Product Overview
ABB SACE Tmax is a range of molded case circuit breakers and switch-disconnectors designed for special low-voltage applications requiring high breaking capacity, compact dimensions, flexible configurations, and advanced protection.
The range covers demanding electrical systems with operating voltages starting from 1000 V DC or 800 V AC, including photovoltaic systems, high-voltage AC distribution, DC networks, motor applications, and industrial power systems.
SACE Tmax products are available for both IEC and UL standard applications. The range includes dedicated solutions for:
· DC applications up to 1000 V DC
· Photovoltaic and high-voltage DC applications up to 1500 V DC
· AC applications up to 800 V AC
· AC applications up to 1150 V AC
· Switch-disconnector applications
· Motor protection applications
With advanced trip units, multiple execution versions, and a comprehensive accessory portfolio, SACE Tmax provides a reliable and flexible solution for special electrical installations.
Product Features
Special Application Coverage
SACE Tmax is designed for applications requiring higher voltage ratings than standard molded case circuit breakers.
The range supports:
· DC systems up to 1000 V DC
· PV and DC systems up to 1500 V DC
· AC systems up to 800 V AC
· AC systems up to 1150 V AC
· IEC and UL compliant installations
High Breaking Capacity in Compact Size
The Tmax range provides high short-circuit breaking capacities while maintaining compact molded case dimensions.
Key performance highlights include:
· Up to 50 kA at 1000 V DC
· Up to 25 kA at 1500 V DC
· Up to 50 kA at 800 V AC
· Up to 20 kA at 1000 V AC
· Up to 12 kA at 1150 V AC
Strong Construction and Safety
The range integrates construction features designed to improve operator safety and installation reliability.
Key safety features include:
· Double insulation
· Positive operation
· Isolation behavior
· Segregated accessory seats from power circuits
· Tropicalization for hot-humid climates
· Anti-corrosion treatments
· Glass-fiber reinforced synthetic resins
Flexible Installation Versions
SACE Tmax products are available in several installation executions.
Available versions include:
· Fixed version
· Plug-in version for T4 and T5
· Withdrawable version for T4, T5, T6 and T7
These solutions allow simplified maintenance, rapid replacement, and safe isolation.
Wide Range of Protection Trip Units
The range supports both thermomagnetic and electronic protection trip units.
Available trip units include:
· TMD
· TMA
· TMF
· PR221DS
· PR222DS/P
· PR222DS/PD
· Ekip M-LRIU
Protection can be configured for distribution, short-circuit protection, earth fault protection, motor protection, and communication-enabled applications.
DC and Photovoltaic Application Support
Dedicated versions are available for photovoltaic and high-voltage DC networks.
Key features include:
· Dedicated DC circuit breakers
· PV switch-disconnectors
· UL 489B solutions for North American PV applications
· Connection jumpers for DC pole series configurations
· Support for 2+2PS, 3PS and 4PS arrangements
Complete Accessory Portfolio
SACE Tmax supports a broad range of accessories for connection, control, signaling, operation, and safety.
Accessory categories include:
· Power terminals
· Service releases
· Motor operators
· Auxiliary contacts
· Communication modules
· Rotary handles
· Terminal covers
· Phase separators
· Plug-in and withdrawable kits
Main Functions
DC Circuit Protection
SACE Tmax molded case circuit breakers protect high-voltage DC networks against overloads and short-circuits.
Typical DC applications include:
· Photovoltaic plants
· Battery systems
· Industrial DC distribution
· Renewable energy installations
· High-voltage DC circuits
AC Circuit Protection
The range also supports high-voltage AC distribution networks up to 1150 V AC.
Typical AC applications include:
· Industrial distribution systems
· High-voltage low-voltage networks
· Special power supply systems
· Auxiliary distribution systems
Switch-Disconnection
SACE Tmax switch-disconnectors are used for disconnection, isolation, and switching functions in both AC and DC systems.
Available ranges include:
· T4D/PV to T7D/PV up to 1100 V DC
· T4D/PV-E to T7D/PV-E up to 1500 V DC
· AC switch-disconnector versions for special applications
Thermomagnetic Protection
Thermomagnetic trip units provide overload and short-circuit protection for AC and DC networks.
Available types include:
· TMD: fixed thermal and magnetic thresholds
· TMA: adjustable thermal and magnetic thresholds
· TMF: fixed thresholds for selected PV-E versions
TMA trip units provide:
· Adjustable thermal threshold: 0.7 to 1 x In
· Adjustable magnetic threshold: 5 to 10 x In
Electronic Protection
Electronic trip units provide enhanced protection and, in selected versions, communication capabilities.
Available electronic trip units include:
· PR221DS: L and S/I protection
· PR222DS/P: L, S, I and G protection
· PR222DS/PD: L, S, I and G protection with integrated Modbus RTU communication
Protection functions include:
· L overload protection
· S short-circuit protection
· I instantaneous short-circuit protection
· G earth fault protection
Motor Protection
The Ekip M-LRIU trip unit provides integrated protection for three-phase asynchronous motors.
Functions include:
· L overload protection
· R locked rotor protection
· I short-circuit protection
· U phase unbalance or phase loss protection
· G earth fault protection
· PTC sensor input
· Contactor control through PR212/CI module
· Modbus communication via system bus
Remote Opening and Closing
Service releases and motor operators enable remote control of the circuit breaker.
Available functions include:
· Shunt opening release
· Undervoltage release
· Shunt closing release for T7 motorizable versions
· Stored energy motor operators
· Spring charging motor for T7
Communication
Selected electronic trip units support communication functions.
Communication options include:
· Integrated Modbus RTU with PR222DS/PD
· Modbus via system bus with Ekip M-LRIU
· Ekip T&P configuration and test support
Key Specifications
|
Item |
Specification |
| DC voltage range | Up to 1000 V DC / 1500 V DC |
| AC voltage range | Up to 800 V AC / 1150 V AC |
| Rated current range | Up to 1600 A |
| DC breaking capacity | Up to 50 kA at 1000 V DC; up to 25 kA at 1500 V DC |
| AC breaking capacity | Up to 50 kA at 800 V AC; up to 20 kA at 1000 V AC; up to 12 kA at 1150 V AC |
| Standards | IEC 60947-2, IEC 60947-3, UL 489B |
| Trip units | TMD, TMA, TMF, PR221DS, PR222DS, Ekip M-LRIU |
| Installation versions | Fixed, plug-in, withdrawable |
| Operating temperature | -25°C to +70°C |
