CS115 – 4 pole AC and DC Contactor

Multi-pole unidirectional DC or AC contactor up to 800 V and 30 A of continuous current. Main contacts and optional auxiliary switch in different combinations NC/NO.

CS115 4 pole AC and DC contactor CS115/10 with auxiliary switches.

This multi-pole AC or DC contactor of up to 800 V can switch and carry currents up to 30 A. Different combinations are possible for the 4 main contact pairs: 4 NO, 3 NO/1 NC or 2 NO/2 NC. Optionally, 1 to 4 auxiliary contacts can be pushed on (NC/NO contacts) which report the switch state of the main contacts to different systems.

As a DC contactor, the CS assumes control tasks in battery networks. The AC version can also switch AC voltages. Typical applications are the switching on and off of devices or subsystems, the mutual locking of switch circuits or the activation of power contactors. In a voltage range of up to 800 V DC, it can also function as a pre-charging contactor or discharge contactor.


Permanent-magnetic blowout for high DC power ranges

During switch off, an electric arc is ignited between the opening contacts. The current flows on through the ionised air. Permanent magnets drive the ionised air out of the contact zone into the arcing chamber. Here, the electric arc is extended and cooled until it goes out.

In this contactor, the permanent-magnetic blowout works for all four contact pairs. Depending on the voltage range, the shutdown power is significantly higher than the thermal continuous load.

Main contacts as NO/NC contact

The main contacts of the CS115/10 are available in the following configurations:

  • 4 NO contacts
  • 3 NO contacts/ 1 NC contact
  • 2 NO contacts / 2 NC contacts
1–4 auxiliary switches (NC or NO)

Optionally, one to four auxiliary switches can be pushed on (NO/NC) which report the switch state of the main contacts to different systems. Using the auxiliary switches, locks or safety circuits can be made, for example.

Applications in battery networks up to 800 V DC
  • Industrial trucks
  • Battery-powered transport units
  • Automated Guided Vehicles (AGVs) for intralogistics
  • Rail carriages (tested as per EN 60077-1, EN 60077-2 and EN 61373)
In a voltage range of up to 800 volt DC, the CS can also be used as a pre-charging contactor or discharge contactor.


Type of voltageDC (unidirectional), AC (f ≤ 60Hz)
Main contacts, configuration4 x NO/NC
Nominal voltage Un750 V (max. 800 V @ PD3, 1,500 V @ PD2)
Rated operating voltage Ue800 V @ PD3 1,500 V @ PD2
Rated insulation voltage Ui800 V @ PD3 1,500 V @ PD2
Rated impulse withstand voltage Uimp6 kV @ PD3 8 kV @ PD2
Conv. thermal current Ith20 A @ 2,5 mm² 30 A @ 4 mm² mit Gabelkabelschuh
Aux. contactoptional max. 4 x NO or NC
Ue 8 V min. / 127 V max.
Ie 10 mA min. / 0.5 A max.
Coil voltage Us24, 36, 72, 96, 110 V DC
Coil tolerance-30% ... +25%
Vibration / Shock (IEC 61373)Category 1, Class B
Mounting orientationhorizontal, vertical
Temperature range-40 °C ... +70 °C
Mechanical endurance> 5 million operating cycles
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Related Downloads

Catalogue C50
CS115/10 – 4 pole DC and AC contactors for voltages up to 800 V
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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