Mitsubishi A1S63P PLC Power Supply Unit | Replacement, Equivalent & Selection Guide
The Mitsubishi A1S63P is a dedicated power supply unit designed for the MELSEC-A Series programmable logic controller (PLC) platform. It provides stable DC power to the CPU and I/O modules mounted on the A1S-series base unit, making it a critical component in industrial automation and process control systems. This page serves as a comprehensive selection, replacement, and compatibility reference for engineers and procurement teams.
Technical Specifications
- Model: A1S63P
- Manufacturer: Mitsubishi Electric
- Series: MELSEC-A (A1S Series)
- Input Voltage: AC 100–240 V (50/60 Hz, auto-ranging)
- Output Voltage: DC 5 V
- Rated Output Current: 3 A
- Rated Output Power: 15 W
- Inrush Current: Max 20 A (at 240 VAC)
- Applicable Base Unit: A1S32B, A1S33B, A1S35B, A1S38B, A1S65B, A1S68B
- Mounting: Integrated into A1S-series base unit slot
- Operating Temperature: 0 °C to 55 °C
- Storage Temperature: −20 °C to 75 °C
- Humidity: 5% to 95% RH (non-condensing)
- Weight: Approx. 500 g
- Compliance: CE, UL, cUL
Compatible Replacement & Equivalent Models
When the A1S63P is discontinued or unavailable, the following Mitsubishi Electric models may serve as functional equivalents depending on your base unit and power budget. Always verify compatibility with your specific system configuration before substitution.
- A1S62P – 5 VDC / 2 A output; suitable for lighter-load A1S systems
- A1S63P-UK – UK/EU market variant; electrically equivalent
- A1S65P – Higher-capacity supply (5 A); backward-compatible with A1S63P base units
- A1S68P – Extended output; for larger I/O configurations
- Q61P / Q62P – MELSEC-Q series supplies; require base unit migration, not direct drop-in
Note: Third-party compatible power supplies are available. Contact support@konmask.com for vetted alternatives.
Why Choose the Original A1S63P
- Guaranteed compatibility with all A1S-series base units and CPU modules
- Stable 5 VDC output with built-in overcurrent and overvoltage protection
- Proven field reliability in 24/7 industrial environments
- Mitsubishi OEM quality — no firmware or communication risks from third-party substitutes
- Full technical support and documentation available from Mitsubishi Electric and Konmask.com
Typical Applications
- Automotive assembly line control panels
- Food & beverage processing automation
- Packaging machinery and conveyor systems
- Water treatment and utility SCADA systems
- Semiconductor and electronics manufacturing
- Building management and HVAC control
System Compatibility
The A1S63P is designed exclusively for the Mitsubishi MELSEC-A1S series platform. It is not compatible with MELSEC-Q, MELSEC-L, iQ-R, or iQ-F series base units without a full system migration. Confirm your base unit model number before ordering.
| Base Unit | Slots | A1S63P Compatible |
|---|---|---|
| A1S32B | 2 | ✔ Yes |
| A1S33B | 3 | ✔ Yes |
| A1S35B | 5 | ✔ Yes |
| A1S38B | 8 | ✔ Yes |
| A1S65B | 5 (slim) | ✔ Yes |
| A1S68B | 8 (slim) | ✔ Yes |
Selection Guide
Use the following criteria to confirm the A1S63P is the right power supply for your application:
- Step 1 – Identify your base unit: Confirm you have an A1S-series base unit (A1S32B through A1S68B).
- Step 2 – Calculate total current draw: Sum the 5 VDC current consumption of all installed modules. If total < 3 A, A1S63P is sufficient; if 3–5 A, consider A1S65P.
- Step 3 – Check input voltage: A1S63P accepts AC 100–240 V. Verify your panel supply voltage.
- Step 4 – Confirm operating environment: Ensure ambient temperature stays within 0–55 °C and humidity within spec.
- Step 5 – Replacement scenario: If replacing a failed unit, match the label on the existing PSU exactly. If upgrading, consult the compatibility table above.
Quality Assurance & Sourcing
All A1S63P units supplied by Konmask.com are:
- Sourced from authorized Mitsubishi Electric distributors or verified surplus channels
- Inspected for physical integrity, label authenticity, and functional condition
- Shipped with original packaging where available
- Backed by Konmask’s quality guarantee and return policy
We specialize in hard-to-find and legacy PLC components for industrial maintenance teams worldwide.
How to Order
- Online: Add to cart directly on this page at Konmask.com
- Email: support@konmask.com — include your model number, quantity, and delivery country
- Phone/WhatsApp: +0086 19859288691
- Lead time: In-stock items ship within 1–3 business days; sourced items 5–15 business days
- Bulk & OEM pricing: Available for orders of 5+ units — contact us for a quote
Replacement & Compatibility FAQ
Q: Can I use an A1S65P instead of an A1S63P?
A: Yes, the A1S65P is a higher-capacity (5 A) drop-in replacement for the A1S63P in all compatible base units. It is the recommended upgrade if your system is near the 3 A limit.
Q: Is the A1S63P compatible with MELSEC-Q series?
A: No. The Q series uses a different form factor and power architecture. A full base unit migration is required.
Q: Can I use a generic 5 VDC DIN-rail PSU as a replacement?
A: Not recommended. The A1S63P integrates directly into the base unit backplane. External PSUs require custom wiring and may void system warranties.
Q: How do I know if my A1S63P has failed?
A: Common symptoms include the CPU not powering on, the POWER LED being off or flickering, and all I/O modules being unresponsive. Measure DC 5 V output at the base unit connector to confirm.
Q: Do you offer tested/refurbished units?
A: Yes. Contact us to inquire about tested-used units at reduced pricing for budget-sensitive maintenance projects.
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Contact: support@konmask.com | +0086 19859288691
