SST APP-PS7-PCU-C / PSU1500S7 PROFIBUS Power Supply Unit | Replacement, Equivalent & Selection Guide
The SST APP-PS7-PCU-C and PSU1500S7 are industrial-grade power supply units designed for PROFIBUS communication processor cards and S7-series PLC backplane systems. Sourced directly from verified distributors, Konmask.com provides genuine, tested units with full traceability.
Technical Specifications
| Parameter | APP-PS7-PCU-C | PSU1500S7 |
|---|---|---|
| Manufacturer | SST (Woodhead / Molex) | SST (Woodhead / Molex) |
| Function | PROFIBUS PCU Power Supply Card | 1500 mA S7 Backplane Power Supply |
| Compatible Platform | PROFIBUS DP / S7-300 / S7-400 | S7-300 / S7-400 Backplane |
| Output Current | Refer to datasheet | 1500 mA |
| Input Voltage | 24 VDC nominal | 24 VDC nominal |
| Form Factor | PCU card module | Rail-mount module |
| Operating Temp. | 0 °C to +60 °C | 0 °C to +60 °C |
| Weight | ~2500 g (packaged) | ~2500 g (packaged) |
| Certifications | CE, UL (verify per lot) | CE, UL (verify per lot) |
Specifications subject to revision. Always verify against the official SST datasheet before installation.
Compatible Replacement & Equivalent Models
When the original SST unit is unavailable or end-of-life, the following alternatives are commonly evaluated by engineers:
- Siemens 6ES7 307-1EA01-0AA0 — S7-300 5 A power supply; compatible backplane form factor
- Siemens 6ES7 307-1BA01-0AA0 — S7-300 2 A power supply; lower current rating
- Phoenix Contact QUINT-PS/24DC/24DC/10 — DIN-rail 24 VDC/10 A; requires external wiring adaptation
- Weidmüller PRO ECO 30W 24V 1.25A — compact 24 VDC alternative for lower-load applications
- SST 5136-PFB-ISA / 5136-PFB-PCI — PROFIBUS interface cards (functional complement, not direct PSU replacement)
⚠ Compatibility Note: Always confirm voltage, current rating, connector pinout, and backplane slot dimensions before substituting any power supply module.
Why Choose the Original Model
- ✅ Plug-and-play compatibility — no wiring adaptation or firmware changes required
- ✅ Validated by SST for use with PROFIBUS PCU card sets in S7 environments
- ✅ Minimized downtime risk — identical form factor eliminates mechanical fitment issues
- ✅ Warranty-safe — using OEM parts preserves system integrator warranties
- ✅ Long-term support — Konmask maintains stock of legacy SST modules for MRO continuity
Typical Applications
- PROFIBUS DP network power supply for S7-300 / S7-400 communication processor cards
- Backplane power distribution in multi-rack Siemens PLC installations
- MRO (Maintenance, Repair & Overhaul) replacement in automotive assembly lines
- Process control panels in chemical, oil & gas, and water treatment plants
- Machine tool controllers and CNC retrofit projects
- Building automation and HVAC control systems using PROFIBUS infrastructure
System Compatibility
- PLC Platforms: Siemens S7-300, S7-400; SST PROFIBUS PCU card sets
- Fieldbus Protocols: PROFIBUS DP (EN 50170), PROFIBUS PA
- Software: STEP 7 v5.x, TIA Portal (via legacy hardware support)
- Backplane Standards: S7-300 rail; standard 35 mm DIN rail (PSU1500S7)
- Enclosure Rating: IP20 (panel-mount installation required)
Selection Guide
Use the decision matrix below to select the correct unit for your application:
| Requirement | Recommended Model |
|---|---|
| Direct OEM replacement for SST PROFIBUS PCU card power | APP-PS7-PCU-C |
| S7-300 backplane power, 1500 mA output | PSU1500S7 |
| Higher current needed (>1500 mA) | Siemens 6ES7 307-1EA01-0AA0 (5 A) |
| Budget-sensitive, lower load (<1 A) | Weidmüller PRO ECO 30W 24V |
| Non-S7 backplane, DIN-rail only | Phoenix Contact QUINT-PS series |
Not sure which model fits your system? Send your existing part number and rack configuration to support@konmask.com — our engineers will confirm compatibility within 24 hours.
Quality Assurance & Sourcing
- 🔍 4-Step Verification: Visual inspection → Label authentication → Functional power-on test → Packaging integrity check
- 📦 Original packaging preserved where available; anti-static packaging for all shipments
- 🌐 Global sourcing network — authorized distributors across North America, Europe, and Asia-Pacific
- 📋 Full traceability — lot numbers and sourcing documentation available on request
- 🛡 30-day DOA guarantee — defective-on-arrival units replaced at no cost
How to Order
- Confirm your required model: APP-PS7-PCU-C or PSU1500S7 (or both)
- Specify quantity and required delivery timeline
- Request a quote via support@konmask.com or WhatsApp +0086 19859288691
- Receive proforma invoice with lead time confirmation (typically 3–7 business days)
- Payment via T/T, PayPal, or credit card — shipment with tracking provided
Bulk orders (>5 units): Contact us for volume pricing and priority allocation.
Replacement & Compatibility FAQ
Q: Can PSU1500S7 directly replace APP-PS7-PCU-C?
A: They serve related but distinct functions. APP-PS7-PCU-C powers the PCU communication card; PSU1500S7 supplies the S7 backplane. Consult your system schematic before substituting.
Q: Are these units new or refurbished?
A: We supply new-in-box units as primary stock. Tested-used (refurbished) units are available on request and clearly labeled as such.
Q: Do you provide a certificate of conformance?
A: Yes. A CoC is available for all orders upon request at no additional charge.
Q: What is the lead time for out-of-stock units?
A: Typically 7–21 business days depending on sourcing region. Contact us for real-time availability.
Q: Can I return a unit if it doesn’t fit my system?
A: Yes, within 14 days of receipt in original condition. See our returns policy for details.
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Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691
