The Littelfuse Inc. PolySwitch® RGEF400K-AP is a PTC Resettable Fuse electronic component that is part of the circuit protection category.

• Component Category: Circuit Protection
• Fuse Type: PTC Resettable
• Type: Polymeric
• Package: Cut Tape (CT), Tape & Box (TB)
• Height - Seated (Max): 0.504" (12.80mm)
• Lead Spacing: 0.199" (5.05mm)
• Voltage - Max: 16V
• Current - Max: 100 A
• Current - Hold (Ih) (Max): 4 A
• Current - Trip (It): 6.8 A
• Time to Trip: 1.7 s
• Mounting Type: Through Hole
• Package/Case: Radial, Disc
• Temperature Range - Operating: -40°C to 85°C
• Dimension: 0.331" L x 0.098" W (8.40mm x 2.50mm)
• Resistance - Initial (Ri) (Min): 21 mOhms
• Resistance - Post Trip (R1) (Max): 60 mOhms
• Approval Agency: CSA, TUV, UL