what is the use of anti pumping in breakers

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Venu... the circuit was used to prevent reclosing a circuit breaker into a fault!

Westinghouse referred to it as an "Electrically Trip-Free" Scheme. Some called it the "X-Y Relay Circuit." Others referred to it as the "Anti-Pumping Scheme!"

When implemented, it prevents breaker "pumping", that is, repeated opening/closing action) if closed into a fault. Automatically tripped once, by protective device action, the breaker remains open. It will not reclose even if the "close" circuit remains energized because the operator fails to release the "close" button or because of switch malfunction.

BTW, the circuit was used on any breaker, high or low voltage, having separate close and trip control circuits.

Let me know if additional detail is required.
Regards, Phil Corso