Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument
Aircraft Equipment Problem Less Severe; Inflight Event / Encounter CFTT / CFIT
Software and Automation; Aircraft
While being vectored for approach into ZZZ. I asked the First Officer to execute an intercept course to the FAF as we were being vectored to just outside it. We were then turned further out. Once we were cleared for the visual I set the FAF altitude on the Mode Control Panel; and selected vertical speed to make sure we captured the localizer before intercepting the glide slope. Just as we leveled off at the FAF altitude of 1;600 MSL; ATC issued a Low Altitude Alert; and said to check altitude. At this time we were coming up on the FAF; and we were visual; so I continued and landed. No other alerts; warnings; or words.  After researching Low Altitude Alerts at the hotel I believe it was caused by my selected rate of descent of 1200 RPM; and it placed me below the glide slope. More than one lesson learned. In future I will ask the Pilot Monitoring to reload the approach; or just go-around; and setup for the approach again. Definitely would go missed if this was not a visual approach!
B737 Captain reported leveling at proper altitude and receiving a low altitude alert from ATC.