Mitsubishi R3-PS3-L Power Supply Module | Replacement, Equivalent & Selection Guide
The Mitsubishi Electric R3-PS3-L is a dedicated power supply module for the MELSEC-Q Series PLC platform. Designed for industrial automation environments, it delivers stable, regulated DC power to the CPU and I/O modules mounted on the Q-series base unit. This page provides full technical specifications, compatible replacement options, selection guidance, and sourcing information to help engineers and procurement teams make confident decisions.
Technical Specifications
- Model: R3-PS3-L
- Manufacturer: Mitsubishi Electric
- Series: MELSEC-Q (Q Series)
- Module Type: PLC Power Supply Module
- Input Voltage: AC 100–240 V (50/60 Hz)
- Output Voltage: DC 5 V / DC 24 V
- Output Current: 5 V: 6 A; 24 V: 0.6 A (typical)
- Power Consumption: Approx. 30 W
- Weight: 780 g
- Mounting: Q-series base unit slot
- Operating Temperature: 0 °C to 55 °C
- Storage Temperature: −20 °C to 75 °C
- Protection: Overcurrent, overvoltage, short-circuit protection
- Certifications: CE, UL (verify with current datasheet)
Compatible Replacement & Equivalent Models
When the R3-PS3-L is unavailable or requires a cost-effective alternative, the following models are commonly evaluated. Always verify electrical and mechanical compatibility before substitution.
- Q61P – Mitsubishi MELSEC-Q standard AC power supply; direct platform equivalent
- Q62P – Higher output capacity variant; suitable when additional current headroom is needed
- Q63P – Redundant power supply option for high-availability systems
- Q64P – Wide-range input power supply; ideal for unstable grid environments
- Q61SP – Slim-profile power supply for space-constrained base configurations
- Third-party equivalents – Compatible aftermarket modules are available; confirm output ratings, connector pinout, and firmware compatibility before deployment
Note: Konmask.com supplies both genuine Mitsubishi OEM modules and verified compatible alternatives. Contact us for availability and lead time.
Why Choose the Original R3-PS3-L
- Guaranteed compatibility with all MELSEC-Q series base units and CPU modules
- Stable regulated output minimizes noise interference on sensitive I/O and communication modules
- Built-in diagnostics with LED status indicators for rapid fault identification
- Long service life engineered for 24/7 industrial duty cycles
- Full Mitsubishi technical support and documentation availability
- Traceability – genuine parts carry manufacturer serial numbers for warranty and compliance purposes
Typical Applications
- Automotive assembly line control systems
- Food & beverage processing and packaging machinery
- Semiconductor and electronics manufacturing equipment
- Water treatment and utility SCADA systems
- Building automation and HVAC control panels
- Material handling, conveyor, and robotic cell controllers
System Compatibility
The R3-PS3-L is designed for use with the Mitsubishi MELSEC-Q Series platform. Compatible base units include:
- Q33B, Q35B, Q38B, Q312B (standard base units)
- Q52B, Q55B (extension base units)
- Q3DB, Q3RB (redundant and remote I/O base units)
Compatible CPU modules include the Q02(H), Q06H, Q12H, Q25H, Q02PH, Q06PH, and Q series process CPUs. Not compatible with the iQ-R or iQ-F series platforms — refer to the R-series or FR-series power supply modules for those systems.
Selection Guide
Use the following criteria to select the correct power supply module for your MELSEC-Q system:
- Step 1 – Calculate total current draw: Sum the 5 V and 24 V current consumption of all modules mounted on the base unit (refer to each module’s datasheet).
- Step 2 – Add 20% safety margin: Ensure the selected power supply output current exceeds the calculated load by at least 20%.
- Step 3 – Confirm input voltage range: Match the power supply input spec to your facility’s supply voltage (100–240 VAC for R3-PS3-L).
- Step 4 – Check base unit slot position: The power supply must occupy the designated PSU slot on the Q-series base unit.
- Step 5 – Consider redundancy requirements: For mission-critical systems, evaluate the Q63P redundant power supply configuration.
Quality Assurance & Sourcing
All Mitsubishi modules supplied by Konmask.com are sourced through verified supply channels. Each unit undergoes the following before dispatch:
- Visual and physical inspection for damage, counterfeit markings, or tampering
- Label and serial number verification against manufacturer records where applicable
- Functional power-on test (available on request for critical orders)
- Anti-static packaging with humidity indicator cards for safe transit
We maintain traceability documentation and can provide certificates of conformity upon request.
How to Order
- Online: Add to cart directly from this page — stock availability shown in real time
- Email: support@konmask.com — include model number, quantity, and required delivery date
- Phone/WhatsApp: +0086 19859288691
- Bulk / project orders: Request a formal quotation via email for volume pricing and lead time confirmation
- Lead time: In-stock orders ship within 1–3 business days; sourced orders typically 7–21 business days depending on origin
Replacement & Compatibility FAQ
Q: Can I replace the R3-PS3-L with a Q61P directly?
A: The Q61P is a different form-factor module from the standard Q-series lineup. Verify that the base unit slot dimensions and connector type match before substitution. Consult the Mitsubishi hardware manual for your specific base unit.
Q: Is the R3-PS3-L compatible with the iQ-R series?
A: No. The iQ-R series uses a different power supply form factor (R-series PSU). The R3-PS3-L is exclusively for MELSEC-Q series base units.
Q: Can I use a third-party power supply module?
A: Third-party modules may be used in non-critical or budget-constrained applications. Ensure output voltage, current ratings, and connector pinout are identical. Konmask.com can advise on verified compatible alternatives.
Q: What happens if the power supply is undersized?
A: An undersized PSU will trigger overcurrent protection, causing system shutdown or unstable operation. Always size with a minimum 20% current headroom above calculated load.
Q: Do you supply both new and refurbished units?
A: Yes. Please specify your preference when ordering. Refurbished units are tested and carry a limited warranty. New OEM units are available subject to stock and lead time.
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Contact: support@konmask.com | +0086 19859288691
