Are they fuse protected?

No they are not. The fuse they plug into is in fact protected, so it is not needed for the relays.

Can it be use on a a/c fan relay

Yes , however this kit is not fool proof. You must check the relay configuration prior to using it. This is a great kit just make sure you refer to th relay schematic usually provided on the side of the relay you want to test to ensure the bypass tool you are installing is pinned correctly or you could let the smoke out of the circuits

ASIN	B00AA5IUVQ
Best Sellers Rank	812,527 in Automotive ( See Top 100 in Automotive ) 807 in Automotive Code Readers & Scan Tools
Brand	Innovative Products of America
Brand Name	Innovative Products of America
Country Of Origin	China
Customer Reviews	4.7 out of 5 stars 618 Reviews
Global Trade Identification Number	00893509001377
Included Components	Unit^Instruction Guide
Item Type Name	Automotive Accessories
Item Weight	0.2 Pounds
Manufacturer	IPA
Power Source	Hand Powered
Power source	Hand Powered
UPC	893509001377 600717151837
Unit Count	1.0 Count

IPA - 9038 Diagnostic Scan Tool, Plastic, 6 Pc Black

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