Providing reliable logic power to fail-safe PLC architectures, the Mitsubishi Electric QS061P-A2 safety power supply unit delivers regulated voltage specifically for MELSEC-QS Series control installations. This unit mounts directly onto the safety base unit to power the safety CPU and integrated I/O infrastructure, ensuring high-availability operation under strict safety-instrumented parameters. With integrated diagnostics, including an active ERR contact, and robust overcurrent and overvoltage protections, it acts as the stable electrical foundation for critical industrial automation processes.
| Parameter | Specification Value |
|---|---|
| Manufacturer | Mitsubishi Electric |
| Model Number | QS061P-A2 |
| Mounting Slot | QS Series Power Supply Slot |
| Compatible Base Unit | QS034B |
| Input Supply Voltage | AC 200 - 240 V (-15% to +10%) |
| Input Frequency | 50/60 Hz (+/- 5%) |
| Input Max Apparent Power | 125 VA |
| Inrush Current | 20 A within 8 ms |
| Rated Output (DC 5V) | 6.0 A |
| Overcurrent Protection | 6.6 A or more |
| Overvoltage Protection | 5.5 to 6.5 V |
| Efficiency | Over 70% |
| Momentary Power Failure Ride-Through | Within 20 ms |
| Insulation Resistance | 10 MOhm or more (at 500V DC Megger) |
| Dielectric Withstand Voltage | AC 2830 Vrms / 3 cycles (Input-LG and Output-FG) |
| External Dimensions (H x W x D) | 98 mm x 55.2 mm x 115 mm |
| Product Weight | 0.40 kg |
| Shipping Weight (Calculated) | 1.4 kg |
| Terminal / Port | Functional Assignment / Rating |
|---|---|
| Main Supply Terminals | AC Line / Neutral (AC 200 - 240 V Input) |
| LG Terminal | Line Ground (Noise Filter Ground) |
| FG Terminal | Frame Ground (Chassis Ground) |
| ERR Contact | Diagnostic fault relay output (Rated DC 24 V, 0.5 A) |
| Terminal Screws | M3.5 Threaded Connection type |
The QS061P-A2 is dedicated exclusively to the MELSEC-QS safety series platform. It is keyed physically and electrically to slot into the QS034B safety base unit and cannot be utilized on standard Q-Series (non-safety) base units. Trying to force insertion into a standard base unit can result in physical structural damage to the connector interfaces.
This module features an inrush current envelope of 20 A lasting up to 8 ms. If powering multiple racks simultaneously, upstream circuit protection must be rated using D-curve or high-inrush magnetic delay breakers to avoid nuisance tripping during system hot-starts. Be mindful that the internal fuse is user-replaceable; however, a blown fuse typically points to an underlying backplane overcurrent fault that must be resolved before powering up again.
Always ensure that the LG and FG terminals are tied to a dedicated functional ground path to prevent high-frequency noise from corrupting logic signals, which can manifest as inter-module communication errors. Use M3.5 ring-tongue terminals and torque all connections to the manufacturer standard of 0.68 to 0.98 N-m for optimal contact resistance.
Isolate and lock out all primary AC power feeds before mounting or terminating this power supply. Verify zero-energy state with a calibrated voltage meter before handling connections. Failure to fully discharge power lines prior to termination can result in fatal electrical shocks and component destruction.
Hook the upper mounting tab of the module into the base unit's guide slot.
Firmly press the bottom of the module onto the base unit until it clicks securely into place, ensuring the backplane connector is fully engaged.
Tighten the module fixing screw (M3) to ensure stability against high-vibration industrial environments.
Wire input terminals, LG, and FG using M3.5 terminal lugs, verifying polarity and tightening to the rated torque spec.
Global Express Shipping
Returns & Warranty
Manufacturer: Mitsubishi Electric
Product No.: QS061P-A2
Country of origin:United States
Product Type: Safety Power Supply Units
Payment: T/T, Western Union
Weight: 1400g
Dimensions: 98 mm x 55.2 mm x 115 mm
Shipping port: Xiamen
Warranty: 12 months
Providing reliable logic power to fail-safe PLC architectures, the Mitsubishi Electric QS061P-A2 safety power supply unit delivers regulated voltage specifically for MELSEC-QS Series control installations. This unit mounts directly onto the safety base unit to power the safety CPU and integrated I/O infrastructure, ensuring high-availability operation under strict safety-instrumented parameters. With integrated diagnostics, including an active ERR contact, and robust overcurrent and overvoltage protections, it acts as the stable electrical foundation for critical industrial automation processes.
| Parameter | Specification Value |
|---|---|
| Manufacturer | Mitsubishi Electric |
| Model Number | QS061P-A2 |
| Mounting Slot | QS Series Power Supply Slot |
| Compatible Base Unit | QS034B |
| Input Supply Voltage | AC 200 - 240 V (-15% to +10%) |
| Input Frequency | 50/60 Hz (+/- 5%) |
| Input Max Apparent Power | 125 VA |
| Inrush Current | 20 A within 8 ms |
| Rated Output (DC 5V) | 6.0 A |
| Overcurrent Protection | 6.6 A or more |
| Overvoltage Protection | 5.5 to 6.5 V |
| Efficiency | Over 70% |
| Momentary Power Failure Ride-Through | Within 20 ms |
| Insulation Resistance | 10 MOhm or more (at 500V DC Megger) |
| Dielectric Withstand Voltage | AC 2830 Vrms / 3 cycles (Input-LG and Output-FG) |
| External Dimensions (H x W x D) | 98 mm x 55.2 mm x 115 mm |
| Product Weight | 0.40 kg |
| Shipping Weight (Calculated) | 1.4 kg |
| Terminal / Port | Functional Assignment / Rating |
|---|---|
| Main Supply Terminals | AC Line / Neutral (AC 200 - 240 V Input) |
| LG Terminal | Line Ground (Noise Filter Ground) |
| FG Terminal | Frame Ground (Chassis Ground) |
| ERR Contact | Diagnostic fault relay output (Rated DC 24 V, 0.5 A) |
| Terminal Screws | M3.5 Threaded Connection type |
The QS061P-A2 is dedicated exclusively to the MELSEC-QS safety series platform. It is keyed physically and electrically to slot into the QS034B safety base unit and cannot be utilized on standard Q-Series (non-safety) base units. Trying to force insertion into a standard base unit can result in physical structural damage to the connector interfaces.
This module features an inrush current envelope of 20 A lasting up to 8 ms. If powering multiple racks simultaneously, upstream circuit protection must be rated using D-curve or high-inrush magnetic delay breakers to avoid nuisance tripping during system hot-starts. Be mindful that the internal fuse is user-replaceable; however, a blown fuse typically points to an underlying backplane overcurrent fault that must be resolved before powering up again.
Always ensure that the LG and FG terminals are tied to a dedicated functional ground path to prevent high-frequency noise from corrupting logic signals, which can manifest as inter-module communication errors. Use M3.5 ring-tongue terminals and torque all connections to the manufacturer standard of 0.68 to 0.98 N-m for optimal contact resistance.
Isolate and lock out all primary AC power feeds before mounting or terminating this power supply. Verify zero-energy state with a calibrated voltage meter before handling connections. Failure to fully discharge power lines prior to termination can result in fatal electrical shocks and component destruction.
Hook the upper mounting tab of the module into the base unit's guide slot.
Firmly press the bottom of the module onto the base unit until it clicks securely into place, ensuring the backplane connector is fully engaged.
Tighten the module fixing screw (M3) to ensure stability against high-vibration industrial environments.
Wire input terminals, LG, and FG using M3.5 terminal lugs, verifying polarity and tightening to the rated torque spec.
Global Express Shipping
Returns & Warranty
Orders are processed and delivered Monday-Friday (excluding public holidays).
For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .
| Country of origin |
United States
|
Replacing a 1756-L73 does not automatically mean upgrading its firmware. This guide compares v19.013, v21.011 and v31.011, focusing on project compatibility, HMI communications, legacy networks and...
Implement a 3-SPST switch XOR light circuit in LogixPro or RSLogix 500 using an internal relay bit. Includes truth tables, boolean equations, and verified.
Integrate Allen-Bradley CompactLogix, Caterpillar ATS, and generators into DeltaV DCS over Modbus RTU. Covers ProSoft MVI69-MCM, Miille DIN266 gateways.
ONS instruction fires but the OTE coil never latches in Studio 5000 because the one-shot is only true for one scan. Use OTL/OTU or seal-in logic instead.
Configure Allen-Bradley Kinetix 5500 servo drives on EtherNet/IP. Covers CIP Sync, IEEE 1588 V2 timing, Stratix selection, DLR topology, and HMI.
A moving-average filter is the sliding-window smoother most instrument engineers drop into DCS and PLC analog paths. Here is how the window works, how N and sample time set lag, and when a...
