Siemens 6EP3337-8SB00-0AY0 Power Supplies
The Siemens 6EP3337-8SB00-0AY0 Power Supplies provides 40 A output, 960 W active power, and IP20 protection for industrial 24 V systems. It supports 1-phase and 2-phase AC networks with automatic DC range selection, includes a relay contact for “24 V OK,” and uses screw terminals within a 145 × 145 × 150 mm enclosure. Designed for −40 to +85 °C transport and storage, it mounts on DIN rail EN 60715. This model belongs to the Siemens brand and the Siemens Power Supplies category under the SITOP Series.

| Brand | Siemens |
| Product Type | Power Supplies |
| Model Number | 6EP3337-8SB00-0AY0 |
Siemens 6EP3337-8SB00-0AY0 Power Supplies – Technical Specifications
| Specification | Value |
|---|---|
| Type of the power supply network | 1-phase and 2-phase AC |
| supply voltage at DC | Automatic selection; startup starting from Ue ≥ 90/180 V |
| line frequency | 50/60 Hz |
| line frequency (2) | 45 ... 65 Hz |
| type of signal at output | Relay contact (NO contact, rating 60 V DC/ 0.3 A) for "24 V OK" |
| rated value | 40 A |
| rated range | 0 ... 40 A; +60 ... +70 °C: Derating 3%/K |
| supplied active power typical | 960 W |
| protection class IP | IP20 |
| during transport | 40 ... +85 °C |
| during storage | 40 ... +85 °C |
| type of electrical connection | screw terminal |
| width × height × depth of the enclosure | 145 × 145 × 150 mm |
| installation width × mounting height | 150 mm × 225 mm |
| Top | 40 mm |
| Bottom | 40 mm |
| Left | 0 mm |
| Right | 0 mm |
| fastening method | Snaps onto DIN rail EN 60715 35x15 |
| net weight | 3.1 kg |
The Siemens 6EP3337-8SB00-0AY0 Power Supplies is part of the SITOP Series used for stable 24 V power delivery in automation systems. The unit delivers 40 A rated output, 960 W active power, IP20 protection, and automatic DC selection for predictable electrical behavior. Siemens integrates relay signaling for “24 V OK,” providing clear diagnostics within control panels and industrial machines.
The Siemens 6EP3337-8SB00-0AY0 Power Supplies is suited for conveyors, assembly systems, packaging machinery, and cabinet-level distribution. Its screw-terminal wiring, DIN-rail fastening, and temperature-derated current range help sustain reliable operation in variable thermal conditions. These characteristics ensure consistent voltage output, reduced wiring complexity, and dependable load support for continuous-duty equipment.
The Siemens 6EP3337-8SB00-0AY0 Power Supplies supports 40 A output, relay-based status signaling, and DIN-rail mounting for structured integration in automation panels. Its enclosure dimensions, storage limits, and AC/DC flexibility maintain suitability for industrial environments requiring stable 24 V supply. These attributes reinforce the model’s reliability and alignment with the SITOP Series for long-term operational performance.


