C10G20 is an industrial cylindrical fuse link designed for circuit protection in AC electrical systems. It is rated for a nominal current of 20 A at 400 V AC with a 10×38 mm physical form factor and exhibits a power loss of 2.00 W during normal operation. The fuse belongs to the Class gG/gL category, providing general-purpose protection with a breaking capacity of 120 kA at 500 V AC. This fuse link is commonly used in industrial control panels, distribution boards, and machinery protection circuits where reliable overcurrent protection and thermal management are essential. The compact 10×38 mm size allows for space-efficient installation in modular fuse holders and switchgear applications.