Siemens SIRIUS, System Manual, Page: 80 / 425

3RV1 circuit breakers
SIRIUS System Manual
GWA 4NEB 430 0999-02b
2-37
2 3RV1 circuit breakers 2.4.8 Busbar adapter
To enable the circuit breakers to be mounted without using up too much
space, and to ensure that the infeed is economical in terms of both time and
money, the switches are mounted directly onto busbar systems using bus-
bar adapters.
The circuit breakers are snapped onto the adapter and connected at the
input side. This prepared unit is mounted directly onto the busbar systems,
thus both attaching it mechanically and establishing electrical contact.
Busbar systems
The adapters are suitable for the following systems:
Accessories
The following accessories are available for busbar adapters:
• Modules that can be mounted on either side to widen the adapters
• Busbar holder for 3 rails
• Molded-plastic covers for 3 terminals (40 mm system)
• Molded-plastic cover profiles for shock protection
Measurements
The following table lists the dimensions of the busbar adapters and accesso-
ries.
Busbar systems with
center-to-center spacing
For copper busbars in acc. with DIN 46 433
Width Depth
40 mm systems 12 mm and 15 mm 5 mm and 10 mm
60 mm systems 12 mm to 30 mm 5 mm and 10 mm
Table 2-14: Busbar systems
System
Busbar adapter and
accessories
Length Width
For circuit
breakers in frame
size
40 mm Circuit breaker
+ lateral auxiliary switch 121 mm 45 mm
55 mm S00, S0
Circuit breaker
139 mm 55 mm S2
Circuit breaker 182 mm 70 mm
72 mm S3 (up to 400 V)
S3 (up to 690 V)
Side module 139 mm
182 mm 13.5 mm
13.5 mm S2
S3
60 mm Circuit breaker 182 mm 45 mm S00, S0
182 mm 55 mm S2
182 mm 70 mm
72 mm S3 (up to 400 V)
S3 (up to 690 V)
Side module 182 mm 13.5 mm S00 to S3
Table 2-15: Dimensions of the busbar adapters and accessories