Page 147 - Sace Emax 2 Manual for design engineers

ABB | SACE Emax 2
Mechanical characteristics

1 - E1.2 description

Description of circuit-breaker Emax E1.2 circuit-breakers consist of a structure containing the poles, the operating mechanism and the
auxiliary parts. Each pole, enclosed in a plastic box, consists of a breaking part and a current transformer.
The structure of the breaking part differs between selective or current-limiting circuit-breaker.
The circuit-breaker is available in two types:
• fixed version
• withdrawable
The circuit-breaker in fixed version (see Figure 33) has its own terminals for connection to the power circuit.
The withdrawable circuit breaker consists of a mobile part (see Figure 34 for IEC and Figure 35 for UL) and
of a fixed part (see Figure 36 for IEC and Figure 37 for UL) for connection through its own terminals to the
power circuit.
The coupling between the mobile part and the fixed part is via disconnection contacts mounted on the fixed
part.

Figure 33 Figure 34

Figure 35 Figure 36

Figure 37

145 | © 2020 ABB | 1SDH001330R1002 - ECN000134959 - Rev. A Mechanical characteristics | 1 - E1.2 description