The Siemens 3RT1054-1XF46-0LA2 is a SIRIUS contactor in the Size S6 frame, carrying six main contacts and a 110 VDC coil. The DC coil means it holds in without AC hum and drops out cleanly on DC control circuits — relevant if your panel runs a 110 VDC control bus from a battery-backed supply or rectified rail.
Switching duty and operating rates
Maximum switching rates vary by duty class: 1 000 operations per hour in AC-3 and AC-3e, 800/h in AC-1, 400/h in AC-2 and DC-1, 500/h in DC-3 and DC-5, and 130/h in AC-4. The AC-4 rate is the limiting factor for plugging or inching duty — if your application requires frequent reversing or jogging, the 130/h ceiling governs the cycle budget.
Panel fit and mounting flexibility
Screw fixing is the standard fastening method. Overall dimensions are 172 mm height, 120 mm width, 170 mm depth.
Wiring terminals and conductor range
The single 9 mm diameter mounting hole is sized for M8 hardware.
Auxiliary contact DC ratings and arcing time
The auxiliary switch is rated 6 A at 24 VDC, 2 A at 48 VDC, and 2 A at 60 VDC. The dropout time on DC is 80 to 90 ms, which is the interval the load sees before the main contacts open.
Environmental limits and mechanical endurance
Typical mechanical life is 10 000 000 operations. The full-scale value for the thermal overload relay setting range is 1.25, with an initial value of 0.7 — these are the adjustment limits on the matching overload relay.