Kyoritsu loop impedance, PSC, and RCD testers are used by electrical installation engineers and testing professionals to verify the safety and compliance of electrical wiring systems in residential, commercial, and industrial buildings. The KEW 4118A measures loop impedance and prospective short circuit current (PSC) to confirm adequate fault protection, while the KEW 4140 combines loop, PSC, and insulation testing in one instrument. The KEW 5406A and KEW 5410 are dedicated RCD testers that verify the trip time and current of residual current devices to ensure personal protection. All models are IEC-compliant and carry a 3-year warranty. Available from KEW India — India's official Kyoritsu Japan Products.