Resideo DP3040B5002/U 3 Pole 120 Vac PowerPro Definite Purpose Contactor

Item #: HONE-DP3040B5002/U
Mfr. part #: DP3040B5002/U
UPC: 085267120937

Key specifications

Frequency50 Hz; 60 Hz
Electrical Connectlug connectors
Temperature Rating-4 F to +149 F
SwitchingDPST
Poles3

View all specifications

$43.76

Ships from Seattle, WA
30-day returns on unused items. Details
Secure checkout

Shipping details

Shipping weight: 0.95 lb
Box size: 4 × 3.4 × 2.85 in

Need help with this part?

(404) 678-9908 Chat with a product specialist Request a quote

Brand	Resideo
Manufacturer part #	DP3040B5002/U
Frequency	50 Hz; 60 Hz
Electrical Connections	lug connectors
Application	PowerPro Definite Purpose Contactor
Dimensions	3.1 in. high x 3.62 in. wide x 2.4 in. deep
UL	Component Recognized: File No. 14480, Guide No. NLDX2
CSA	Certified: File No. LR6535
Temperature Ratings (F)	-4 F to +149 F
Switching	DPST
Contact Ratings (AFL)	40 A @ 240/277 Vac, 480 Vac, 600 Vac
Contact Ratings (resistive)	50 A @ 240/277 Vac, 480 Vac, 600 Vac
Poles	3
Contact Connections (coil)	1/4 in. quick-connects and #6 screws
Coil Ratings Voltage	120 Vac
UPC	085267120937

DP3040B5002 has been discontinued by the manufacturer (2025-08). Resideo's PowerPro Deluxe successor with the same ratings is DPL3040B5002 (confirm fit before ordering).

The DP3040B5002 is a definite purpose contactor from Resideo (Honeywell Home), rated 40 amps and built with 3 poles and a 120 Vac coil. It is the switch that lets a low-power control circuit start a compressor, a condenser fan, or an electric heat bank.

A definite purpose contactor is sized for one job rather than for general industrial duty, which is why it costs a fraction of a general purpose starter and still carries the inrush of an air conditioning compressor. The coil pulls the contacts closed when the thermostat or control board calls; when the call drops, spring pressure opens them.

Three poles break all three legs of a three-phase supply. This is the arrangement for commercial condensing units and three-phase electric heat.

The 120 Vac coil is driven from line voltage, which suits equipment where no low-voltage control transformer is present.

The PowerPro line is the heavy-service tier: it is built for the contact wear that comes with frequent cycling on a unit that short-cycles in shoulder season.

Match poles, coil voltage and amp rating to the contactor you are replacing. A contactor with the right coil but too few poles will run the equipment and leave a leg energized at the unit.