If you are ever looking for anything DS than NAS should be on your RFQ list.
The following is a Mint DSL-416 we Picked up.
Westinghouse DSL-416 fused power circuit breaker
Amptector I A Model LSG (Or the kit of your choice)
Westinghouse fuses PN: 151D932G10 , D3000
NAS owns thousands of DS breakers, DS parts, DS switchgear and DS switchgear parts www.naswgr.com