The 3RA2115-1AH15-1FB4: This is a Siemens SIRIUS direct-on-line starter, size S00, designed specifically for snapping onto 60 mm busbar systems — not a DIN-rail mounted unit. The mounting position is vertical only. Control coil is 24 V DC, which is the standard industrial panel voltage. The supplied contactor is 3RT2015-2FB41, the link module is 3RA2911-2AA00, and the circuit-breaker is 3RV2011-1AA25 — all matched at the factory for coordination.
Physical envelope and clearance requirements
The starter occupies 45 mm width on the busbar, stands 260 mm tall, and projects 155 mm forward from the busbar face. That depth is the critical dimension for enclosure back-panel clearance — the busbar adapter 8US1251-5DT11 is supplied, so no separate adapter is needed. Clearance requirements: 50 mm above the unit, 20 mm below, 20 mm to the side, and 20 mm in front. Zero clearance behind — the busbar is the rear boundary.
Environmental limits and terminal design
Operating ambient range is -20 to +60 °C with temperature compensation active across that band. Storage and transport tolerance is -50 to +80 °C. Relative humidity during operation can run 10 to 95 % — no condensation limits stated, but that range covers most indoor industrial environments short of washdown zones. Both main current circuit and auxiliary/control circuit use spring-loaded terminals — no screw torque to verify, no vibration loosening. The product extension auxiliary switch is available (Yes), so a second contact block can be added without replacing the starter.
The supplied components (contactor, link module, circuit-breaker, busbar adapter) are listed as factory-matched sub-assemblies — ordering the complete starter code ensures coordination between the overload relay and the magnetic short-circuit trip without separate selection.