Siemens sirius System Manual page 89

3RV1 circuit breaker
2.5.2 Connection
Tools
Conductor cross-sec-
tions
Screw-type terminals
Soldering pin connec-
tor
2-46
You require the following to connect the circuit breakers:
• Frame sizes S00 to S2: Pozidriv 2 screwdriver
• Frame size S3: Allen key (4 mm)
The typical SIRIUS conductor cross-sections apply (see Section 1.5.2 "Con-
ductor cross-sections").
3RV1 circuit breakers with frame sizes S00 and S0 have terminals with cap-
tive screws and terminal washers that enable you to connect 2 conductors,
even if they have different cross-sections.
The box terminals of the circuit breakers of frame sizes S2 and S3 can also
take 2 conductors with different cross-sections. With the exception of circuit
breakers of frame size S3, which have terminal screws with a 4 mm Allen
screw, all the terminal screws can be tightened using a standard screwdriver
or a Pozidriv screwdriver (size 2).
You can remove the box terminals from circuit breakers with a frame size of
S3 to connect conductors with lugs or connecting bars. A terminal cover is
available as shock protection and to ensure that you comply with the
required creepages and clearances when the box terminals are removed.
Circuit breakers in frame size S00 can be soldered onto printed circuit
boards by means of a soldering pin connector. A soldering pin connector is
available for the main contacts and the transverse auxiliary switch.
SIRIUS System Manual
GWA 4NEB 430 0999-02b