Description

Schneider Electric MTZ1 12 H1 1250A 3P

The Schneider Electric MTZ1 12 H1 1250A 3-pole circuit breaker is a high-performance air circuit breaker (ACB) designed for advanced power distribution and protection in low-voltage electrical systems up to 690 V AC. As part of the MasterPacT MTZ series, this device combines robust protection capabilities with digital connectivity, making it suitable for industrial facilities, commercial buildings, data centers, infrastructure, and critical power applications where reliability and uptime are essential.

Built with a rated current of 1250 A and H1 breaking capacity (standard short-circuit level), the MTZ1 provides dependable protection against overloads, short circuits, and electrical faults while ensuring selectivity and system coordination. The breaker is available in a drawout configuration, enabling fast maintenance, safer servicing, and reduced downtime. Its category B selectivity ensures time-delayed protection coordination with downstream devices for improved system continuity.

The MTZ1 platform supports MicroLogic electronic trip units (ordered separately depending on configuration), offering advanced protection functions, precision measurement, energy monitoring, and communication capabilities. Integration with digital architectures allows real-time monitoring, predictive maintenance, and improved operational efficiency across electrical networks.

Designed in compliance with international standards (IEC 60947-2), the circuit breaker features a rated insulation voltage of 1000 V, impulse withstand voltage of 12 kV, and operational voltage up to 690 V AC at 50/60 Hz. With an ultimate breaking capacity of approximately 42 kA at 440 V AC (H1 level), it provides reliable protection for medium-duty applications while maintaining compact dimensions within a single frame size platform ranging from 630 A to 1600 A.

The Schneider Electric MTZ1 range also incorporates ergonomic push-button operation, clear status indication, and modular accessories to support various installation requirements. When combined with Schneider Electric EcoStruxure Power architecture, the breaker enables intelligent energy management, enhanced safety, and optimized asset performance throughout its lifecycle.

Overall, the Schneider Electric MTZ1 12 H1 1250A 3P circuit breaker delivers a balance of protection performance, digital innovation, and operational flexibility, making it an ideal solution for modern low-voltage power distribution systems that demand reliability, scalability, and smart connectivity.