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. Range is complete with four frame sizes: XT1, XT2 up to 160A and XT3, XT4 up to 250A.
Accurate, proactive, self-organized, team-oriented, with strong communication skills and always ON duty.
With rated current up to 6,300A and short-circuit current up to 120kA.
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For applications in accordance to IEC 60947-2 Standard
For applications in accordance to UL 489 and CSA C22.2 Standard
The most common application for moulded case circuit breakers is power distribution. SACE Tmax XT can fit the needs with a complete range of solutions.
SACE Tmax XT1 and XT3 are designed to answer the most common requirements of installations. Frequently used in residential and commercial application, they are available in the fixed and plug-in versions with TMD thermomagnetic trip units.
SACE Tmax XT2 and XT4 meet requirements for more advanced applications. A wider range of trip units is able to support a better customization of the protection functions. TMA thermomagnetic trip units with adjustable thresholds for overload and short circuit protection are a good option for DC applications. New Ekip electronic trip units take care of any AC application:
During the last years, the growing attention to the environmental issues together with new policies of cost reduction, which involve not only capital costs but also operational costs, has led to a wider diffusion of the energy measurements practice down to the lower distribution levels.
Aim of this tendency is to get to an optimal load management and to identify possible system inefficiencies. Examples of these loads can be machinery, any subparts of an industrial plant, the various modules that compose a data center as well as the different consumptions of a conditioning system in a mall. The possibility to measure, transmit and store data about each load is fundamental.
Ekip E-LSIG trip unit for Tmax XT4 has been designed to protect loads ranging from 16A to 250A with operating voltages up to 690V against overloads, shot circuits, ground faults, over and undervoltages.
At the same time, without the need of any external module or sensor and without increasing the installation dimensions, Ekip E-LSIG can provide measurements of the main electrical quantities. Current (class 1), voltage (±0,5%), power and energy (class 2) as well as power factor, frequency and THD are data that can be retrieved from the trip unit. By means of Ekip COM module for MODBUS communication, it is easy to send measurement and additional data to a supervision system.
Motor protection is one of the most common application for moulded case circuit breakers in low voltage installations.
Safety and reliability of solution are important aspects that must be considered when choosing and manufacturing a system for starting and monitoring motors. Start-up is a particularly critical phase for the motor itself and for the installation powering it. When it comes to direct starting, ABB SACE proposes two different solutions:
Use of generators is no longer occasional and limited to short periods, but it has become continuous and no more subject to long stoppage periods. For this purpose, it is indispensable to guarantee adequate protection of the electric plant.
Protection against overload: circuit breaker must be selected and set so that it trips before temperatures damaging insulating materials are reached. Product standards stipulate that, for a specified time, the generator must be able to carry a given current higher than the rated current. It is very common that prescriptions for generator protection are included in shipping registers, which is why SACE Tmax XT trip units’ curves have been designed to comply with them.
Protection against short-circuit: the short-circuit current of a generator decreases over time and its initial value is about 3 - 5 times the rated current of the generator itself. To detect a fault within a suitable time and disconnect the generator, it is necessary to select circuit-breakers with low magnetic trip thresholds or circuit-breakers fitted with electronic trip units with adjustable threshold. With the new series of SACE Tmax XT circuit breakers, ABB widens its range of solutions for generator protection:
SACE Tmax XT circuit breakers and accessories are designed, manufactured and tested in conformity with:
ABB SACE Quality System conforms to following Standards:
ABB SACE Quality System obtained first certification with RINA certification body in 1990.
Attention to protection of the environment is a priority for ABB SACE. Confirmation of this is an Environmental Management System certified by RINA in conformity with the International ISO14001 Standard. In 1999 the Environmental Management System was integrated with the Occupational Health and Safety Management System according to the OHSAS 18001 Standard and later, in 2005, with the SA 8000 (Social Accountability 8000) Standard, committing itself to respect of business ethics and working conditions.
ISO 14001, 18001 and SA8000 recognitions together with ISO 9001 made it possible to obtain RINA Best Four Certification.
Supervision and control software for electronic trip units.
Supervision software for devices connected to a communication network.
To explore the interface of ABB trip units, make a configuration, display the signals and conduct an operating simulation.
Moulded Case Circuit Breakers family
Main distribution switchboards up to 6300A
Miniature Circuit Breakers family
For motor starting and power switching
Optical arc guard monitoring system
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