The SRX3K security gateway devices contains one main power supply and second (redundant power source) placed behind the device chassis in the respective slots. Each power source will be able to provide electricity to all the different components in the Juniper SRX3K. In presence of two power sources simultaneously, they divide the power equally between both. The two power supplies provide full redundancy. In case of failure of one of the power source, the redundant power supply takes over and continues to distribute the power equally among the different components. The service gateway resends the power required to support its configuration and problems if the available power is not sufficient. Description: Juniper SRX3K-PWR-AC-C AC Power Supply for SRX3000 SRX3400 SRX3600 Features: AC Power Entry Module (PEM) for SRX 3000, No Power Cord Compatibility: Juniper SRX3000, SRX3400, SRX3600 Services Gateways Power Capacity : 1200 Watt Input Voltage : AC 100-240 V, 50/60 Hz, 12.0 A (max) Model Number : SRX3K-PWR-AC Part Number : SRX3K-PWR-AC