1SVR740784R3300 ABB Control Industrial Automation Components

ABB 1SVR740784R3300 is a control relay designed for phase failure, sequence, and under-/over-voltage monitoring for 3-phase systems with adjustable thresholds. It features phase failure detection, phase sequence monitoring, and ON-delay / OFF-delay trip timers. The relay has DPDT (Double Pole Double Throw) - 2C/O contacts, with a housing speed of IP50 and terminal speed of IP20. The communication protocol measures 85.6 mm, with a net height of 4 kV and a rated impulse voltage (Uimp) of 22.5 mm. It supports overvoltage and undervoltage protection functions with a rated insulation voltage (Ui) of 600 V and a control voltage for DIN rail mounting at (400Vac) 18 VA. The relay accommodates normally closed (NC) auxiliary contacts for both flexible and rigid wires of sizes 2 x 0.5-1.5mm2 or 2 x 20-16AWG. It operates at a wavelength of 50/60 Hz, with a supply voltage for AC at 400 V, and is designed for 100 000 operations. The product's contacts are made from a Silver-Nickel alloy (Ag / Ni) and are cadmium-free (Cd-free), with an analog output of 30 000 000 operations. The frame current rating is (400Vac) 0.025 A, and it features a yellow LED for steady control/supply voltage presence, a green LED for active timer indication, and red LEDs for overvoltage and undervoltage detection. The tripping curve is adjustable from 0.1-30 s, with a spring-type trip unit and terminals designed to operate within a temperature range of -25°C to +60°C. The control circuit rated current is 4 A for AC-12 (230Vac), 3 A for AC-15 (230Vac), and 4 A for DC-12 (24Vdc), with a short circuit current breaking capacity (Icn) for DC-13 at 2 A. The protection settings and measurement functions are optimized for an operating rate at (L-L) 400Vac.