ABB's groundbreaking SACE® Tmax® XT molded case circuit breakers can help simplify your most complex application up to 1200 A, maximizing ease of use, integration and connectivity.
With Ekip Touch trip units, you may install communication modules inside the breaker, saving space in your panel. Also, as internal communication modules, ABB offers 7 different protocols: Ethernet IP, Hub (Module to connect your breaker to the cloud), IEC61850, Modbus RTU, Modbus TCP, Profinet and Link (ABB proprietary protocol), virtually eliminating the need for converter boxes.
Zone Selectivity as quick and simple as connecting one cable between two breakers? It is possible, thanks to innovative Tmax XT trip units.
This function allows multiple circuit breakers belonging to the same installation to be connected together, in order to coordinate the trip units and to reduce the tripping times in the case of protections S, G, S2 and I. Thus, in the event of a failure:
• the circuit breaker closest to the fault trips
• the other circuit breakers are locked for a programmable amount of time
Each circuit breaker that detects a fault reports it to the circuit breaker upstream. The circuit breaker that detects the fault but does not receive any communication from those downstream opens without waiting for the set delay to elapse. It is possible to enable zone selectivity if a fixed-time curve has been selected and the auxiliary supply is present.
This animation shows this feature in a Tmax XT2-XT4, but this option can be found also with Tmax XT5.
Installation instructions – Ekip COM RS-485 Modules:
Tmax XT2-XT4:
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Tmax XT5:
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Installation instructions – Zone Selectivity:
Tmax XT2-XT4:
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Tmax XT5:
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