ABB RC223 Residual current release

- Brand: ABB
- Model: RC223 4p
- Type: Residual current release for circuit breaker T3N 250 series)
- All Tech Specs:
  - Material: Thermoplastic or polycarbonate housing for insulation and durability
  - Poles: 4 (fixed four-pole configuration)
  - Rated Current: 250A (compatible with T4 250 circuit breaker)
  - Sensitivity Threshold: 30mA, 300mA, 3000mA (selectable for residual current detection)
  - Type: B (sensitivity to AC, pulsating DC, and smooth DC residual currents; complies with IEC/EN 60947-2)
  - Frequency Sensitivity: Selectable maximum threshold (400 Hz, 700 Hz, 1000 Hz) for adaptation to industrial fault frequencies
  - Voltage: 400V AC (nominal operating voltage)
  - Mounting: Fixed or plug-in version for Tmax T4 four-pole circuit breaker
  - Response Time: Instantaneous trip for residual faults above threshold
  - Protection: Residual current protection against indirect contacts and additional protection against direct contacts
  - Standards: IEC/EN 60947-2; suitable for industrial plants with variable fault frequencies
  - Certification: CE marked; RoHS compliant
  - Features: Combines with Tmax T4 for enhanced safety; no external power required; adaptable to different industrial requirements
- Dimension: Approximately 70 mm width x 140 mm height x 100 mm depth (based on T4 series compatibility)
- Weight: 0.5-0.7 kg (approximate for RC release unit)
- Country of Origin: Italy 
- HS Code: 8536.20 (automatic circuit breakers)