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Dc contactors

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Combination of contactors Siemens 3RA23168XB301AH0 Reversing contactor AC Screw connection IP20
Special offer

Combination of contactors Siemens 3RA23168XB301AH0 Reversing contactor AC Screw connection IP20

€43.95 +VAT
PLN 205.56
  • Manufacturer: Siemens
  • Manufacturer Code: 3RA23168XB301AH0
  • EAN: 4011209835658
  • Function: Reversing contactor
  • Voltage type for actuating: AC
  • Type of electrical connection of main circuit: Screw connection
  • Degree of protection (IP): IP20
  • Degree of protection (NEMA): Other
EL
Response time: usually up to 2 days
Combination of contactors Siemens 3RA23188XB301AB0 Reversing contactor AC Screw connection IP20
Special offer

Combination of contactors Siemens 3RA23188XB301AB0 Reversing contactor AC Screw connection IP20

€59.07 +VAT
PLN 276.29
  • Manufacturer: Siemens
  • Manufacturer Code: 3RA23188XB301AB0
  • EAN: 4011209835924
  • Function: Reversing contactor
  • Voltage type for actuating: AC
  • Type of electrical connection of main circuit: Screw connection
  • Degree of protection (IP): IP20
  • Degree of protection (NEMA): Other
EL
Response time: usually up to 2 days
Combination of contactors Siemens 3RA24258XE321BB4 Star-delta contactor DC Screw connection IP20
Special offer

Combination of contactors Siemens 3RA24258XE321BB4 Star-delta contactor DC Screw connection IP20

€271.94 +VAT
PLN 1,271.96
  • Manufacturer: Siemens
  • Manufacturer Code: 3RA24258XE321BB4
  • EAN: 4011209838598
  • Function: Star-delta contactor
  • Voltage type for actuating: DC
  • Type of electrical connection of main circuit: Screw connection
  • Degree of protection (IP): IP20
  • Degree of protection (NEMA): Other
EL
Response time: usually up to 2 days
Combination of contactors Siemens 3RA23168XE301BB4 Reversing contactor DC Screw connection IP20
Special offer

Combination of contactors Siemens 3RA23168XE301BB4 Reversing contactor DC Screw connection IP20

€52.74 +VAT
PLN 246.67
  • Manufacturer: Siemens
  • Manufacturer Code: 3RA23168XE301BB4
  • EAN: 4011209836600
  • Function: Reversing contactor
  • Voltage type for actuating: DC
  • Type of electrical connection of main circuit: Screw connection
  • Degree of protection (IP): IP20
  • Degree of protection (NEMA): Other
EL
Response time: usually up to 2 days
Combination of contactors Siemens 3RA23278XB301AK6 Reversing contactor AC Screw connection IP20
Special offer

Combination of contactors Siemens 3RA23278XB301AK6 Reversing contactor AC Screw connection IP20

€113.91 +VAT
PLN 532.80
  • Manufacturer: Siemens
  • Manufacturer Code: 3RA23278XB301AK6
  • EAN: 4011209836372
  • Function: Reversing contactor
  • Voltage type for actuating: AC
  • Type of electrical connection of main circuit: Screw connection
  • Degree of protection (IP): IP20
  • Degree of protection (NEMA): Other
EL
Response time: usually up to 2 days
Combination of contactors Siemens 3RA24268XE321BB4 Star-delta contactor DC Screw connection IP20
Special offer

Combination of contactors Siemens 3RA24268XE321BB4 Star-delta contactor DC Screw connection IP20

€323.06 +VAT
PLN 1,511.04
  • Manufacturer: Siemens
  • Manufacturer Code: 3RA24268XE321BB4
  • EAN: 4011209838710
  • Function: Star-delta contactor
  • Voltage type for actuating: DC
  • Type of electrical connection of main circuit: Screw connection
  • Degree of protection (IP): IP20
  • Degree of protection (NEMA): Other
EL
Response time: usually up to 2 days
Combination of contactors Siemens 3RA23268XB301AC2 Reversing contactor AC Screw connection IP20
Special offer

Combination of contactors Siemens 3RA23268XB301AC2 Reversing contactor AC Screw connection IP20

€87.54 +VAT
PLN 409.46
  • Manufacturer: Siemens
  • Manufacturer Code: 3RA23268XB301AC2
  • EAN: 4011209836259
  • Function: Reversing contactor
  • Voltage type for actuating: AC
  • Type of electrical connection of main circuit: Screw connection
  • Degree of protection (IP): IP20
  • Degree of protection (NEMA): Other
EL
Response time: usually up to 2 days
Combination of contactors Siemens 3RA24158XF311AP0 Star-delta contactor AC Screw connection IP20
Special offer

Combination of contactors Siemens 3RA24158XF311AP0 Star-delta contactor AC Screw connection IP20

€127.79 +VAT
PLN 597.71
  • Manufacturer: Siemens
  • Manufacturer Code: 3RA24158XF311AP0
  • EAN: 4011209838116
  • Function: Star-delta contactor
  • Voltage type for actuating: AC
  • Type of electrical connection of main circuit: Screw connection
  • Degree of protection (IP): IP20
  • Degree of protection (NEMA): Other
EL
Response time: usually up to 2 days
Combination of contactors Siemens 3RA23278XB301AC2 Reversing contactor AC Screw connection IP20
Special offer

Combination of contactors Siemens 3RA23278XB301AC2 Reversing contactor AC Screw connection IP20

€116.38 +VAT
PLN 544.35
  • Manufacturer: Siemens
  • Manufacturer Code: 3RA23278XB301AC2
  • EAN: 4011209836358
  • Function: Reversing contactor
  • Voltage type for actuating: AC
  • Type of electrical connection of main circuit: Screw connection
  • Degree of protection (IP): IP20
  • Degree of protection (NEMA): Other
EL
Response time: usually up to 2 days
Combination of contactors Siemens 3RA24258XF321BB4 Star-delta contactor DC Screw connection IP20
Special offer

Combination of contactors Siemens 3RA24258XF321BB4 Star-delta contactor DC Screw connection IP20

€237.18 +VAT
PLN 1,109.35
  • Manufacturer: Siemens
  • Manufacturer Code: 3RA24258XF321BB4
  • EAN: 4011209838642
  • Function: Star-delta contactor
  • Voltage type for actuating: DC
  • Type of electrical connection of main circuit: Screw connection
  • Degree of protection (IP): IP20
  • Degree of protection (NEMA): Other
EL
Response time: usually up to 2 days
Combination of contactors Siemens 3RA24268XF321AL2 Star-delta contactor AC Screw connection IP20
Special offer

Combination of contactors Siemens 3RA24268XF321AL2 Star-delta contactor AC Screw connection IP20

€224.91 +VAT
PLN 1,051.96
  • Manufacturer: Siemens
  • Manufacturer Code: 3RA24268XF321AL2
  • EAN: 4011209838758
  • Function: Star-delta contactor
  • Voltage type for actuating: AC
  • Type of electrical connection of main circuit: Screw connection
  • Degree of protection (IP): IP20
  • Degree of protection (NEMA): Other
EL
Response time: usually up to 2 days
Combination of contactors Siemens 3RA23188XB301BW4 Reversing contactor DC Screw connection IP20
Special offer

Combination of contactors Siemens 3RA23188XB301BW4 Reversing contactor DC Screw connection IP20

€86.14 +VAT
PLN 402.90
  • Manufacturer: Siemens
  • Manufacturer Code: 3RA23188XB301BW4
  • EAN: 4011209835986
  • Function: Reversing contactor
  • Voltage type for actuating: DC
  • Type of electrical connection of main circuit: Screw connection
  • Degree of protection (IP): IP20
  • Degree of protection (NEMA): Other
EL
Response time: usually up to 2 days
Combination of contactors Siemens 3RA23248XB301AC2 Reversing contactor AC Screw connection IP20
Special offer

Combination of contactors Siemens 3RA23248XB301AC2 Reversing contactor AC Screw connection IP20

€59.07 +VAT
PLN 276.29
  • Manufacturer: Siemens
  • Manufacturer Code: 3RA23248XB301AC2
  • EAN: 4011209836068
  • Function: Reversing contactor
  • Voltage type for actuating: AC
  • Type of electrical connection of main circuit: Screw connection
  • Degree of protection (IP): IP20
  • Degree of protection (NEMA): Other
EL
Response time: usually up to 2 days
Combination of contactors Siemens 3RA23188XB301AP6 Reversing contactor AC Screw connection IP20
Special offer

Combination of contactors Siemens 3RA23188XB301AP6 Reversing contactor AC Screw connection IP20

€59.07 +VAT
PLN 276.29
  • Manufacturer: Siemens
  • Manufacturer Code: 3RA23188XB301AP6
  • EAN: 4011209912595
  • Function: Reversing contactor
  • Voltage type for actuating: AC
  • Type of electrical connection of main circuit: Screw connection
  • Degree of protection (IP): IP20
  • Degree of protection (NEMA): Other
EL
Response time: usually up to 2 days
Combination of contactors Siemens 3RA23188XB301AK6 Reversing contactor AC Screw connection IP20
Special offer

Combination of contactors Siemens 3RA23188XB301AK6 Reversing contactor AC Screw connection IP20

€59.07 +VAT
PLN 276.29
  • Manufacturer: Siemens
  • Manufacturer Code: 3RA23188XB301AK6
  • EAN: 4011209835955
  • Function: Reversing contactor
  • Voltage type for actuating: AC
  • Type of electrical connection of main circuit: Screw connection
  • Degree of protection (IP): IP20
  • Degree of protection (NEMA): Other
EL
Response time: usually up to 2 days
Combination of contactors Siemens 3RA24158XF311AF0 Star-delta contactor AC Screw connection IP20
Special offer

Combination of contactors Siemens 3RA24158XF311AF0 Star-delta contactor AC Screw connection IP20

€127.79 +VAT
PLN 597.71
  • Manufacturer: Siemens
  • Manufacturer Code: 3RA24158XF311AF0
  • EAN: 4011209838109
  • Function: Star-delta contactor
  • Voltage type for actuating: AC
  • Type of electrical connection of main circuit: Screw connection
  • Degree of protection (IP): IP20
  • Degree of protection (NEMA): Other
EL
Response time: usually up to 2 days
Combination of contactors Siemens 3RA23188XB301AF0 Reversing contactor AC Screw connection IP20
Special offer

Combination of contactors Siemens 3RA23188XB301AF0 Reversing contactor AC Screw connection IP20

€59.07 +VAT
PLN 276.29
  • Manufacturer: Siemens
  • Manufacturer Code: 3RA23188XB301AF0
  • EAN: 4011209835948
  • Function: Reversing contactor
  • Voltage type for actuating: AC
  • Type of electrical connection of main circuit: Screw connection
  • Degree of protection (IP): IP20
  • Degree of protection (NEMA): Other
EL
Response time: usually up to 2 days
Combination of contactors Siemens 3RA24368XF321AL2 Star-delta contactor AC Screw connection IP20
Special offer

Combination of contactors Siemens 3RA24368XF321AL2 Star-delta contactor AC Screw connection IP20

€295.79 +VAT
PLN 1,383.51
  • Manufacturer: Siemens
  • Manufacturer Code: 3RA24368XF321AL2
  • EAN: 4011209921481
  • Function: Star-delta contactor
  • Voltage type for actuating: AC
  • Type of electrical connection of main circuit: Screw connection
  • Degree of protection (IP): IP20
  • Degree of protection (NEMA): Other
EL
Response time: usually up to 2 days
Combination of contactors Siemens 3RA24258XF321AC2 Star-delta contactor AC Screw connection IP20
Special offer

Combination of contactors Siemens 3RA24258XF321AC2 Star-delta contactor AC Screw connection IP20

€183.68 +VAT
PLN 859.11
  • Manufacturer: Siemens
  • Manufacturer Code: 3RA24258XF321AC2
  • EAN: 4011209838611
  • Function: Star-delta contactor
  • Voltage type for actuating: AC
  • Type of electrical connection of main circuit: Screw connection
  • Degree of protection (IP): IP20
  • Degree of protection (NEMA): Other
EL
Response time: usually up to 2 days
Combination of contactors Siemens 3RA23158XB301AP0 Reversing contactor AC Screw connection IP20
Special offer

Combination of contactors Siemens 3RA23158XB301AP0 Reversing contactor AC Screw connection IP20

€41.84 +VAT
PLN 195.67
  • Manufacturer: Siemens
  • Manufacturer Code: 3RA23158XB301AP0
  • EAN: 4011209835542
  • Function: Reversing contactor
  • Voltage type for actuating: AC
  • Type of electrical connection of main circuit: Screw connection
  • Degree of protection (IP): IP20
  • Degree of protection (NEMA): Other
EL
Response time: usually up to 2 days
Combination of contactors Siemens 3RA23268XB301BB4 Reversing contactor DC Screw connection IP20
Special offer

Combination of contactors Siemens 3RA23268XB301BB4 Reversing contactor DC Screw connection IP20

€125.87 +VAT
PLN 588.74
  • Manufacturer: Siemens
  • Manufacturer Code: 3RA23268XB301BB4
  • EAN: 4011209836297
  • Function: Reversing contactor
  • Voltage type for actuating: DC
  • Type of electrical connection of main circuit: Screw connection
  • Degree of protection (IP): IP20
  • Degree of protection (NEMA): Other
EL
Response time: usually up to 2 days
Combination of contactors Siemens 3RA24258XF321AG2 Star-delta contactor AC Screw connection IP20
Special offer

Combination of contactors Siemens 3RA24258XF321AG2 Star-delta contactor AC Screw connection IP20

€183.68 +VAT
PLN 859.11
  • Manufacturer: Siemens
  • Manufacturer Code: 3RA24258XF321AG2
  • EAN: 4011209838628
  • Function: Star-delta contactor
  • Voltage type for actuating: AC
  • Type of electrical connection of main circuit: Screw connection
  • Degree of protection (IP): IP20
  • Degree of protection (NEMA): Other
EL
Response time: usually up to 2 days
Combination of contactors Siemens 3RA23178XB301BB4 Reversing contactor DC Screw connection IP20
Special offer

Combination of contactors Siemens 3RA23178XB301BB4 Reversing contactor DC Screw connection IP20

€55.90 +VAT
PLN 261.45
  • Manufacturer: Siemens
  • Manufacturer Code: 3RA23178XB301BB4
  • EAN: 4011209835832
  • Function: Reversing contactor
  • Voltage type for actuating: DC
  • Type of electrical connection of main circuit: Screw connection
  • Degree of protection (IP): IP20
  • Degree of protection (NEMA): Other
EL
Response time: usually up to 2 days
Combination of contactors Siemens 3RA24358XF321AL2 Star-delta contactor AC Screw connection IP20
Special offer

Combination of contactors Siemens 3RA24358XF321AL2 Star-delta contactor AC Screw connection IP20

€290.33 +VAT
PLN 1,357.98
  • Manufacturer: Siemens
  • Manufacturer Code: 3RA24358XF321AL2
  • EAN: 4011209921405
  • Function: Star-delta contactor
  • Voltage type for actuating: AC
  • Type of electrical connection of main circuit: Screw connection
  • Degree of protection (IP): IP20
  • Degree of protection (NEMA): Other
EL
Response time: usually up to 2 days
Didn't find what you were looking for? We will help you!

dc power contactors

Dc power contactors are used in DC control systems as a disconnect/reconnect device. They are used in high power DC electrical systems. They monitor the value of the current flowing in the system while transmitting it to the actuators. Switching on and off the current occurs when there is a risk of anomalies that may occur in the system and endanger safety.

Characteristics - dc power contactors

Depending on their purpose and operating characteristics, dc power contactors are grouped into five categories. Each corresponds to a different load current rating. The contactors operate power networks in power supply systems, mainly electric motors, resistance furnaces and battery power systems.

  • Category DC1 - corresponds to systems with low inductive loads and resistance furnaces and resistors.

  • Category DC2 - supports shunt motors in the start-up phase, disconnection at rated speed, switching off of rotating motors

  • Category DC3 - connects shunt motor systems in start-up, reversing and pulse cycles. It is used to switch off braked and slowly rotating motors

  • Category DC4 - cooperates with series motors, performs shutdown function at maximum rotational speed

  • Category DC5 - is used for series motors in all phases of operation

The principle of operation of dc power contactors is to close the operating current circuit by means of an electromagnet. The dc power contactors are used in power supply systems for forklift trucks, induction equipment. In normal operation of the contactor, the contact jumpers are closed. When the power supply to the coil is interrupted, the spring-loaded contactor is released. In addition to the main contacts, contactors can be equipped with auxiliary contact systems responsible for blocking the device or indicating the operating status.

Contactor strength

When used as an actuating element, solenoids and electromagnets control the position of the operating contacts. The dc power contactors have a large range of on and off cycles. A mechanical switch can cycle from less than one per day to a thousand or more per hour. This is the case when a dc contactor is used to control the operation of a pulse motor or to perform a countercurrent motor braking function.

The solutions offered by Moeller and Schneider make it possible to replace some working elements. For the TeSys LC1F contactor, it is possible to replace the coil which controls the operating contacts. Auxiliary contacts can also be added to the system. The modular construction allows the configuration of the device to be changed according to needs.

How to choose dc contactors

In each suitability assessment, we select the appropriate dc power contactors. They have built-in protection circuits to prevent fluctuation of supply current. In the most common types of single contactors, the coil supply voltage is 24V DC or 48V DC. The current transferred through the operating contacts is in this case from 1A to 10A. The number of operating contacts is from one to four pairs in the system. When selecting a contactor, determine its amperage and type: 1-phase or 3-phase.

To select a contactor correctly, the current to be drawn by the device must be determined. The rated values should be no less than the specifications for the load. For heavy duty, cyclic, continuous duty applications, the contactor must be oversized. In these places, doubling the current limit value allows the system to remain efficient and reliable for longer.

How to wire a contactor?

Contactors can be used directly on the equipment due to their modular design. Eaton products, both single phase and three phase contactors, can also be mounted on a standard rail. This simplifies the layout and arrangement of the individual components. Screw terminals allow the unit to be safely connected to the correct phase.