SIMATIC motor starter, direct start, CLASS 10 trip curve
The Siemens 3RK1301-1JB00-0AA2 is a SIMATIC-brand motor starter in a direct-start design, rated for 24 V DC control supply (20.4 to 28.8 V permissible range) and carrying a CLASS 10 trip class — meaning it clears an overload within 10 seconds at a locked-rotor current, protecting motor windings during a stall without nuisance tripping on normal starting inrush. It supports both PROFINET and PROFIBUS DP fieldbus protocols, so it drops into a Siemens automation network without an extra gateway module. The unit mounts by plugging onto a terminal module, with a footprint of 45 mm wide, 265 mm tall, and 120 mm deep — sized for a standard DIN-rail enclosure bay.
Rated for high-fault industrial panels
Pollution degree 3 at 400 V per IEC 60664 means it's rated for the conductive-dust and humidity environment typical of a non-climate-controlled industrial panel; at 500 V it derates to pollution degree 2.