3RV1 circuit breakers
SIRIUS System Manual
2-32
GWA 4NEB 430 0999-02b
2.4.7 Housings and mounting accessories
Molded-plastic housings (IP 55) are available if you want to install circuit
breakers as single units. All the housings are equipped with neutral and
ground terminals. Above and below are two openings that can be knocked
out for cable glands. On the back of the housing there are 2 precut open-
ings. All the cable bushings have metric dimensions. The surface casings
can be sealed. There is space in the housing on the rail for additional modu-
lar terminal blocks.
Widths
The widths of the housing depend on whether auxiliary releases are used:
• 54 mm: circuit breaker + lateral auxiliary switch
• 72, 82 mm: circuit breaker + lateral auxiliary switch + auxiliary release
Mounting the
surface casing
Figure 2-19: Molded-plastic surface casing (frame size S00)
Model
Molded-plastic
...
Width Frame size
Housing with actuator membrane for toggle switch Surface casing 54 mm, 72 mm S00
Bay 72 mm S00
Lockable housing with rotary switch Surface casing 54 mm, 72 mm
82 mm
S0
S2
Bay 72 mm S0
Lockable housing with emergency stop rotary switch (red/
yellow)
Surface casing 54 mm, 72 mm
82 mm
S0
S2
Bay 72 mm S0
Table 2-12: Housings for circuit breakers
3
4
1
2
Neutral/ground terminals
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