1SDA074784R1 ABB XT2S 125 TMA 80-400..800 4-Pole MCCB UL/CSA

Why Choose the ABB XT2S 125 TMA 80-400..800 4p F F UL/CSA?

The ABB XT2S 125 TMA 80-400..800 4p F F UL/CSA, order code 1SDA074784R1, is a four-pole moulded case circuit breaker (MCCB) designed for reliable overload and short-circuit protection in low-voltage power distribution systems. Part of the ABB SACE Tmax XT2 range, it combines a compact 125 A frame with an 80 A TMA adjustable thermomagnetic trip unit.

The TMA thermomagnetic release provides adjustable thermal overload protection together with adjustable magnetic short-circuit protection. This configuration has a rated current of 80 A, with thermal adjustment down to 56 A and a magnetic protection setting adjustable from 400–800 A, allowing the protection characteristics to be matched more closely to the connected circuit.

Configured as a four-pole fixed circuit breaker with front terminals, the 1SDA074784R1 is rated at 600 V and provides an interruption rating of 35 kA at 480 V AC. Its UL-certified configuration and adjustable TMA protection make it well suited to industrial machinery, distribution equipment and OEM electrical panels requiring flexible protection within the compact Tmax XT platform.

Key Advantages

• Compact ABB SACE Tmax XT2S moulded case circuit breaker for low-voltage distribution.
• 80 A rated current within the XT2 125 A frame.
• TMA adjustable thermomagnetic release for flexible overload and short-circuit protection.
• Thermal overload adjustment range of 56–80 A.
• Adjustable magnetic protection range of 400–800 A.
• 35 kA interruption rating at 480 V AC.
• Four-pole fixed construction with front terminals for straightforward panel integration.
• UL/CSA configuration for applicable North American electrical equipment applications.

Key Features

• ABB SACE Tmax XT2S 125 MCCB.
• 80 A rated current.
• 125 A frame size.
• 4-pole configuration.
• TMA adjustable thermomagnetic trip unit.
• Adjustable thermal overload protection.
• Adjustable magnetic short-circuit protection.
• 56–80 A thermal adjustment range.
• 400–800 A magnetic protection range.
• S interruption-performance class.
• 35 kA interruption rating at 480 V AC.
• Rated voltage of 600 V.
• Fixed mounting with front terminals.
• UL-certified configuration.

Adjustable Thermomagnetic Protection for Low-Voltage Distribution

TMA thermomagnetic moulded case circuit breakers combine thermal overload protection with magnetic short-circuit protection while providing adjustment of the protection thresholds. The adjustable thermal element allows the overload setting to be matched to the protected circuit, while the adjustable magnetic element enables the instantaneous response to be coordinated with expected operating and fault currents.

The ABB XT2S 125 1SDA074784R1 combines this adjustable protection with the compact Tmax XT2 platform. Its 80 A rated current, 56–80 A thermal adjustment range, 400–800 A magnetic adjustment range and 35 kA interruption rating at 480 V AC make it a flexible solution for feeders, machinery supplies and four-pole distribution circuits requiring dependable protection.

Typical Applications

• Industrial low-voltage power distribution systems.
• Commercial switchboards and distribution panels.
• Four-pole feeder and branch-circuit protection.
• Machinery and industrial automation power supplies.
• Circuits requiring adjustable overload and short-circuit protection.
• OEM electrical equipment for applicable North American markets.
• Control panels requiring UL-configured circuit protection.