Crabtree 4460 is a 20A double pole 20AX grid switch.
Crabtree 4463 product does not exist, it's an unallocated part number.
Possibly confused with:- Crabtree 4436 is a BS1362 grid fuse unit with 13A fuse. OR Crabtree 4493 is a green grid indicator lamp. OR Crabtree 4553 is a retractive 10A 2W&off 10AX grid switch.
The Rockergrid modular system parts are available in various /suffix style versions.
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