3RT2015-2KB42

The 3RT2015-2KB42 belongs to the SIRIUS 3RT2015 series and is specifically designated as a "coupling contactor relay." It is commonly used for small signal output isolation and amplification in PLCs, or as an intermediate contactor for signal conversion, rather than simply driving large loads. Its coil is 24V DC, with an operating voltage range of approximately 0.7 to 1.25 times the rated value. It features a plugged-in surge suppression diode module, allowing for on-site installation and replacement as needed, which differs from models with built-in fixed diodes in terms of maintenance flexibility. The terminals use a spring-loaded design, and the auxiliary contacts are fixed at one set of normally closed (1NC). E-commerce information states that "no additional auxiliary contact sockets can be added," indicating that the number of contacts is fixed and cannot be expanded. The actual net weight is approximately 0.318 kg, and the outer packaging box measures approximately 50 × 73.5 × 77.5 mm. The main circuit specifications remain at the S00 frame level of AC-3 rated 7A, 3kW at 400V.