Overview
The Siemens 3RB2483-4AC1 is a 3-pole overload relay rated for a switching current of 630 A, with adjustable trip classes covering CLASS 5, 10, 20 and 30. It is housed in an IP20 enclosure for stand-alone installation and carries a shock rating of 15g / 11 ms.
Applications
The 3RB2483-4AC1 is suited for motor protection in industrial machinery, pumps, fans, compressors, and conveyor systems where a 3-pole, 630 A rated overload relay is required. Its compatibility with contactors of sizes S00 through S12 makes it a flexible choice for panel builders assembling motor starter combinations across a wide power range.
Integration & mounting
The relay is designed for stand-alone installation with dimensions of 45.0 mm width, 113.0 mm height, and 95.0 mm depth, weighing 450.0 g. The auxiliary circuit uses spring-loaded terminals accepting 1x (0.25... 1.5 mm²) or 2x (0.25... 1.5 mm²) finely stranded wire. Finger-safe touch protection is provided for vertical contact from the front, and the auxiliary terminal is removable for easier wiring. A fuse gG: 6 A is required for short-circuit protection of the auxiliary circuit.