Overview
The ABB SACE Tmax XT2L 125 70A is a moulded case circuit breaker from ABB’s proven Tmax XT family. Tmax XT moulded case circuit breakers guarantee an extremely high performance level while being progressively smaller in size, simple to install and able to provide increasingly better safety. The XT2L variant carries an electronic trip unit rated for the 125A frame, with a nominal current (In) setting of 70A. This breaker is suitable for industrial automation, motor control, and electrical distribution applications requiring reliable overload and short-circuit protection.
Key Features
- Frame Size: 125A, XT2 form factor accommodates multiple rating configurations
- Trip Unit: Electronic (L-type) for precise and repeatable protection
- Current Limiting: XT2H, XT2L, and XT2V breakers have undergone tests per the UL489 Standard and are classified as UL current limiting circuit breakers.
- Single-Phase Capable: XT2 three pole circuit breakers, equipped with thermal-magnetic trip units, can be used in single phase applications. For this purpose, they are marked as follows according to UL standard: Suitable for single phase application up to 347VAC.
- Reverse Feed Rated: Power can be supplied from bottom terminals of the XT2 breaker up to a maximum of 480V.
- High Interrupt Rating: Max interrupt rating of 200 kA at 480 V, 42 kA at 600 V.
Technical Specifications
- Nominal Current Rating (In): 70A
- Frame Size: 125A
- Trip Unit Type: Electronic (XT2L)
- Maximum Voltage (3-Phase): 480V AC
- Maximum Voltage (Single-Phase): 347V AC
- Interrupt Capacity: 200 kA @ 480V, 42 kA @ 600V
- Configuration: Three-pole (3P)
- Reverse Feed Capable: Yes, up to 480V
- Certifications: UL489, UL current limiting
- Product Family: SACE Tmax XT
Typical Applications
The XT2L 125 is widely deployed in:
- Industrial motor control and protection circuits
- Electrical distribution panels and switchboards
- Building automation and HVAC systems
- Manufacturing production lines requiring precision load protection
- Emergency and standby generator installations
- UPS and power conditioning systems
Compatibility & Replacements
This XT2L unit is compatible with other XT2-series electronic trip units and may serve as a replacement for equivalent rated breakers in the Tmax XT line. Accessories and replacement trip units within the Tmax XT family are standardized for quick field service. Parts sourcing and technical documentation are readily available through ABB and authorized distributors. Always verify frame size, voltage rating, and trip unit configuration before replacement to ensure compliance with existing panel designs and electrical codes.
