SIEMENS 6EP1333-2AA01 Sitop Smart 5A Power Supply | Replacement, Equivalent & Selection Guide
The SIEMENS 6EP1333-2AA01 is a 24 VDC / 5 A stabilized power supply from the Sitop Smart series, delivering 120 W of reliable output power for industrial automation systems. This page provides full technical specifications, compatible replacement models, application guidance, and a structured selection guide to help engineers and procurement teams make the right sourcing decision.
Technical Specifications
- Part Number: 6EP1333-2AA01
- Brand: SIEMENS
- Series: Sitop Smart
- Input Voltage: 120 / 230 VAC (wide-range input), 50/60 Hz
- Output Voltage: 24 VDC (adjustable 22.8–26.4 V)
- Output Current: 5 A
- Output Power: 120 W
- Efficiency: ≥ 89%
- Ripple & Noise: ≤ 150 mV peak-to-peak
- Protection: Overload, short-circuit, overvoltage
- Mounting: DIN rail (35 mm)
- Degree of Protection: IP20
- Operating Temperature: -25 °C to +70 °C
- Dimensions (W×H×D): 55 × 125 × 125 mm
- Weight: approx. 500 g
- Certifications: CE, UL, cUL, GL
- MTBF: > 500,000 h
Compatible Replacement & Equivalent Models
The following models are functionally equivalent or drop-in replacements for the 6EP1333-2AA01. Always verify electrical and mechanical compatibility before substitution.
- SIEMENS 6EP1333-3BA10 – Sitop PSU100S 24V/5A, newer generation with enhanced diagnostics
- SIEMENS 6EP1333-2BA20 – Sitop Smart 24V/5A, direct series successor
- PHOENIX CONTACT QUINT-PS/1AC/24DC/5 – 24 VDC / 5 A, DIN rail, SFB technology
- PHOENIX CONTACT STEP-PS/1AC/24DC/4.5 – 24 VDC / 4.5 A, compact budget alternative
- PULS QS5.241 – 24 VDC / 5 A, ultra-compact DIN rail PSU
- MEAN WELL SDR-120-24 – 24 VDC / 5 A, 120 W, DIN rail, cost-effective OEM option
- ABB CP-E 24/5.0 – 24 VDC / 5 A, DIN rail, suitable for ABB-centric panels
Note: Cross-reference datasheets for input range, hold-up time, and derating curves before final selection.
Why Choose the Original Model
- Proven reliability – MTBF > 500,000 h, field-tested in thousands of SIMATIC installations
- Seamless SIEMENS ecosystem integration – compatible with SIMATIC S7-300/400, ET 200, and TIA Portal diagnostics
- Wide-range AC input – accepts 120/230 VAC without manual switching, ideal for global deployments
- Compact DIN rail footprint – 55 mm width minimizes panel space
- Certified for harsh environments – CE, UL, GL approvals; operates from -25 °C to +70 °C
- Stable 24 VDC output – adjustable output voltage with low ripple protects sensitive PLC I/O modules
Typical Applications
- SIMATIC S7-300 / S7-400 PLC power supply rail
- ET 200 distributed I/O station power feed
- Industrial control panels and MCC cabinets
- Conveyor and material handling automation
- Building automation and HVAC control systems
- Process instrumentation and sensor power supply
- Machine tool and CNC auxiliary power
System Compatibility
- SIMATIC S7-300 / S7-400 – primary power supply for CPU and I/O modules
- SIMATIC S7-1200 / S7-1500 – auxiliary 24 VDC load power supply
- ET 200M / ET 200S / ET 200SP – distributed I/O power feed
- SINAMICS drives – 24 VDC control voltage supply
- PROFIBUS / PROFINET network components – switch and gateway power
- Third-party PLCs – any system requiring stable 24 VDC / 5 A DIN rail power
Selection Guide
Use the criteria below to confirm the 6EP1333-2AA01 is the right choice, or to identify the best alternative:
- Required output current ≤ 5 A, 24 VDC? → 6EP1333-2AA01 is a direct fit
- Need higher current (10 A / 20 A)? → Consider 6EP1334-2AA01 (10 A) or 6EP1336-2AA01 (20 A)
- Need advanced diagnostics / redundancy? → Upgrade to Sitop PSU8600 or PSU100S series
- Budget-sensitive OEM application? → MEAN WELL SDR-120-24 offers comparable specs at lower cost
- Phoenix Contact panel standard? → QUINT-PS/1AC/24DC/5 with SFB is the preferred equivalent
- Ultra-compact panel space? → PULS QS5.241 at 45 mm width saves 10 mm per unit
- Replacement for legacy Sitop Smart (pre-2010)? → 6EP1333-3BA10 is the certified successor
Quality Assurance & Sourcing
- All units sourced from authorized distributors and verified industrial suppliers
- Each unit undergoes incoming inspection: label verification, packaging integrity, and functional power-on test
- Original SIEMENS factory packaging preserved where available
- Traceability documentation (batch/lot records) available on request
- Counterfeit-risk mitigation: hologram labels, serial number cross-check with SIEMENS database
- Warranty: 12 months from shipment date
How to Order
- Part Number: 6EP1333-2AA01
- MOQ: 1 unit
- Lead Time: In-stock items ship within 1–3 business days; ex-stock orders confirmed at checkout
- Payment: T/T, PayPal, credit card, and trade account (approved buyers)
- Shipping: DHL / FedEx / UPS express worldwide; sea freight available for bulk orders
- Custom Quantity / Project Pricing: Contact [email protected] for volume discounts
- Urgent Requirements: Call +0086 19859288691 for same-day quotation
Replacement & Compatibility FAQ
Q: Is the 6EP1333-2AA01 still in production?
A: This model has been superseded by the 6EP1333-3BA10 (Sitop PSU100S). The 6EP1333-2AA01 remains available as new-old-stock (NOS) and refurbished units. Contact us to confirm current availability.
Q: Can I replace 6EP1333-2AA01 with 6EP1333-3BA10 directly?
A: Yes. The 6EP1333-3BA10 is the certified successor with identical output (24 VDC / 5 A) and the same DIN rail footprint. No wiring changes are required.
Q: Will a MEAN WELL SDR-120-24 work as a replacement?
A: Electrically compatible (24 VDC / 5 A / 120 W, DIN rail). However, it lacks SIEMENS-specific diagnostics and may not meet panel certification requirements in some regions. Suitable for non-critical or OEM applications.
Q: What is the difference between Sitop Smart and Sitop PSU100S?
A: Sitop PSU100S (e.g., 6EP1333-3BA10) is the newer generation with improved efficiency (>92%), integrated diagnostics output, and wider temperature range. Sitop Smart is the legacy series.
Q: Do you provide a certificate of conformity?
A: Yes. A certificate of conformity and test report are available upon request for all units.
Q: Can I order a mixed lot of original and equivalent models?
A: Yes. Contact our sales team to discuss mixed-SKU orders and project-based sourcing.
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