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11. Spare parts and accessories
All assembly operations of spare parts/
accessories must be carried out in
accordance with the instructions
enclosed All assembly operations of
spare parts/accessories must be carried
out in accordance with the instructions
enclosed with the spare parts
themselves, by ABB personnel or by
suitably qualified customer personnel
with in-depth knowledge of the
apparatus (IEC 62271-100) and of all the
standards aimed at ensuring that these
interventions are carried out in safe
conditions. If maintenance is carried
out by the customer’s personnel,
responsibility for the interventions
remains with the customer. Before
proceeding with any operation, always
make sure that the circuit-breaker is
open, the closing and opening springs
discharged and not energized (medium
voltage circuit and auxiliary circuits).
When ordering spare parts/accessories for the
circuit-breaker, refer to the ordering codes indicated
in the technical catalog and always state the
following:
• type of circuit-breaker
• rated voltage of circuit-breaker
• rated thermal current of circuit-breaker
• breaking capacity of circuit-breaker
• serial number of circuit-breaker
• rated voltage of any electrical spare parts.
Please contact our Service office to check on
availability and to order spare parts.
11.1. List of spare parts
• Shunt opening release
• Additional shunt opening release
• Spring loading gearmotor with electrical signaling
of springs loaded
• Contact for signaling gearmotor protection
circuit-breaker open/closed
• Contact for signaling closing spring loaded/
discharged
• Transient contact with momentary closing during
circuit-breaker opening.
• Auxiliary contacts of circuit-breaker
• Locking electromagnet on operating mechanism
• Position contact of withdrawable truck
• Connected/isolated signaling contacts
• Door isolating interlock
• Locking electromagnet on withdrawable truck
• Set of six tulip contacts
• Shunt closing releasea
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