Contactors
All electric motors have a lifespan, and to keep them running efficiently and safely they must be protected. One of the main causes of failure is electrical overload, sometimes called overcurrent. When a motor draws more current than it is designed to handle it causes the temperature to build-up resulting in overheating. This damages motor windings and coils. It is important to protect the motor and its circuit, and this is where the use of contactor overload relays can help.RS Components offer an extensive range of high-quality contactor overload relays from leading industry brands including Schneider Electric, Siemens, ABB, Eaton, Lovato, and Rockwell Automation.What is overload protection?Overload is where a motor draws a high current above its rated value for an extended amount of time. Overload causes overheating of the motor causing damage. To prevent this from happening devices such as contactor relays are specifically designed for industrial control motor protection. They are used with contactors as part of a motor starter or in a control panel or centre.What are the different types of contactor overload relays?The motor protection devices can be classified into two main types which are thermal types and electronic types.Thermal overload relaysUtilise a bi-metallic plate located near a heating element. When excessive current is passed through the heating element N/C (Normally Closed) contacts switch over and opens contacts. This interrupts power from flowing to the contactor’s control circuit. Thermal overloads usually offer an adjustable current range as well as a manual or automatic reset option.Electronic RelaysElectronic overload relays don’t have a bi-metallic mechanism, Instead, they work by using components such as temperature sensors to measure the load current. They are generally more accurate than thermal devices and they usually have a wider current range, a selectable trip class provides enhanced trip protection against single phasing against the motor.
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Schneider Electric TeSys K LC2K 3 Pole Reversing Reversing Contactor - 6 A, 24 V ac Coil, 3NO, 3 kW
VND1,903,916.00 -
Eaton xStart DILM 3 Pole Contactor - 12 A, 110 V ac Coil, 3NO, 5.5 kW
VND1,919,436.00 -
Eaton Overload Relay - 1NO + 1NC, 1 → 1.6 A F.L.C, 1.6 A Contact Rating, 6 W, 500 Vac
VND1,919,630.00 -
Schneider Electric Control Relay - 2NO + 2NC, 10 A Contact Rating, TeSys
VND1,922,152.00 -
Siemens Sirius Classic Contactor Terminal Cover for use with S12, Size S10
VND1,925,838.00 -
Schneider Electric TeSys D LC1D 4 Pole Load Control Contactor - 25 A, 24 V dc Coil, 4NO, 2.4 W
VND1,926,420.00 -
Schneider Electric Overload Relay - 1NO + 1NC, 2.5 → 4 A F.L.C, 4 A Contact Rating, 3P, TeSys
VND1,934,762.00 -
Schneider Electric Thermal Overload Relay - 1NO + 1NC, 30 → 38 A F.L.C, 38 A Contact Rating, 3P, TeSys
VND1,942,716.00 -
Schneider Electric TeSys D LC1D 3 Pole Motor Control Contactor - 25 A, 230 V ac Coil, 3NO, 11 kW
VND1,945,044.00 -
Schneider Electric TeSys Contactor - 10 A, 220 V ac Coil, 3NO + 2NC
VND1,949,118.00 -
-42.00%
Schneider Electric TeSys D LC1D 4 Pole Contactor - 25 A, 24 V ac Coil, 2NO + 2NC
VND3,269,094.00VND1,954,550.00 -
Eaton Contactor Relay - 4NO, 4 A Contact Rating, xStart
VND1,963,668.00 -
Schneider Electric Acti 9 iCT 2 Pole Contactor - 16 A, 230 V ac Coil, 2NO
VND1,964,638.00 -
ABB AF Range AF09 3 Pole Contactor - 25 A, 230 V ac Coil, 3NO, 4 kW
VND1,981,904.00 -
Siemens Control Relay - 2NO + 2NC, 10 A Contact Rating, 24 Vdc, 4P, SIRIUS Innovation
VND2,007,124.00 -
Siemens Contactor Relay - 2NO + 2NC, 10 A Contact Rating, 4 W, 110 Vdc, 4P, SIRIUS Innovation
VND2,007,124.00 -
Eaton xStart DILEM 4 Pole Contactor - 9 A, 24 V dc Coil, 4NO, 4 kW
VND2,021,674.00 -
Siemens SIRIUS Innovation 3RT2 3 Pole Contactor - 7 A, 24 V ac Coil, 3NO, 3 kW
VND2,021,868.00 -
Schneider Electric Control Relay - 2NO + 2NC, 10 A Contact Rating, 24 Vdc, TeSys K
VND2,040,104.00 -
Schneider Electric TeSys K LP4K 3 Pole Contactor - 20 A, 24 V dc Coil, 3NO, 5.5 kW
VND2,044,178.00 -
Siemens SIRIUS Innovation 3RT2 3 Pole Contactor - 7 A, 110 V ac Coil, 3NO, 3 kW
VND2,065,712.00 -
Schneider Electric TeSys D LC1D 3 Pole Contactor - 9 A, 230 V ac Coil, 3NO, 4 kW
VND2,069,204.00 -
Schneider Electric TeSys K LP1K 4 Pole Contactor - 20 A, 24 V dc Coil, 4NO
VND2,072,308.00 -
Schneider Electric TeSys D LC1D 4 Pole Contactor - 25 A, 230 V ac Coil, 4NO
VND2,078,904.00