The INSULATOR-MS-R-18-9S is a 7-contact female (socket) insert designed for VEAM CIR series size 18 circular connectors. It features an arrangement of seven contacts, comprising two size 12 contacts and five size 16 contacts, allowing for mixed power and signal connections. This insert has a Service Rating of 'I', which corresponds to an operating voltage of 250V DC or 200V AC and a test voltage of 1,000V AC RMS. As part of the versatile VEAM CIR series, this insert is intended for use in harsh environments requiring robust and reliable interconnections, such as in transit, military, and industrial equipment.