Technical Parameters Electrical Ratings Product Type: Molded Case Circuit Breaker (MCCB) Frame Rated Current (Iu): 160 A Number of Poles: 3 Trip Unit Type: Thermal-Magnetic (TMD) Adjustable Thermal Setting Range: 17.5 … 25 A Instantaneous Magnetic Setting (Ii): 300 A Rated Operational Voltage: up to 690 V AC / 500 V DC Rated Insulation Voltage (Ui): 1000 V Rated Impulse Withstand Voltage (Uimp): 8 kV Rated Frequency: 50 / 60 Hz Conventional Free-Air Thermal Current: 160 A Rated Service Short-Circuit Breaking Capacity (Ics): 85 kA at 220-240 V AC 50 kA at 380-415 V AC 36 kA at 500 V AC 25 kA at 525 V AC 12 kA at 690 V AC Rated Ultimate Short-Circuit Breaking Capacity (Icu): Same as Ics for corresponding voltages Short-Circuit Performance Level: S Mechanical & Installation Mounting Type: Fixed Terminal Connection: Front terminals with bolt/lug type connections Recommended Tightening Torque: ~6 N·m Connecting Capacity: Compatible with busbar up to 32.5 … 100 mm² Electrical Durability: ~8000 operations Mechanical Durability: ~25,000 operations Environmental & Physical Operating Temperature: Standard industrial ambient range Standards Compliance: IEC 60947-2 series Compact Size: Typical MCCB form factor for panel and distribution use