The 662008-RUEF400 is a Polymeric Resettable Fuse circuit protection component from Littelfuse Inc.

• Voltage Rating: 30V
• Maximum Current Rating: 100A
• Hold Current: 4A
• Trip Current: 8A
• Time to Trip: 12.7s
• Operating Temperature Range: -40°C to 85°C
• Initial Resistance: 10 mOhms
• Post-Trip Resistance: 50 mOhms

It belongs to the PolySwitch®, RUEF series and comes in a bag package. The size of this fuse is 0.551" L x 0.118" W (14.00mm x 3.00mm) with a maximum seated height of 0.760" (19.30mm). The fuse is designed for through-hole mounting and comes in a radial, disc package. This PolySwitch® fuse is currently active and has approvals from CQC, CSA, TUV, and UL, making it suitable for a wide range of applications.