U.S. Ground
Parcel Shipments
See Shipping Policy

Definite Purpose Contactors

Definite purpose contactors are specialized electrical devices used with specific applications, like HVAC equipment and refrigeration systems. They aren't general-purpose contactors, and they're not used in applications where reliable inrush current handling and frequent cycling performance are less critical. Compared to contactors with a general purpose, definite purpose contactors come in smaller packages, cost less, and are engineered with greater compatibility for use with compressors and heating/cooling systems.

These purpose-made definite contactors have quick connect terminals, and they have secure pressure-plate connections for easy wiring. They are made in multiple poles, in different contact configurations; and they're available in several coil voltages to fit specific needs. They have mechanical durability. They switch electrical loads efficiently, including shunt loads, and do it without compromising either performance or reliability.

Found 2197 items
Filters
Found 2197 items
Manufacturer
Eaton (2099)
Schneider Electric (98)
Component
Definite Purpose Contactor (7)
Hoist Contactor (8)
NEMA Contactor (2182)
Sub Component
Definite Purpose Contactor (2019)
NEMA Non-Reversing Contactor (20)
NEMA Reversing Contactor (128)
Space Saving Contactor (15)
Starter Reversing Capability
Non-Reversing (1955)
Reversing (127)
Starter Voltage
1 Phase (18)
3 Phase (34)
Starter Coil Voltage
110 VAC (471)
110-120 VAC (2)
12 VAC (97)
12 VDC (73)
120 VAC (488)
120 VDC (64)
208 VAC (358)
208-240 VAC (18)
220 VAC (22)
224 VAC (1)
Starter Amperage
120 Amp (17)
135 Amp (4)
15 Amp (109)
162 Amp (1)
165 Amp (1)
167 Amp (1)
177 Amp (1)
18 Amp (4)
20 Amp (14)
200 Amp (13)
Starter HP
0.33 HP @ 115 VAC (5)
1 HP @ 115 VAC (4)
1 HP @ 115 VAC 1 Phase (5)
1 HP @ 230 VAC (5)
1.5 HP @ 230 VAC 1 Phase (2)
1.5 HP @ 240 VAC (5)
10 HP (1)
10 HP @ 208 VAC (5)
10 HP @ 230 VAC 1 Phase (18)
10 HP @ 230 VAC 3 Phase (38)
Starter Frequency
50 Hz (1730)
50/60 Hz (57)
60 Hz (1779)
Starter Auxiliary Contacts
1 NC (72)
1 NO (113)
1 NO + 1 NC (144)
2 NC (54)
2 NO (61)
2 NO + 2 NC (2)
2 NO + 2 NO (8)
3 NO (38)
4 NO (10)
Starter Class
C25 (1936)
Freedom (3)
Starter Enclosure Type
NEMA 1 (155)
NEMA 12 (1)
Open (10)
Open W/ DIN Rail Mounting Adapter (203)
Open W/ Metal Mounting Plate (1649)
Open With Metal Mounting Plate (17)
Starter Model
DP (15)
DPA (65)
Starter NEMA Size
0 (13)
00 (8)
1 (8)
1C (3)
2 (10)
3 (8)
4 (6)
5 (7)
6 (2)
Starter Poles
Single Pole (48)
Two Pole (1333)
Three Pole (1571)
Four Pole (39)
Normally In Stock
Schneider Electric 8910DP12V02Y248 Magnetic Contactors for HVAC Applications
Free U.S Ground shipping
$72.16
$60.13
Normally In Stock
Eaton C25DNF315A - Definite Purpose Contactor 15 Amp 277 Max Volt
Free U.S Ground shipping
$275.12
$229.27
Normally In Stock
Schneider Electric 8910DP32V02 Magnetic Contactors for HVAC
Free U.S Ground shipping
$98.82
$82.35
Normally In Stock
Schneider Electric 8910DPA62V02 Magnetic Contactors for HVAC Applications
Free U.S Ground shipping
$332.11
$276.76
Normally In Stock
Schneider Electric 8910DPA63V14 Magnetic Contactors for Heating Systems
Free U.S Ground shipping
$346.44
$288.70
Normally In Stock
Schneider Electric 8910DPA33V02 Magnetic Contactors for Heating Applications
Free U.S Ground shipping
$134.70
$112.25
Normally In Stock
Schneider Electric 8910DPA43V09 Magnetic Contactors for HVAC Applications
Free U.S Ground shipping
$157.88
$131.57
Normally In Stock
Schneider Electric 8910DPA52V09 Definite Purpose Magnetic Contactors
Free U.S Ground shipping
$294.34
$245.28
Normally In Stock
Eaton C25DRD225A-GL - Definite Purpose Contactor 40 Amp 120 Max Volt
Free U.S Ground shipping
$217.57
$181.31
Normally In Stock
Eaton C25DNY113B - Definite Purpose Contactor 240 Max Volt
Free U.S Ground shipping
$219.31
$182.76
Normally In Stock
Eaton C25DNY177B - Definite Purpose Contactor 177 Amp 240 Max Volt
Free U.S Ground shipping
$279.32
$232.77
Normally In Stock
Schneider Electric 8910DPA33V06 Magnetic Contactors for HVAC Applications
Free U.S Ground shipping
$134.70
$112.25
Normally In Stock
Schneider Electric 8910DPA42V14 Magnetic Contactors for HVAC
Free U.S Ground shipping
$141.85
$118.21
Normally In Stock
Eaton C25DNE330C-GL - Definite Purpose Contactor 30 Amp 480 Max Volt
Free U.S Ground shipping
$524.28
$436.90
Normally In Stock
Eaton C25ANB125A - Definite Purpose Contactor 25 Amp 120 Max Volt
Free U.S Ground shipping
$150.20
$125.17
Normally In Stock
Eaton C25ANB125T - Definite Purpose Contactor 25 Amp 277 Max Volt
Free U.S Ground shipping
$150.20
$125.17
Normally In Stock
Eaton C25ANB140T - Definite Purpose Contactor 40 Amp 277 Max Volt
Free U.S Ground shipping
$217.57
$181.31
Normally In Stock
Eaton C25ANB125C - Definite Purpose Contactor 25 Amp 240 Max Volt
Free U.S Ground shipping
$103.87
$86.56
Normally In Stock
Eaton C25ANB140H - Definite Purpose Contactor 40 Amp 240 Max Volt
Free U.S Ground shipping
$217.57
$181.31
Normally In Stock
Eaton C25ANF140H - Definite Purpose Contactor 40 Amp 240 Max Volt
Free U.S Ground shipping
$235.81
$196.51
Normally In Stock
Eaton C25CNB125T - Definite Purpose Contactor 25 Amp 240 Max Volt
Free U.S Ground shipping
$158.62
$132.18
Normally In Stock
Eaton C25CNB130C - Definite Purpose Contactor 30 Amp 240 Max Volt
Free U.S Ground shipping
$132.65
$110.54
Normally In Stock
Eaton C25CNB140T - Definite Purpose Contactor 40 Amp 240 Max Volt
Free U.S Ground shipping
$235.81
$196.51
Normally In Stock
Eaton C25CNB130T - Definite Purpose Contactor 30 Amp 277 Max Volt
Free U.S Ground shipping
$185.28
$154.40
Normally In Stock
Eaton C25ANB125H - Definite Purpose Contactor 25 Amp 480 Max Volt
Free U.S Ground shipping
$150.20
$125.17
Normally In Stock
Eaton C25CNB130H - Definite Purpose Contactor 30 Amp 480 Max Volt
Free U.S Ground shipping
$185.28
$154.40
Normally In Stock
Eaton C25DNA215H-GL - Definite Purpose Contactor 15 Amp 600 Max Volt
Free U.S Ground shipping
$203.53
$169.61
Normally In Stock
Eaton C25DNA225H-GL - Definite Purpose Contactor 25 Amp 600 Max Volt
Free U.S Ground shipping
$233.00
$194.17
Normally In Stock
Eaton C25DNA230H-GL - Definite Purpose Contactor 30 Amp 600 Max Volt
Free U.S Ground shipping
$256.87
$214.06
Normally In Stock
Eaton C25DNA240D-GL - Definite Purpose Contactor 40 Amp 600 Max Volt
Free U.S Ground shipping
$303.20
$252.67
Normally In Stock
Eaton C25DNA250D-GL - Definite Purpose Contactor 50 Amp 600 Max Volt
Free U.S Ground shipping
$536.17
$446.81
Normally In Stock
Eaton C25DNA350D-GL - Definite Purpose Contactor 50 Amp 600 Max Volt
Free U.S Ground shipping
$583.91
$486.59
Normally In Stock
Eaton C25DNC340D-GL - Definite Purpose Contactor 40 Amp 600 Max Volt
Free U.S Ground shipping
$348.08
$290.07
Normally In Stock
Eaton C25DNB2401W-GL - Definite Purpose Contactor 40 Amp 120 Max Volt
Free U.S Ground shipping
$435.14
$362.62
Normally In Stock
Eaton C25DND225AA-GL - Definite Purpose Contactor 25 Amp 120 Max Volt
Free U.S Ground shipping
$296.15
$246.79
Normally In Stock
Eaton C25DND230AA-GL - Definite Purpose Contactor 30 Amp 120 Max Volt
Free U.S Ground shipping
$335.47
$279.56
Normally In Stock
Eaton C25DND230AC-GL - Definite Purpose Contactor 30 Amp 120 Max Volt
Free U.S Ground shipping
$360.72
$300.60
Normally In Stock
Eaton C25DND315A-GL - Definite Purpose Contactor 15 Amp 120 Max Volt
Free U.S Ground shipping
$277.93
$231.61
Normally In Stock
Eaton C25DND325A-GL - Definite Purpose Contactor 25 Amp 120 Max Volt
Free U.S Ground shipping
$310.21
$258.51
Normally In Stock
Eaton C25DND330A-GL - Definite Purpose Contactor 30 Amp 120 Max Volt
Free U.S Ground shipping
$321.44
$267.87
Normally In Stock
Eaton C25DNE2401T-GL - Definite Purpose Contactor 40 Amp 120 Max Volt
Free U.S Ground shipping
$463.21
$386.01
Normally In Stock
Eaton C25DNF2251A-GL - Definite Purpose Contactor 25 Amp 120 Max Volt
Free U.S Ground shipping
$400.03
$333.36
Normally In Stock
Eaton C25DNA2251A-GL - Definite Purpose Contactor 25 Amp 120 Max Volt
Free U.S Ground shipping
$371.95
$309.96
Normally In Stock
Eaton C25DNA2301A-GL - Definite Purpose Contactor 30 Amp 120 Max Volt
Free U.S Ground shipping
$393.00
$327.50
Normally In Stock
Eaton C25DNA2401A-GL - Definite Purpose Contactor 40 Amp 120 Max Volt
Free U.S Ground shipping
$435.14
$362.62

More Information about Definite Purpose Contactors

Intended for ongoing operation, DP contactors yield a low-price solution that is acceptable for the industry in need of reliable motor control and electrical switching. Their design mostly governs their efficiency and dependability—that is, effective switching of the contact state within a wide variety of circuits. As a result, one will find these devices in a diverse range of applications, from simple on/off controls to complex reversing circuits. Their installation is straightforward, and they require virtually no maintenance, making them well suited to perform in an industrial capacity.

Are definite purpose contactors UL recognized for use in air conditioning applications?

Yes, definite purpose contactors are UL recognized and designed for air conditioning applications, ensuring reliable switching, motor control, and efficient operation in HVAC systems.

Motor Control Basics

Motor control allows operational control of electrical motors in various environments. 

Motor control circuits provide a safe way to operate electrical motors. Back when motor control circuits were in their infancy, it would have been common to see a simple disconnect switch that would be used to turn on and off a motor. Depending on the size of the motor and how much voltage was required, operating this disconnect would have been dangerous, with a very high possibility of arcing or electrocution. Not to mention that when the disconnect was actuated, the large amount of inrush current would have damaged the motor over time.

In today's motor control circuits, there are a few common pieces of hardware. 

A circuit breaker is used to protect the motor and any hardware downstream. A contactor and an overload relay are connected together and function in tandem to allow for remote and safe operation of the motor. The contactor functions much like a relay, allowing for a smaller electrical circuit to remotely close the motor contacts, starting the motor. The overload relay is designed to protect the motor in the case of a prolonged overcurrent event. These two devices are wired in series, so that if the overload relay detects an overcurrent event, the contactor will open the motor contacts, shutting off power to the motor.

The other two most common types of motor control hardware are a soft starter and a Variable Frequency Drive (VFD). 

Both of these devices function in a similar way to the motor circuit with some added functions. The soft starter is designed to reduce large inrush current to the motor upon startup. This “soft starting” of the motor will prolong its life and allow for safer operation. The VFD performs the soft start functions, but also allows for speed control of the motor. This speed control is critical in many different environments and has made VFDs one of the most common and safe to use motor control circuits today.