The Mitsubishi QS061P-A2 is a safety power supply unit from the MELSEC-QS Series, designed to provide isolated DC power to safety CPU and I/O modules in a QS rack. It accepts AC 200-240 V (-15% to +10%) and delivers a rated 6 A at 5 VDC to the backplane. The ERR contact output (DC 24 V, 0.5 A) signals a fault condition, with a green LED for normal operation and lights-off for abnormal. Screw terminal wiring (M3.5) is standard.
Mitsubishi QS061P-A2 Safety Power Supply, 200-240VAC, 6A 5VD
MPNQS061P-A2
Mitsubishi MELSEC-QS Series safety power supply unit, QS061P-A2, 200-240 VAC input, 6 A at 5 VDC output, screw terminal block.
$1,242.00Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
Specifications
| Parameter | Value |
|---|---|
| Withstand voltage | Input . LG collective and output . FG all together AC 2830 Vrms / 3 cycles (altitude 2000 m) |
| Input supply voltage | AC 200 - 240 V (-15% to + 10%) |
| Input voltage distortion ratio | Within 5% |
| Rated switching voltage (current) | DC 24 V 0.5 A |
| Inrush current | 20 A within 8 ms |
| Rated output current DC 5V | 6 A |
| Input maximum apparent power | 125 VA |
| Allowable momentary power failure time | Within 20 ms |
| Input frequency | 50/60 Hz ± 5% |
| Base mounting position | QS series power supply unit mounting slot |
| External wiring connection method | Screw terminal block (M3.5 screw) |
| Response time OFF → ON | 10 ms or less |
All specifications
| Parameter | Value |
|---|---|
| Depth | 115 mm |
| Width | 55.2 mm |
| Shipping weight | 1.4 Kg |
| External dimensions height | 98 mm |
| Mass | 0.40 Kg |
| Efficiency | over 70 |
| Electrical | Rated switching voltage / current load: 100 thousand times or more |
| ON → OFF | 12 ms or less |
| Estimated lead time | Usually ships in 1 - 10 working days. |
| Lifespan mechanical | Over 20 million times |
| Conformity base unit | QS034B |
| Operation indication | LED indication (normal: green lighting, abnormal: lights off) |
| Insulation resistance | Input . LG collective and output . Between FG batch, input batch and LG, batch output and FG: 500 MV DC insulation resistance meter 10 MΩ or more |
| Contact output unit use | ERR contact |
| Overcurrent protection DC 5V | 6.6 A or more |
| Overvoltage protection DC 5V | 5.5 to 6.5 V |
| Minimum opening (closing load) | DC 5 V 1 mA |
Product details
Frequently asked questions
Will the QS061P-A2 drop into a panel specified around the Q61P-A2?
No. The QS061P-A2 is a safety-series power supply that mounts in a dedicated QS slot (conformity base unit QS034B), not the standard Q slot used by the Q61P-A2. The backplane and slot keying are different, so rewiring or a different base unit is required.
What are the key ratings for the QS061P-A2?
Input is AC 200-240 V (-15% to +10%), 50/60 Hz ±5%. Rated output is 6 A at 5 VDC. Overcurrent protection trips at 6.6 A or more; overvoltage protection is set at 5.5 to 6.5 V. The ERR contact output is rated DC 24 V, 0.5 A.
MPN
QS061P-A2