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Contactor Auxiliary Contact Blocks

Contactors are electrical devices that are used for switching an electrical circuit on or off. They are considered to be a special type of relay and are most commonly used for controlling electric motors. The basic difference between a relay and a contactor is that the contactor is used in applications with higher current carrying capacity, while a relay is used for lower current applications. Contactors typically feature multiple contacts which are normally open and provide operating power to the load when the contactor coil is energized.

Auxiliary contacts are the contacts in the auxiliary circuits that are operated mechanically and are physically linked to the main contacts. They are activated at the same time as the main contacts, but do not carry as much current. Auxiliary contacts are used for auxiliary functions on a contactor, relay or circuit breaker and are available in normally open, normally closed or changeover. Many protection or control devices have additional auxiliary contacts to enable remote signaling of the main contact switching states.

Found 178 items
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Found 178 items
Manufacturer
ABB (31)
Eaton (56)
Schneider Electric (91)
Component
Auxiliary Contact (69)
Auxiliary Contact Block (89)
Contact Kit (14)
Contact Set (4)
Pneumatic Time Delay Attachment (1)
Short Circuit Contact (1)
Sub Component
GV2 And GV3 Auxiliary Contact Block (10)
Tesys D Auxiliary Contact Block (44)
Tesys GV2 And GV3 Manual Starter Auxiliary Contact Block (3)
Tesys K Auxiliary Contact Block (14)
Tesys K Time Delay Auxiliary Contact Block (2)
Time Delay Auxiliary Contact Block (16)
Starter Actions
Instantaneous (47)
Time Delay (11)
Starter Amperage
0.1 Amp (6)
10 Amp (60)
2 Amp (2)
Starter Auxiliary Contacts
1 C/O (3)
1 NC (2)
1 NO (3)
1 NO + 1 NC (32)
1 NO + 3 NC (3)
1 NO/NC (1)
2 NC (6)
2 NO (13)
2 NO + 2 NC (10)
3 NO + 1 NC (4)
Starter Model
GVAED (1)
LA1 (22)
LADN (24)
Starter NEMA Size
0 (1)
1 (1)
2 (1)
3 (1)
4 (1)
5 (1)
Normally In Stock
Eaton 818D498G06 Auxiliary Contact
Free U.S Ground shipping
$3059.80
$2549.83
Normally In Stock
Eaton 818D498G04 Auxiliary Contact
Free U.S Ground shipping
$1513.22
$1261.02
Normally In Stock
Eaton 3463D94G19 Auxiliary Contact
Free U.S Ground shipping
$604.31
$503.59
Normally In Stock
Eaton 3463D94G18 Auxiliary Contact
Free U.S Ground shipping
$604.31
$503.59
Normally In Stock
Eaton J20 Auxiliary Contact
Free U.S Ground shipping
$472.80
$394.00
Normally In Stock
Eaton J02 Auxiliary Contact
Free U.S Ground shipping
$472.80
$394.00
Normally In Stock
Eaton C325KAL40 Auxiliary Contact
Free U.S Ground shipping
$131.83
$109.86
Normally In Stock
Eaton C320KA4 Auxiliary Contact
Free U.S Ground shipping
$871.13
$725.94
Normally In Stock
Eaton C320KA2 Auxiliary Contact
Free U.S Ground shipping
$871.13
$725.94
Normally In Stock
Eaton EMCF Auxiliary Contact
Free U.S Ground shipping
$1599.95
$1333.29
Normally In Stock
Eaton EMCD Auxiliary Contact
Free U.S Ground shipping
$818.39
$681.99
Normally In Stock
Eaton KT29 Auxiliary Contact
Free U.S Ground shipping
$13.25
$11.04
Normally In Stock
Eaton KT21 Auxiliary Contact
Free U.S Ground shipping
$10.58
$8.82
Normally In Stock
Eaton KL25/60 Auxiliary Contact
Free U.S Ground shipping
$271.75
$226.46
Normally In Stock
Eaton KL25/35K Auxiliary Contact
Free U.S Ground shipping
$164.38
$136.98
Normally In Stock
Eaton K20X10 Auxiliary Contact
Free U.S Ground shipping
$154.32
$128.60
Normally In Stock
Eaton 6-166-6 Auxiliary Contact
Free U.S Ground shipping
$1116.29
$930.24
Normally In Stock
Eaton C320KA8 Auxiliary Contact
Free U.S Ground shipping
$972.36
$810.30
Normally In Stock
Eaton C400GR1 Auxiliary Contact
Free U.S Ground shipping
$982.08
$818.40
Normally In Stock
Eaton C400GK82C Auxiliary Contact
Free U.S Ground shipping
$1127.23
$939.36
Normally In Stock
Eaton C400GK96T Auxiliary Contact
Free U.S Ground shipping
$2667.25
$2222.71
Normally In Stock
Eaton C400GK82T Auxiliary Contact
Free U.S Ground shipping
$1127.23
$939.36
Normally In Stock
Eaton C400GK82L Auxiliary Contact
Free U.S Ground shipping
$1127.23
$939.36
Normally In Stock
Eaton C400GK82E Auxiliary Contact
Free U.S Ground shipping
$1127.23
$939.36
Normally In Stock
Eaton C400GK82D Auxiliary Contact
Free U.S Ground shipping
$1127.23
$939.36
Normally In Stock
Eaton C400GK8 Auxiliary Contact
Free U.S Ground shipping
$383.29
$319.41
Normally In Stock
Eaton C400GK46A Auxiliary Contact
Free U.S Ground shipping
$1458.36
$1215.30
Normally In Stock
Eaton C400GK45A Auxiliary Contact
Free U.S Ground shipping
$1458.36
$1215.30
Normally In Stock
Eaton C400GK44C Auxiliary Contact
Free U.S Ground shipping
$1458.36
$1215.30
Normally In Stock
Eaton C400GK16E Auxiliary Contact
Free U.S Ground shipping
$1814.46
$1512.05
Normally In Stock
Eaton 2147A01G01 Auxiliary Contact
Free U.S Ground shipping
$2979.26
$2482.72
Normally In Stock
Eaton 10-6428-12 Auxiliary Contact
Free U.S Ground shipping
$142.51
$118.76
Normally In Stock
Eaton C320YED24 Auxiliary Contact
Free U.S Ground shipping
$76.20
$63.50
Normally In Stock
Eaton C320KGTY13 Auxiliary Contact
Free U.S Ground shipping
$95.62
$79.68
Normally In Stock
Eaton C320KGT4 Auxiliary Contact
Free U.S Ground shipping
$71.24
$59.37
Normally In Stock
Eaton C320KGT3L Auxiliary Contact
Free U.S Ground shipping
$142.51
$118.76
Normally In Stock
Eaton C320KGT15L Auxiliary Contact
Free U.S Ground shipping
$142.51
$118.76
Normally In Stock
Eaton C320KGT1 Auxiliary Contact
Free U.S Ground shipping
$52.33
$43.61
Normally In Stock
Eaton C320KGSD Auxiliary Contact
Free U.S Ground shipping
$8.98
$7.48
Normally In Stock
Eaton C320KGS1L Auxiliary Contact
Free U.S Ground shipping
$104.64
$87.20
Normally In Stock
Eaton C320KGD5 Auxiliary Contact
Free U.S Ground shipping
$52.33
$43.61
Normally In Stock
Eaton C320KGD3 Auxiliary Contact
Free U.S Ground shipping
$52.33
$43.61
Normally In Stock
Eaton C320KGD2 Auxiliary Contact
Free U.S Ground shipping
$71.24
$59.37
Normally In Stock
Eaton C320KGD11 Auxiliary Contact
Free U.S Ground shipping
$71.24
$59.37
Normally In Stock
Eaton C320KGD10 Auxiliary Contact
Free U.S Ground shipping
$52.33
$43.61
Normally In Stock
Eaton C320KGD1 Auxiliary Contact
Free U.S Ground shipping
$52.33
$43.61
Normally In Stock
Eaton 3463D94G04 Auxiliary Contact
Free U.S Ground shipping
$265.34
$221.12
Normally In Stock
Eaton C320KGY31 Auxiliary Contact
Free U.S Ground shipping
$35.75
$29.79

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.