Siemens 6EP33348SB000AY0 DIN Rail Power Supply
Engineering Verification Checklist
- Confirm AC supply matches the unit's two input ranges (85–132 VAC or 176–264 VAC)
- Verify load current does not exceed 10 A continuous at 24 VDC output
- Check that ambient enclosure temperature stays within 25°C to 70°C with derating applied
- Confirm IP20 rating is adequate for the installed environment (no liquid splash protection)
- Validate required agency certifications are listed: CB, cCSAus, CE, CSA, cUL, cULus, UL
- [ [ ] Verify 94% efficiency meets thermal load budget in sealed cabinets
- Confirm output adjustability range covers the system nominal voltage requirement
- Verify hazardous location suitability matches classified area classification if applicable
Overview
The 6EP33348SB000AY0 is a Siemens SITOP-family 24 VDC DIN-rail power supply rated for up to 10 A (240 W). The "6EP3" prefix denotes the SITOP PSU300M series—single-phase, switched-mode units intended for industrial control panels. The device accepts universal AC input (85–132 VAC or 176–264 VAC) and carries multi-agency certifications including cULus and CE for commercial and industrial applications.
Output is adjustable around 24 VDC, with efficiency rated at 94% and an IP20 enclosure. Operating temperature spans 25°C to 70°C with thermal derating above approximately 45°C in typical panel environments.
Key Specifications
| Parameter | Value |
|---|---|
| Output Voltage | 24 VDC (adjustable) |
| Output Current (max) | 10 A |
| Output Power | 240 W |
| AC Input Voltage | 85–132 VAC / 176–264 VAC |
| Input Type | AC |
| Efficiency | 94% |
| Operating Temperature | 25°C – 70°C (with derating) |
| Enclosure Rating | IP20 |
| Number of Outputs | 1 |
| Certifications | CB, cCSAus, CE, CSA, cUL, cULus, UL |
| Applications | Hazardous Locations, Industrial, ITE (Commercial) |
| Package | Bulk |
Similar Catalog Parts
The table below presents in-catalog comparison rows sharing identical category path and at least one parametric anchor with the primary unit. These are not OEM-approved interchange candidates; each requires the user's own qualification.
| Parameter | 6EP33348SB000AY0 | 6EP34347SB003AX0 | 6EP33337SB000AX0 | 6EP13341LB00 |
|---|---|---|---|---|
| Output Voltage | 24 VDC | 24 VDC | 24 VDC | 24 VDC |
| Output Current (max) | 10 A | 10 A | 5 A | 10 A |
| Output Power | 240 W | 240 W | 120 W | 240 W |
| AC Input Voltage | 85–132 / 176–264 VAC | 400–500 / 323–576 VAC | 100–240 / 85–264 VAC | 93–132 / 187–264 VAC |
| Input Type | AC | AC or DC | AC or DC | AC |
| Efficiency | 94% | 95.4% | 90.2% | 89% |
| IP Rating | IP20 | IP20 | IP20 | IP20 |
| Certification | cULus, CE, CB, CSA | cULus, CE, CB, CSA | cULus, CE, CB, CSA | cUL, cULus, CE, CB, CSA |
Why They Are Catalog-Peer Similar
-
6EP34347SB003AX0 shares the same 24 V / 10 A / 240 W output rating and IP20 features, but targets three-phase 400–500 VAC systems and accepts DC input (450–600 VDC). Efficiency is slightly higher at 95.4%. The input voltage family differs fundamentally from the primary unit's single-phase ranges.
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6EP33337SB000AX0 uses the same Siemens 6EP3-series chassis and carries identical IP20 and adjustable-output features, but is rated 5 A / 120 W—half the current and power of the primary. It accepts both AC and DC input.
-
6EP13341LB00 is another 24 V / 10 A / 240 W unit but belongs to the older 6EP1 family (indicated by the prefix). Efficiency is lower (89% vs 94%), operating temperature range differs (0–60°C), and it lacks cCSAus certification compared to the primary.