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MASTERPACT MT12 H1

The Schneider Electric MasterPact MT12 H1 is a low-voltage air circuit breaker designed for reliable protection and isolation in industrial and commercial power distribution systems. As part of the MasterPact MT range, it provides high breaking capacity, robust performance, and compliance with international standards, ensuring safe operation under normal and fault conditions.

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Technical Specifications General Product Range: MasterPact MT Device Type: Low-voltage air circuit breaker (ACB) Model: MT12 H1 Application: Power distribution protection and isolation Standards: IEC 60947-2 Selectivity Category: Category B Suitability for Isolation: Yes Electrical Characteristics Rated Current (In): 1250 A 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): Up to 42 kA @ 690 V AC Rated Service Short-Circuit Breaking Capacity (Ics): 100% of Icu Rated Short-Circuit Making Capacity (Icm): Up to 88 kA (peak) Mechanical & Installation Number of Poles: 3P / 4P Mounting Type: Fixed or drawout Operating Mechanism: Manual push-button operation Mechanical Endurance: High mechanical durability for frequent operations Environmental Frequency: 50/60 Hz Installation Environment: Indoor switchboards and distribution panels Pollution Degree: According to IEC standards