Hello,
Yes, SRX also has redundant interface feature but it is present only in SRX chassis cluster as reth interfaces where one interface from each node bundle together and form a reth interface. One they bundle the interface which is from the active node is active and the other interface from the second node is passive and takes over if anything goes wrong on the active interface.
On a standalone SRX there is no Active/ Passive interface bundle like redundant interface but SRX does have an aggregate interface which will load balance the traffic on both the interfaces and both the interfaces will be active.
Hope This Helps 
Thanks,
Pulkit Bhandari
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