Universal Controller
Siemens RWF 50.20A9 Controller
The Siemens RWF 50.20A9 is a high-voltage comparator acting as the decision core in industrial boiler control. It evaluates analog signals against thresholds and drives safety relays, fuel valves and pressure limits with sub-microsecond response.
Specifications
| Brand | Siemens |
|---|---|
| Model | RWF 50.20A9 |
| Type | High-voltage output comparator / controller |
| Voltage range | 12 V to 600 V |
| Response | Sub-microsecond switching |
| Isolation | Optocoupler and magnetic barriers |
| Temperature | -40 C to +125 C |
| EMC | IEC 61000-4 compliant |
| Safety | UL 508 certified |
| Mounting | DIN-rail, modular terminals |
Why buyers choose it
- Sub-microsecond switching eliminates latency during pressure spikes or flameout.
- Integrated filtering suppresses EMI false-triggering near heavy machinery.
- Optocoupler/magnetic isolation shields low-voltage control boards from surges.
- Wide -40 to +125 C range exceeds commercial thermal limits.
- DIN-rail mounting and PLC/DCS integration cut retrofit wiring.
Applications
Boiler combustion control via optical/oxygen sensor comparison.
Pressure and temperature safeguard interlocks.
Automated emergency shutdown driving contactors and breakers.
Buyer Questions
Siemens RWF 50.20A9 Controller FAQs
What is the Siemens RWF 50.20A9?
A high-voltage comparator/controller (RWF 50.20A9) for 12-600 V boiler control with sub-microsecond response and UL 508 safety.
How does it improve safety?
It bypasses software delay to instantly trip contactors or relief valves when boiler metrics exceed safe limits.
Is it DIN-rail mountable?
Yes, standard DIN-rail brackets and modular terminals simplify PLC/DCS integration.
Request a quote for RWF 50.20A9
You may also like
