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Circuit Breaker Trip Units

The following sections describe low voltage insulated case

(ICCB), molded case (MCCB) circuit breakers, and Type RL

circuit breakers with Static Trip III™ available for use with the

ACCESS system.

ICCB Siemens Sentron® ICCB circuit breakers are available in ratings

from 800 to 5000 amps and are designed to supply high short

time withstand and high interrupting ratings. Two types of

interchangeable trip units are available for use with the ICCB

and ACCESS system; the basic type TL trip unit and the high

performance System Breaker Energy Communicating trip unit

(SB-EC). Both trip units use a microprocessor to execute the

numerous functions programmed in the unit.

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Siemens DTU3005-B Spezifikationen Seite 68