1SVR740885R4300 ABB Control Industrial Automation Components

ABB 1SVR740885R4300 is a multifunctional monitoring relay designed for both single-phase and 3-phase applications. It features phase failure detection, phase sequence monitoring, automatic phase sequence correction, interrupted neutral monitoring, and ON-delay/OFF-delay trip timers. The relay has DPDT (Double Pole Double Throw) contacts, which are configurable as 2 x 1C/O or 1 x 2C/O. The housing is rated IP50, and the terminals are rated IP20. It has a communication protocol width of 85.6 mm, a net height of 4 kV, and a rated impulse voltage (Uimp) of 22.5 mm. The relay is equipped with overvoltage, undervoltage, and phase unbalance detection poles, and offers protection functions up to 600 V with a rated insulation voltage (Ui) of 103.7 mm. It operates with a control voltage (AC) on a DIN rail and has a UPC code for 230Vac at 4 VA. The relay supports both flexible and rigid wires, with specifications for normally closed (NC) auxiliary contacts accommodating 2 x 0.5-1.5mm2 or 2 x 20-16AWG. It operates at a wavelength of 50/60/400 Hz, with a number of circuits rated for (AC) 280 V and a supply voltage ensuring 100,000 operations. The rated voltage (AC) for phase-to-phase connections is 280 V. This product, which uses a silver-nickel alloy (Ag/Ni) and is cadmium-free (Cd-free), is designed for 30,000,000 operations with a frame current rating at (230Vac) 0.005 A. The tripping curve ranges from 0.1-30 s, with a trip unit type of spring and type of terminals specified for a wide temperature range from -25°C to +60°C. The control circuit rated current is (230Vac, AC-12) 4 A and (230Vac, AC-15) 3 A for AC, with (24Vdc, DC-12) 4 A and (24Vdc, DC-13) 2 A for DC. It features a short circuit current breaking capacity (Icn), protection settings, a processing time, a measurement function, an operating rate of (L-N) 180-280Vac, and is designed for an operating rate conducive to efficient processing.