What this SIRIUS direct starter packs
The 3RA2115-0HH15-1FB4 is a Siemens SIRIUS direct online starter in size S00, designed specifically for snapping onto 60 mm busbar systems — no DIN rail adapter needed, it clips directly to the busbar profile. The overload release is thermal bimetallic (Class 10 trip class), and the short-circuit trip is magnetic — a coordinated pair that protects the motor branch without nuisance tripping on startup inrush.
Supplied subcomponents — BOM traceability
This starter ships as a pre-assembled unit containing the contactor 3RT2015-2FB41, the link module 3RA2911-2AA00, the circuit-breaker 3RV2011-0HA25, and the busbar adapter 8US1251-5DT11 — each with its own order code for spares tracking. The main current circuit and the auxiliary/control circuit both terminate via spring-loaded terminals, eliminating screw torque verification during panel build.
Mounting and clearance for panel layout
Dimensions are 260 mm height, 45 mm width, 155 mm depth — the width is the tight axis for rail spacing. Mounting position is vertical only. Clearance requirements: 50 mm upwards, 20 mm forwards, 20 mm at the side, 10 mm downwards, and 0 mm backwards — the rear face sits flush against the busbar adapter. Operating temperature range is -20 to +60 °C with 10 to 95 % relative humidity, suitable for unconditioned electrical rooms and light industrial enclosures.