Red pilot light with push-to-test, 24 VDC, cage clamp
This Siemens 3RA9012-5BG33 is a red pilot light assembly with a push-to-test feature, running on 24 VDC and carrying one normally-open plus one normally-closed contact (1NO + 1NC). The cage clamp connection means you land the wire without tightening a screw — just insert a stripped conductor and the spring clamps it. That saves time on a panel build and holds up better under vibration than a screw terminal.