C305 – DC bi-directional switching

Innovative DC contactors engineered for rapid megawatt charging — compact, customer-driven and ready for stationary applications

C305

1-pole bi-directional DC NO contactors, max. switching voltage up to 1,500 volts and currents up to 1,500 amps

Handling up to 1,500 amps, the C305 series is a compact high-performance contactor to cover MCS Level 2. With built-in energy-saving features, integrated thermal design, and consistent performance under continuous load, the new C305 contactors reduces operational costs without compromising reliability.

Features

  • No explosion risk:
    Permanent magnetic arc quenching without gas encapsulation to prevent overheating and overpressure at all times
  • Best-in-class performance:
    Silver alloy contact pills with a contact resistance of just μOhm 50 for low power losses and less cooling
  • High protection:
    Breaking capacity up to 10,000 amps for 20 milliseconds without contact welding
  • Low power consumption:
    Integrated economizer for optimal pull-in performance during switch-on and minimizes energy consumption in holding mode
  • V2G ready:
    Fully bidirectional

Applications

Stationary use such as charging stations, energy storage, photo voltaik

Specifications

C305
Type of voltage DC bi-directional / AC, f ≤ 60 Hz
Main contacts, configuration 1 NO
Max. switching voltage U 1,500 V
Rated insulation voltage Ui 1,500 V
Rated impulse withstand voltage Uimp 10 kV
Pollution degree
Overvoltage category
PD2
OV2
Conv. thermal current Ith 1,500 A @ 2x 500 mm2
Pole impedance, typical 50 μΩ
Rtd. short-time withstand current Icw 10,000 A @ 20 ms, L < 50 μH
Aux. contact 1x SPDT, single break, optional
with mirror contact function to IEC 60947-4-1, annex F
Coil
24 V DC / 16 … 32 V DC
PWM module, integrated
Vibration IEC 61373: upon request
Shock IEC 61373: upon request
Mounting orientation horizontal, vertical
Temperature range –40° C … +85° C
Mechanical endurance 200,000 operations

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Planned certifications and approvals

c303--approvals--912x60.png

Related Downloads

Flyer Megawatt Charging

Contactors C305/C805 and C330/C830 – Innovative DC contactors engineered for rapid megawatt charging

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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