Product Overview
Unstable power can disrupt critical industrial networks. The Siemens 6GK5791-2AC00-0AA0 Power Supply PS791-2AC delivers a consistent 18V DC output from a wide AC input range, ensuring reliable operation for your SCALANCE W786 system. This compact, IP65-rated unit is built for harsh environments, offering a robust solution for wireless access points and other field-deployed equipment.
Technical Specifications
The Siemens 6GK5791-2AC00-0AA0 provides industrial-grade performance with the following key parameters:
| Parameter |
Value |
| Product Type Designation |
Power Supply PS791-2AC |
| Rated Power |
10 W |
| Input Voltage (AC) |
90 ... 240 V AC |
| Supply Voltage (AC) |
100 ... 240 V AC |
| Line Frequency |
45 ... 65 Hz |
| Output Voltage (DC) |
18 V |
| Typical Supplied Active Power |
14.4 W |
| Buffering Time (min, at rated output current) |
20 ms |
| Protection Class |
VDE 0805, VDE 0100 |
| Input Connection |
3-pole screw-type terminal for AC power |
| Output Connection |
4 pin connector |
| Width |
133 mm |
| Height |
45 mm |
| Depth |
30 mm |
| Net Weight |
0.209 kg |
| Ambient Temperature (operation) |
-40 ... +60 °C |
| Protection Class (IP) |
IP65 |
| Safety Standards |
EN 60950, UL 60950-1 |
| Marine Classification (BV) |
Yes |
| Hazardous Zone Certificate (CCC) |
Yes; GB3836.1, GB3836.8; Ex nA IIC T4 Gc |
Industry Applications
The Siemens 6GK5791-2AC00-0AA0 is designed specifically for use with the SCALANCE W786 wireless industrial Ethernet access points. Typical applications include:
- Factory floor wireless networks requiring a rugged, weatherproof power source.
- Outdoor industrial automation zones where dust and water ingress must be avoided (IP65 rating).
- Marine environments certified by Bureau Veritas (BV).
With its wide temperature range (-40°C to +60°C) and compliance with hazardous area standards (Ex nA IIC T4 Gc), this power supply ensures uptime even in extreme conditions.
Installation & Setup Guidance
Install the Siemens 6GK5791-2AC00-0AA0 in a location that allows proper ventilation. Connect the AC input via the 3-pole screw terminal (90-240 V AC, 45-65 Hz). The output uses a 4-pin connector, delivering 18V DC. Mount the unit in a position that maintains the IP65 seal. The operating manual (German/English) is included in the scope of delivery.
Selecting Your Power Supply
Before purchasing, verify that your application requires a 10W, 18V DC supply for a SCALANCE W786 access point. The Siemens 6GK5791-2AC00-0AA0 is a dedicated solution and should not be used with other equipment without confirmation of electrical compatibility. For bulk or OEM orders, contact PLC Source PRO (formerly ubest101) for competitive pricing and fast delivery.