Siemens SENTRON 3WA1 - Page 293

Accessories
4.5 Accessories for main connections
3WA1 air circuit breaker
Equipment Manual, 02/2023, 92310000002-06
291
Flange connection
The flange connection makes it possible to connect connecting bars to the rear of the
guide frame.
It can be pre-installed at the factory. If it is ordered as an accessory, it can retrofit by the
customer to replace the originally supplied main circuit connection.
Note
The flange connection
cannot be used for:
•
Size 1 with rated current 2500 A
•
Size 2 with rated current 4000 A
•
Size 3 with rated current 5000 A and 6300 A
Front-accessible main connections according to DIN 43673 with double hole
The front-accessible main circuit connections according to DIN 43673 with double hole
make it possible to connect connecting bars to the guide frame.
It is installed on the rear horizontal main circuit connection of the guide frame and can
only be ordered as an accessory for installation by the customer. It is not possible to
have this installed at the factory.
Note
If the front
-accessible main connections are used in withdrawable circuit breakers,
supports for front and DIN connecting bars are required for mounting.
Overview of possible connection methods for withdrawable circuit breakers
3WA1 circuit breakers / non-automatic circuit breakers - size 1
Short-
circuit
breaking
capacity
I
cu
= I
cs
Rated
short-
circuit
breaking
capacity
class
I
n
[A]
Vertical
Horizont
al
Front
Flange
vertical
on top /
horizont
al at the
bottom
horizont
al on top
/ vertical
at the
bottom
flange
on top
/
horizon
tal at
the
bottom
horizon
tal on
top /
flange
at the
bottom
55 kA @
500 V AC
N
630
✓
✓
✓
✓
✓
✓
✓
✓
800
✓
✓
✓
✓
✓
✓
✓
✓
1000
✓
✓
✓
✓
✓
✓
✓
✓
1250
✓
✓
✓
✓
✓
✓
✓
✓
1600
✓
✓
✓
✓
✓
✓
✓
✓
2000
✓
✓
✓
✓
✓
✓
✓
✓
2500
✓
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