Astron
Astron RS-20A-BB
Best reliable power supply for professionals needing uninterrupted equipment operation.
The Astron RS-20A-BB is a dependable linear power supply built for consistent performance. It offers a robust 20A intermittent current service (ICS) and a 16A continuous current rating, ensuring stable power delivery under various load conditions. This unit features integrated battery backup for uninterrupted operation during power outages. Its design prioritizes reliability and continuous power output, making it suitable for demanding applications where stable power is critical. The compact dimensions allow for flexible placement in various setups.
$238.05
Owner Satisfaction
4.7
/ 5
Category Rank
1
/ 870
Best UPS
Price vs Category Average
-86%
Below average
Intermittent Current Service (ICS)
20
/ A
Who it's for
- Radio operators requiring clean, interference-free power for sensitive equipment
- Professionals needing long-term, heavy-duty equipment they can rely on
- Users prioritizing the safety and protection of expensive connected hardware
Who should skip it
- Users with limited desk space or those needing portable power solutions
- Environmentally conscious buyers seeking energy-efficient, low-heat power options
- Budget-focused shoppers looking for the most affordable power supply available
Performance breakdown
Power Stability
Linear design ensures exceptionally clean and steady voltage for sensitive equipment.
Continuous Load Capacity
Handles 16A of constant draw without breaking a sweat.
Backup Reliability
Integrated battery system provides seamless transition during unexpected power interruptions.
Build Durability
Rugged construction built to withstand years of demanding, heavy-duty operation.
Form Factor
Compact footprint fits easily into tight workspaces or crowded equipment racks.
Thermal Management
Efficient heat dissipation maintains performance during extended periods of high usage.
Key Specs
Intermittent Current Service (ICS)
20A
Continuous Current Rating
16A
Product Type
Linear Power Supply
Dimensions
5 x 9 x 10-1/2 inches
Model Number
RS-20A-BB
Maximum Power Output
20.0 Watts
UPS Topology
Standby
Mounting Type
Desktop
Features
- Provides 20A intermittent current service
- Offers 16A continuous current rating
- Integrated battery backup for power continuity
- Reliable linear power supply design
- Stable and continuous power output
- Built for demanding applications
What customers say
The Astron RS-20A-BB is widely regarded as the benchmark for linear regulated power supplies, especially within amateur radio circles. Users consistently highlight its legendary reliability and superior noise suppression as key strengths. Its robust construction inspires confidence, often operating perfectly for many years, which validates the initial investment. The linear design delivers exceptionally clean power, crucial for sensitive radio gear where interference is unacceptable. While the unit is heavy and runs warm under load, these are accepted trade-offs for its outstanding stability. This supply is viewed as a dependable, long-term asset, earning high loyalty and strong recommendations from serious users.
Know before you buy
The 16A continuous rating indicates the maximum current the unit can supply indefinitely without overheating. The 20A intermittent rating is for short-term bursts of power, making it ideal for equipment that has high startup requirements or periodic spikes in demand.
This unit uses a standby UPS topology, meaning it monitors the incoming power and switches to the internal battery backup the moment it detects an outage. This ensures your connected equipment remains powered without interruption.
Linear power supplies like the RS-20A-BB are generally preferred for sensitive electronics because they produce less electrical noise and ripple compared to switching power supplies. This makes them a reliable choice for radio equipment and other precision devices.
No, the RS-20A-BB is specifically designed as a desktop unit. Its compact 5 x 9 x 10-1/2 inch footprint is intended for placement on a flat, stable surface.
Due to its stable, low-noise output and battery backup, this unit is ideal for demanding applications like amateur radio stations, communications equipment, and laboratory instruments where consistent, clean power is critical.
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