1SDA075169R1 ABB XT4N 250 TMA 250 3-Pole MCCB

Why Choose the ABB XT4N 250 TMA 250 1SDA075169R1 Circuit Breaker?

The ABB XT4N 250 TMA 250 1SDA075169R1 is a high-performance 3-pole moulded case circuit breaker (MCCB) designed for reliable protection and switching in industrial and commercial low-voltage electrical distribution systems. As part of the advanced ABB SACE Tmax XT range, it combines a compact XT4 frame with dependable thermal-magnetic protection and robust short-circuit interruption capability.

This circuit breaker incorporates an ABB TMA thermal-magnetic trip unit with a rated current of 250 A. Its instantaneous magnetic protection is adjustable across 1250–2500 A, providing protection against high fault currents while the thermal element provides overload protection for connected circuits and equipment.

With a rated voltage of 600 V, a 3-pole configuration and an interruption rating of 25 kA at 480 V AC, the XT4N 250 is suitable for demanding distribution panels, switchboards, machinery and industrial power systems. Its fixed design with front terminals simplifies integration into electrical assemblies, while its UL certification supports applications designed around North American electrical standards.

Key Advantages

• Compact ABB Tmax XT moulded case circuit breaker for industrial power distribution.
• 250 A rated current for high-capacity feeder and distribution protection.
• TMA thermal-magnetic trip unit provides overload and short-circuit protection.
• 1250–2500 A instantaneous magnetic trip range for adjustable fault protection.
• 3-pole configuration suitable for three-phase electrical systems.
• 25 kA interruption rating at 480 V AC.
• Fixed construction with front terminals for straightforward switchboard integration.
• UL-certified design for compliant low-voltage distribution applications.

Key Features

• ABB SACE Tmax XT series.
• XT4 frame size.
• 250 A rated current.
• 600 V rated voltage.
• 3 poles.
• TMA thermal-magnetic trip unit.
• Instantaneous magnetic protection adjustable from 1250–2500 A.
• Interruption rating classification N, 25 kA at 480 V AC.
• Fixed three-pole construction with front terminals.
• Designed for low-voltage circuit protection, switching and isolation.

Reliable Protection for Low-Voltage Distribution Systems

Moulded case circuit breakers such as the ABB XT4N protect electrical circuits against sustained overloads and high short-circuit currents. The thermal element of the TMA trip unit responds to overload conditions, while its magnetic element provides rapid operation when severe fault currents occur.

The ABB SACE Tmax XT range is designed for compact switchboards and industrial distribution systems where dependable protection, electrical performance and installation flexibility are essential. The XT4 platform is particularly suited to feeder protection, machinery supplies, sub-distribution boards and other demanding low-voltage applications requiring a circuit breaker rated up to 250 A.

Typical Applications

• Industrial low-voltage distribution boards.
• Electrical switchboards and panel assemblies.
• Machinery and production equipment supplies.
• Three-phase feeder circuit protection.
• Commercial and industrial building distribution.
• Motor and equipment feeder protection.
• OEM electrical control and distribution systems.