Specifications General Product Family: MasterPact NW Device Type: Low‑voltage air circuit breaker Model: NW25 H1 Poles: 3‑pole Application: Protection and isolation in electrical distribution Standards Compliance: IEC 60947‑2 Utilisation Category: Category B Control Type: Push‑button manual operation Mounting Mode: Fixed or draw‑out Suitability for Isolation: Yes Electrical Ratings Rated Current (In): 2500 A @ 40 °C Rated Operational Voltage (Ue): Up to 690 V AC, 50/60 Hz Rated Insulation Voltage (Ui): 1000 V AC Rated Impulse Withstand Voltage (Uimp): 12 kV Breaking Capacity Class: H1 Rated Ultimate Short‑Circuit Breaking Capacity (Icu): 65 kA at 220–690 V AC Rated Service Short‑Circuit Breaking Capacity (Ics): 65 kA at 220–690 V AC Rated Short‑Time Withstand Current (Icw): 65 kA @ 1 s Rated Short‑Circuit Making Capacity (Icm): 143 kA peak at 220–690 V AC Network Frequency: 50/60 Hz Mechanical & Operational Control Mechanism: Manual push‑button actuation Operating Durability: Designed for multiple operational cycles Isolation Function: Provides main circuit isolation Mechanical Durability: 10,000 cycles without maintenance Electrical Durability: 6,000 cycles at rated load conditions Environmental Installation Environment: Indoor switchboards and distribution panels Pollution Degree: Industrial standard environments