The Siemens 6EP3333-7LB00-0AX0 is a regulated power supply delivering a rated 3.7 A at 24 VDC output. Input accepts 85–264 VAC (47–63 Hz) or 99–275 VDC. The single output is SELV per EN 60950-1.
Snaps onto DIN rail EN 60715 35x7.5/15 — standard 35 mm profile — and occupies a 45 mm top clearance plus 45 mm below for airflow and wiring. No side clearance needed (0 mm left and right), so it packs tight against adjacent devices on the rail. Push-in terminals at input (0.5–4 mm²) and output (0.5–2.5 mm²) speed wiring; no screwdriver needed for the power connections.
Thermal Reality and Derating
Rated full output up to +60 °C ambient. Above that, derate 1.5 % per Kelvin up to +70 °C.
Protection and Approvals
UL 508 listed (cULus, file E197259) and CSA C22.2 No. 107.1, plus cCSAus to UL 60950-1 / CSA 60950-1. CE marked and EAC approved. The output qualifies as NEC Class 2 per UL 1310, which simplifies wiring in plenum or raceway runs. Input protection calls for a 4 A C-curve or 6 A B/C breaker, or a Siemens 3RV2011-1EA10 set to 4 A.
Current production — no end-of-life notice. No official successor exists; the part is active.