Overview
The ABB SACE Tmax XT1H 125 is a 3-pole molded case circuit breaker (MCCB) engineered for industrial power distribution and motor control applications. This 35A device operates at rated voltages of 690V AC and 500V DC, with single-pole capability up to 347V AC. The XT1H 125 frame offers thermal-magnetic trip protection, reverse feed capability, and UL/CSA certification for North American installations.
Key Features
- 3-Pole Configuration: Designed for three-phase industrial circuits
- Thermal-Magnetic Trip: Protects against overload and short-circuit faults with precise trip curve control
- Reverse Feed Capable: Allows bidirectional power flow when required by system design
- UL/CSA Certification: Meets North American safety and performance standards
- Extended Operating Handle: 1/4-turn handle with quick-connect mechanism for fast disconnect operations
- Compact Molded Case Design: Reduces panel footprint while maintaining high breaking capacity
Technical Specifications
The XT1H 125 delivers industry-standard breaking capacity and voltage ratings suitable for critical distribution applications. ABB SACE Tmax XT1H 125 breakers are designed to handle thermal-magnetic trip settings with frame ratings up to 125A and breaking capacities that exceed IEC 60947-2 requirements for the 690V class.
Typical Applications
- Industrial motor starters and VFD drive protection
- Main and branch circuit distribution in manufacturing facilities
- HVAC system power switching and emergency disconnect
- Heavy-duty pump and compressor control circuits
- Retrofit and upgrade applications in existing control panels
Compatibility & Replacements
The ABB SACE Tmax XT1H 125 is directly compatible with standard DIN rail and flat-plate mounting surfaces used in industrial control cabinets. The fixed 3-pole terminal configuration (front flat terminals) allows seamless replacement of comparable MCCBs in the same frame class. Reverse feed operation enables use as a main disconnect switch for motor drives and energy management circuits. This unit integrates with ABB’s full Tmax XT accessory ecosystem, including shunt trips, undervoltage releases, and communication modules for networked protection schemes.
