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Siemens · 10/2014
Project planning aids
3WL Air Circuit Breakers
3WL air circuit breakers/non-automatic air circuit breakers up to 6300 A (AC), IEC
Size III, up to 6300 A, fixed-mounted version, 3- and 4-pole
Blue lines: 4-pole version
$ Mounting space for removal of the arc chutes
% Arc quenching space, space for electrical auxiliary circuit connections
& Grooves (4 mm wide, 5 mm deep) for supporting phase partitions
in the system
( Auxiliary connector with SIGUT screw terminals
) Auxiliary connector with spring-type connections
* Dimension to inside surface of the closed cabinet door
+ Fixing points for mounting the circuit breaker in the system
/ Terminal face
0 Circuit breaker upper edge, only 1000 V circuit breakers and circuit
breakers with breaking capacity class C
1 Arc quenching space, 1000 V circuit breaker and circuit breaker with
breaking capacity C facing grounded or non-conductive surfaces
2 Space for electrical auxiliary circuit connections
Safety clearances to grounded parts and to live parts,
see page 41.
Standard version
Horizontal connection
Optional connection variants
Front connection (single)
Up to 4000 A
Vertical connection
Up to 6300 A
Vertical connection
Up to 6300 A
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