ABB 1SNA645007R0100

The ABB 1SNA645007R0100 is a reliable relay designed for seamless control in various industrial applications. Commonly referred to as the RB 121A, this unit operates efficiently with a power consumption of just 0.46 watts at 115 Vac/Vdc. It features a single-pole double-throw (1 SPDT) contact configuration, handling up to 6 amps and supporting an input voltage rating of 115 Vac/Vdc with an output rating up to 250 Vac.

Built to last, the relay comes housed in a NEMA 1, IP20 enclosure, suitable for operating temperatures ranging from -20 to +70 degrees Celsius. Installation is straightforward with screw clamp connections and a recommended tightening torque between 0.4 and 0.6 N-m. The compact gray device measures approximately 67.5 mm in length, 16 mm in width, and 70 mm in height, fitting neatly into control panels with a 6 mm spacing requirement.

This relay supports both solid and stranded wires sized from 24 to 12 AWG and maintains excellent performance over extensive cycles—up to 100,000 operations under load and 10 million off-load. With a quick bounce time of 1.2 ms and capable of switching low currents as small as 5 V/mA, the relay offers precise control, making it a real champ in automation setups.

Distributed by BSP Automation, the ABB 1SNA645007R0100 combines durability and efficiency, making it a solid pick for professionals who want a no-nonsense relay that gets the job done.