Overview
The ABB 1SDA074642R1 is a SACE Tmax XT1 molded case circuit breaker engineered for reliable power distribution in industrial and commercial settings. With a 125A frame size, 60A rated current, and thermal-magnetic fixed (TMF) trip unit, this breaker provides both thermal overload and magnetic short-circuit protection. ABB 1SDA074642R1 delivers an interrupt rating of 25 kA at 480 Vac, making it suitable for medium-duty industrial applications requiring dependable overcurrent coordination.
Key Features
- 125A frame size with 60A rated current capacity
- Thermal-magnetic fixed trip unit for overload and short-circuit protection
- 25 kA interrupt rating at 480 Vac (50 kA at 240 Vac, 18 kA at 600Y/347 Vac)
- Rated voltage: 600Y/347 Vac (480 Vac Delta) and 500 Vdc
- Three-pole (3P) configuration with ring-lug or bar connections
- Fixed or plug-in versions available for flexible installation
Technical Specifications
- Frame Size: XT1, 125A
- Rated Current: 60A
- Poles: 3 (three-phase)
- Voltage Rating (AC): 600Y/347 Vac (480 Vac Delta)
- Voltage Rating (DC): 500 Vdc
- Trip Unit: Thermal-Magnetic (TMF) fixed, non-adjustable
- Interrupt Rating: 25 kA @ 480 Vac, 50 kA @ 240 Vac, 18 kA @ 600Y/347 Vac
- Impulse Voltage (Uimp): 8 kV
- Connection Type: Ring-lug or bar connections
- Mounting: Fixed mount version
- Certifications: UL 489, CSA
- Part Number: 1SDA074642R1
Typical Applications
The ABB 1SDA074642R1 SACE Tmax XT1 is ideal for:
- Industrial motor control centers and distribution panels
- Commercial building electrical systems
- Manufacturing facility power protection and branch circuits
- OEM equipment and machinery protection
- Control cabinet and switchgear integration
- Applications requiring thermal-magnetic coordination without electronic trip adjustment
Compatibility & Replacements
Compatible With
- Industrial three-phase distribution systems rated 480V to 600Y/347V
- Fixed mounting switchgear and electrical enclosures
- Ring-lug and bar-connected bus systems
- ABB SACE Tmax XT modular accessory ecosystem
Replaces / Drop-In Replacement For
- Verify compatibility with your system integrator or facility engineer before ordering, as MCCB replacement requires proper frame and load coordination.
Works With
- ABB Tmax XT accessory modules (undervolage, shunt release, etc.)
- Standard industrial three-phase motor and load circuits
- Thermal-magnetic coordination and time-current protection schemes
- UL 489 and CSA compliant electrical installations
