What this AS-i compact starter is and where it fits
The Siemens 3RK1322-0HS02-0AA1 is an AS-i compact direct starter in an IP65-rated enclosure — a self-contained motor start-and-protect package for distributed automation. It's an electromechanical DOL starter with a bimetal overload relay, designed to sit out on the machine frame rather than inside a central panel. The IP65 rating means the housing and all connections withstand washdown environments, so it's suited for food-and-beverage lines, packaging machinery, or any zone where hoses are the cleaning method. Communication is handled via AS-interface (AS-i) protocol onboard, with two integrated inputs for local sensors or pushbuttons. There is no PROFIBUS DP option on this variant — the AS-i bus carries both power and data on a single two-wire flat cable, which simplifies field wiring compared to a multi-conductor control cable run.
Motor ratings and what they mean for fit
The setting range is 0.55…0.8 A, which corresponds to a motor rating of 0.21 kW at 400 V AC-3 duty. AC-3 is the standard category for squirrel-cage induction motors — starting under load, switching off during run. So this starter is sized for a small motor in that power class, typical of a conveyor drive, a small pump, or a fan up to about 0.25 hp. The 50 kA short-circuit breaking capacity (Icu) at 400 V means it can safely interrupt a fault current up to that level without upstream devices needing to clear it first — important for coordination studies in a panel with high available fault current. The starter includes a motor brake output rated 24 V DC / 3 A, which powers an external brake coil on the motor. This is a common requirement for vertical-axis loads or conveyors that need to hold position when power is removed. The main circuit connects via tab terminals — a fast, tooled connection method typical for distributed starters in this class.
Physical integration and mounting
The enclosure measures 270 mm high, 120 mm wide, and 190 mm deep — a compact footprint for a self-contained starter with AS-i interface and brake output. It's designed for machine-mounting, not DIN-rail inside a cabinet; the IP65 housing allows direct attachment to the machine frame or a nearby bracket. The 9-pole motor outgoing feeder and 9-pole power connection are pre-wired or terminated via tab connectors, so field wiring is limited to the AS-i flat cable and the motor cable. Operating temperature range is -25 to +55 °C, which covers most factory-floor environments including cold storage areas. The equipment marking per DIN EN 61346-2 is Q, indicating a motor starter function in the schematic.