The Siemens 3RA1423-8XC21-1BB4 is a high-performance contactor combination designed for efficient and reliable motor control in industrial applications. This preassembled star-delta contactor is front-mounted on a time relay, making it ideal for applications requiring reduced starting current and torque. It is rated for AC-3 operations at 11 kW/400 V and features a 3-pole configuration with a size S0 contactor.
Engineered for durability, the 3RA1423-8XC21-1BB4 boasts a robust insulation voltage of 690 V and can operate within a wide ambient temperature range of -25°C to +60°C. The device is equipped with screw-type terminals for secure electrical connections and supports both screw and snap-on mounting onto a 35 mm standard mounting rail, ensuring versatile installation options.
The contactor assembly is designed to meet stringent international standards, holding certifications from CE, UL, CCC, and various marine approvals. It offers a high degree of reliability with mechanical operating cycles of up to 10 million for both main and auxiliary contacts. The unit operates on a 24V DC control supply voltage and includes auxiliary switches for enhanced functionality.
With its compact dimensions of 158 mm in width, 88 mm in height, and 145 mm in depth, the Siemens 3RA1423-8XC21-1BB4 is a space-efficient solution for modern industrial control systems. Its IP20 protection class ensures safe operation in demanding environments, making it a dependable choice for a wide range of motor control applications.