Siemens 6EP33367SC003AX0 DIN Rail Power Supply
6EP3336 family comparison
The 6EP3336 prefix places this unit in Siemens' mid-range 480W DIN rail series, all sharing 24VDC single-phase output and IP20 ratings. Readers must independently qualify all alternatives below.
| Spec | 6EP33367SC003AX0 (seed) | 6EP33367SB003AX0 | 6EP34347SB003AX0 | 6EP33337SB000AX0 |
|---|---|---|---|---|
| Output | 24V / 20A | 24V / 20A | 24V / 10A | 24V / 5A |
| AC Input | 85–264 VAC | 120–230 / 85–264 VAC | 400–500 / 323–576 VAC | 100–240 / 85–264 VAC |
| DC Input | 85–275 VDC | 85–275 VDC | 450–600 VDC | 99–275 VDC |
| Efficiency | 95.5% | 95.5% | 95.4% | 90.2% |
| Encapsulation | Box | Bulk | Bulk | Bulk |
| Approvals | CE, CSA, UL | CB, cCSAus, CE, CSA, cUL, cULus, UL | CB, cCSAus, CE, CSA, cUL, cULus, UL | CB, cCSAus, CE, CSA, cUL, cULus, UL |
| Similarity | — | 1.0 | 1.0 | 0.995 |
6EP33367SB003AX0 — same 20A / 95.5% / box package; adds universal input marking and bulk packaging variant.
6EP34347SB003AX0 — same efficiency; 10A / 400–500 VAC primary range and DC input up to 600V; different current rating and three-phase input architecture.
6EP33337SB000AX0 — same 6EP3336 series; 5A at 120W; lower efficiency (90.2%) and narrower DC input floor.
Input flexibility and derating
Accepts AC (85–264 VAC) or DC (85–275 VDC) without selector switch; supports direct DC bus backfit in systems where AC supply is unreliable. IP20 enclosure suits control cabinet interior mounting away from live busbars. Derating curves for elevated ambient temperature are not specified in the listed records—consult the official SITOP PSU6200 data sheet for thermal planning above 45°C enclosure ambient.
Engineering verification checklist
- Confirm load does not exceed 20A continuous; check inrush during capacitive load startup
- Verify adequate ventilation when mounted in sealed enclosure above 45°C ambient
- Check DC input voltage range (85–275 VDC) against available bus voltage under all operating states
- Confirm output adjustability range meets downstream instrument span requirements
- Validate that all required safety agency markings (CE, CSA, UL) are acceptable for the installation region
- Review EMC filter performance if unit is adjacent to sensitive analog instrumentation
- Test hold-up time at nominal load if specification mandates for downstream PLC/safety systems
- Verify DIN rail compatibility with EN 60715 TH35 profile before panel assembly
- Confirm correct ground bonding to panel chassis for IP20 protection integrity