1SVR740794R3300 ABB Control Industrial Automation Components

ABB 1SVR740794R3300 is a control relay designed for monitoring 3-phase systems with functionalities including phase failure detection, phase sequence monitoring, and under-/over-voltage monitoring with adjustable thresholds. It features DPDT (Double Pole Double Throw) contacts, offering 2C/O operation. The housing is rated IP50 for protection, while the terminals are rated IP20. This part has a control voltage of 400Vac consuming 18 VA, supports both flexible and rigid wires ranging from 0.5-1.5mm2 or 20-16AWG, and operates within a frequency of 50/60 Hz. The supply voltage is rated for AC 500 V with a frame current rating of 0.025 A. It includes a yellow LED for control/supply voltage indication, a green LED for timer activity, and red LEDs for overvoltage and undervoltage detection. The tripping curve is adjustable from 0.1-30 seconds, and the terminals are designed for spring-type connections. The control relay operates within a temperature range of -25°C to +60°C, has a control circuit rated current of 4 A at 230Vac for AC-12, 3 A at 230Vac for AC-15, and 4 A at 24Vdc for DC-12, with a short circuit current breaking capacity (Icn) of 2 A at 24Vdc for DC-13. Its measurement function covers a line-to-line operating voltage range of 300-500Vac.