ABB Tmax XT for use with Tmax XT

The ABB 1SDA067258R1 is a high-performance TMA thermomagnetic trip unit specifically designed for the Tmax XT2 series of four-pole moulded case circuit breakers. This sophisticated accessory protects against overloads and short circuits, ensuring the ultimate safety and reliability of electrical distribution networks. Engineered for precision and durability, it offers adjustable thermal and magnetic thresholds, making it a versatile choice for safeguarding complex industrial systems and sensitive commercial electrical infrastructure.

Reasons You Should Use the Product

This ABB TMA 125-1250 XT2 trip unit offers tailored circuit protection through adjustable settings, enhancing system safety. Its seamless integration ensures long-term operational stability.

• Adjustable thermal and magnetic trip thresholds for flexibility.
• Designed specifically for four-pole XT2 circuit breaker frames.
• Reliable protection against sustained overloads and sudden short circuits.

Core Performance Features & Key Uses

This trip unit is utilised to upgrade or maintain Tmax XT2 breakers, providing the "intelligence" needed to detect electrical faults. It is primarily used in power distribution boards to protect cables, motors, and downstream equipment from thermal damage and high-magnitude fault currents.

• Technical Specifications
• Trip Unit Type: TMA (Thermomagnetic)
• Rated Current (In): 125 A
• Magnetic Threshold (Im): 625...1250 A
• Number of Poles: 4P
• Compatibility: ABB SACE Tmax XT2.
• Suitable Environments
• Industrial motor control centres
• Commercial building power distribution
• Renewable energy switchboards
• Data centre electrical protection.

For more information please check the datasheets.