Operation; Charging The Stored-Energy Spring - Siemens SENTRON 3WA1 Manual

2.2.4

Operation

2.2.4.1

Charging the stored-energy spring

To be able to close the circuit breaker, the stored energy mechanism must be charged.
Manually charging the stored energy mechanism
F
n
(1)
1. Fully grasp the charging handle.
2. Execute nine strokes evenly and completely to the stop.
Execute the ninth stroke just as far and evenly as the first eight strokes, although the
actuating force will increase (see preceding graphic).
Once the stored energy mechanism has been fully charged, the charging handle can be
moved without resistance.
Automatically charging the stored energy mechanism
As an option, the stored energy mechanism can also be charged automatically with the
spring charging motor. For more information, see Chapter Spring charging motor
(Page 257).
3WA1 air circuit breaker
Equipment Manual, 02/2023, 92310000002-06
Actuating force
Number of strokes
Stored-energy spring is charged
2.2 Circuit breakers and non-automatic circuit breakers
Description
39