CH1030 – Contactor up to 3,000 V for rail

Single-pole NO contactor for AC and DC (unidirectional). Rated insulation voltage 3,000 V; conventional thermal current 120 A.

CH1030 Contactor up to 3 kV with attached electric arc chamber.

The AC and DC contactor CH1030 is designed for a nominal switching capacity of 70 kW. It is used for the activation of power supply systems and as a main and auxiliary contactor of heating registers in heating and air-conditioning systems. The guiding bars on the fixed contacts force the electric arc into the arcing chamber during shutdown.


Unidirectional switching of up to 3,000  V  DC

The permanent magnets drive the electric arc into the attached electric arc chamber. In addition, the contactors are able to switch currents of up to 60 Hz.

Switchgear in rail carriages
  • Activation contactor of power supply systems
  • Main and auxiliary contactor of heat registers in heating and air-conditioning systems
Auxiliary contacts: Snap-action switch with positive opening operation

The CH1030 series boasts two S800-series snap-action switches. These report the state of the main contacts reliably to the higher-level control system.

Ambient temperatures: –50°C to +70°C

Due to their approval for rail applications, the contactors can also be used in extreme temperatures.


Type of voltageDC, AC
Main contacts, configuration1 x NO
Nominal voltage Un3 kV DC/AC
Rated insulation voltage Ui5 kV
Rated impulse withstand voltage Uimp25 kV
Test voltage at 50 Hz for 10 s12.5 kV
Conv. thermal current Ith120 A
Rated switching capacity atU = 3,000 V DC30 A L/R = 1 ms
Rated switching capacity atU = 3,000 V AC 50 Hz30 A cos φ = 1.0
Rated switching capacity atU = 1,500 V AC 50 Hz50 A cos φ = 1.0
Switching cycles per hour(under rated load)30/h
Max. breaking capacity atU = 4,000 V DC80 A L/R = 0 ms
Max. breaking capacity atU = 4,000 V AC 50 Hz130 A cos φ = 1.0
Maximum making capacity (resistive load)250 A
Dynamic limiting current1,200 A
Aux. contact2 x SPDT
Coil voltage Us24, 110, 120 V DC
Coil tolerance–30% ... +25%
IP rating (IEC 60529)IP00
Mechanical endurance1 million operating cycles
Temperature range–50 °C ... +70 °C
Weightapprox. 5,000
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Related Downloads

Catalogue F170
CH715, CH815, CH500, CH800, CH801, CH1030 - 1 pole HV contactors for voltages up to 3 kV DC/AC
Safety instructions contactors
AFS / C100 / C110B / C130 / C137 / C152...C159 / C160 / C162 / C163 / C164 / C165 / C193 / C195 / C294 / C295 / C160 / C3xx / C8xx / C400 / C600 / CA / CF / CH / CL / CP / CPP / CS / CT / CU / S100/80 / S132 / S134 / S135 / S005 / S007 / S008 / S306 / S307 / S310
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