 1-2 business days.
Free fitment check before you order — call 727-388-4223 with your model and serial number.

Technical detail

Product details & specifications

Honeywell R847A1028 Switching Relay with Internal Transformer

Genuine Honeywell R847A1028 heavy-duty switching relay with an internal transformer, used in dental utility rooms and operatory systems to switch high-current loads such as compressors, vacuum pumps and circulators from a low-voltage control signal. The relay provides DPST switching for a single load, or SPST control of two separate loads where one is line voltage and the other may be line or low voltage. Supplied with the enclosure, mounted relay and transformer assembly, and line cord as shown.

Specifications

  • Manufacturer: Honeywell
  • Model: R847A1028 (Type R47A)
  • Component Type: Heavy-Duty Switching Relay with Internal Transformer
  • Line Voltage: 120V, 60 Hz
  • Switching Action: DPST switching, or SPST control of two separate loads
  • Contact Rating: 10 A full load at 120V (100 A locked rotor); 10 A full load at 240V (50 A locked rotor) — 20 A available with poles connected in parallel
  • Internal Transformer: Included, supplying low-voltage control power
  • Terminals: T1 / T2 low-voltage terminals with line-voltage load terminals
  • Listings: UL and CSA marked
  • Supplied With: Enclosure cover, relay and transformer assembly, line cord (as shown)
  • Compatibility: Direct replacement for Honeywell R847A series switching relays; also a common OEM control in dental compressor, vacuum and water management systems

Condition & Testing

  • Inspected by ABC Dentalworks prior to listing

Parts Policy

All parts are sold as tested and working to specification at the time of shipment. Please verify compatibility with your specific equipment before ordering — once a part is opened or installed, it is final sale. See our full Return, Refund & Warranty Policy for details.

Need Help?

Not sure this relay matches your compressor, vacuum system or dental unit? Call ABC Dentalworks at 727-388-4223 or email sales@abcdentalworks.com — we're happy to help confirm compatibility before you order.

Fits these models

Tell us your machine and we will confirm the fitCall 727-388-4223 or send your model and serial number and we will check this part against the OEM cross-reference before you order. The model number is on the serial plate - under the chair base, or inside the access panel on delivery units and lights.

Talk to a technician

Not a call centre. We service this equipment.

727-388-4223

Send us the number

Model, serial, or a photo of the data plate.

sales@abcdentalworks.com

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