Schaltbau C303 1-Pole Bidirectional DC NO Contactors
Schaltbau C303 1-Pole Bidirectional DC NO Contactors are compact, high-performance switching devices designed for DC and AC power systems requiring reliable bidirectional 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 bidirectional switching capability, enabling reliable operation across a range of applications.
Features
- Bidirectional 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 approximate contact resistance
- Up to 1.5MW load interruption capability