Schaltbau C303 1 Pole Bi-Directional DC NO Contactors
Schaltbau C303 1 Pole Bi-Directional DC NO Contactors are compact, high-performance switching devices designed for DC and AC power systems that require reliable bi-directional current interruption. The contactors support operating voltages up to 1500V and continuous currents up to 500A, making them suitable for battery storage, charging infrastructure, inverter systems, and other high-power applications. C303 contactors are available with multiple coil-control options, allowing designers to optimize energy consumption, switching performance, and system integration requirements. Designed for applications with charging and discharging cycles, Schaltbau C303 contactors provide full bi-directional switching capability, enabling reliable operation across a range of applications.
Features
- Bi-directional DC and AC switching capability
- Compact design for high-power applications
- Low contact resistance of approximately 100µΩ to improve efficiency
- Multiple coil-control options, including PWM, high-efficiency drive, and precharge versions
- Permanent magnetic arc extinguishing technology
- Mirror-contact auxiliary switch option compliant with IEC 60947-4-1 Annex F
- Designed for applications with charging and discharging cycles
- Reduced power loss and cooling requirements for lower total system cost
Applications
- Stationary
- Grid stabilization and battery energy storage
- Regenerative systems in industrial plants
- Battery management systems
- Uninterruptible power supplies (UPS)
- Photovoltaics
- e-Mobility
- DC fast charging stations
- Battery test benches for the automotive industry
- Battery management for emission-free drive systems, including in maritime applications
Specifications
- Up to 1500V operating voltage
- Up to 500A continuous current rating
- Up to 350A thermal current for select variants
- Up to 2000A switching capacity
- 5000mA short-circuit withstand capability for 20ms
- +85°C maximum ambient operating temperature rating
- 100µΩ approximately contact resistance
- Up to 1.5MW load interruption capability