Siemens SIRIUS 3RT Manual page 224

Industrial controls, switching devices, contactors / contactor assemblies
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Mounting
7.5 Replacing the vacuum interrupters (sizes S10 and S12)
224
Grip the vacuum interrupters firmly at the top and bottom and pull them out slightly. Insert the
enclosed hook into the opening on the underside of the interrupter so that you can fully remove
it.
Do not bend the flexible cable bands of the interrupters upwards.
Do not clean the contact pieces on the contactor with a sharp object, otherwise the smooth
surface can be damaged.
Slide in the new vacuum interrupters until you hear a definitive click.
Do not bend the interrupters since this could destroy them.
SIRIUS - SIRIUS 3RT Contactors/Contactor assemblies
Manual, 09/2017, A5E03656507120A/RS-AE/006

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