These are ten 10D471K metal oxide varistors (MOV) for surge protection. Each disk is rated with a nominal varistor voltage of 471 (approximately 470 V) and a tolerance of ±10% (K). The 10D designation indicates a 10 mm disk size, with radial leaded configuration suitable for throughhole mounting and PCB protection circuits. Key benefits Protects sensitive electronic circuits from voltage transients and surges by clamping excess voltage and diverting surge current away from components. Compact 10 mm disk form factor enables easy integration into power supplies, adapters, and protection networks. Reliable MOV performance in a standard 470 V class, widely used for mains surge protection in a variety of devices. Pack of 10 pieces provides convenient stock for projects, repairs, or bulk assemblies. Key attributes Type: Metal Oxide Varistor (MOV) Model: 10D471K Nominal varistor voltage: 471 V (approximately 470 V) Tolerance: ±10% (K) Size: 10 mm diameter disk (10D series) Lead configuration: Radial leads for throughhole mounting Material: ZnObased ceramic varistor Pack quantity: 10 pieces Applications and use cases Mains input protection for power supplies, adapters, and small appliances connected to 230 VAC or similar mains voltage Surge protection in consumer electronics, telecom equipment, and networking devices Protective elements in industrial control panels and equipment facing transient voltage events Handling and installation notes Suitable for throughhole PCB mounting and discrete protection circuits Ensure proper clearance and spacing to handle surge energy and maintain reliability in your design This description reflects the product's model, voltage rating, size, and packaging while presenting clear, practical information on how and where these MOVs are typically used.