Automatic reset current overload protector. Compatible with ATC fuse blocks. Complies with SAE J553 and SAE J1171 for ignition protection. High quality fuse, overheating and overcurrent protection, reusable. Repeated use, more secure. With recovery function, no need to change fuses frequently, better protection of vehicle equipment. Suitable for equipment below 12v-24VDC, such as: car, truck, RV yacht. Specification: Rated Current 30A Reset Type Automatic reset Operating Temperature -40oC (-40oF) to 85oC (185oF) Dimension Length: 19.7 Width: 6.2 Height: 29.5 SAEJ 553; SAEJ 1171 (Ignition Protected); UL1500 Termination 5.2mm wide (ATC Type) Storage Temperature -40oC (-40oF) to 125oC (260oF) Package Includes:(3 Pack) 1 Piece Circuit Breaker Fuse