1606-XLSRED40 Allen-Bradley 1606-XLS Redundancy Module, 40 A
The 1606-XLSRED40 is a dual-input MOSFET redundancy module from the Allen-Bradley Bulletin 1606-XL series. It decouples two 20 A supplies for 1+1 redundancy. The 40 A nominal output covers high-availability DC loads. Voltage drop is only 72 mV. Mount it on DIN rail. Stock ships in 24-28 hours via FedEx, UPS, or DHL. Write to info@oiltechcontrols.com or reach +86 158 8020 0923 on WhatsApp.
How Decoupling Works Here
- Two supplies feed the module, each with 20 A.
- MOSFET internal decoupling replaces diode ORing.
- Low loss keeps heat out of small enclosures.
- If one supply fails, the other carries the load.
- No communication port is needed or fitted.
Electrical Window
- Input range: DC 8.4…36.4 V, 2× 20 A inputs
- Output: DC 12…28 V nominal
- Output current: 40 A nominal
- Short-circuit current: 65 A maximum
- Voltage drop: 72 mV at the output
- Decoupling: MOSFET
Physical and Mounting
- Dimensions (H×W×D): 124 × 36 × 127 mm
- Weight: 340 g
- Mounting: DIN rail, enclosure mount
- Protection rating: IP20
- The 36 mm width keeps rail space low.
Environment and Approvals
- Operating temperature: -40 to +70 °C
- Storage temperature: -40 to +85 °C, non-operating
- Relative humidity: 5 to 95%, non-condensing
- Approvals: UL 60950-1, cUL, CE marked
- Lifecycle: active on Rockwell pages, in Bulletin 1606-TD002H (July 2023)
Oiltech Controls’s Insight
The 72 mV drop is the reason to pick MOSFET over diode ORing. Diode modules burn several hundred millivolts at 40 A. That heat lands inside your enclosure. Also check the input band against your supply output. Two 24 V supplies sit inside the 8.4…36.4 V input range with margin. Ask +86 158 8020 0923 on WhatsApp for a redundancy layout review.
Oiltech Controls Review
- Low loss design cuts panel heat.
- Narrow 36 mm body fits tight rails.
- Simple wiring, no setup software.
- Tested units arrive with clean decoupling.
- Useful spare for high-availability panels.
Which Equipment It Fits
- 1+1 redundant 24 V DC supply systems
- Control panels needing continuous power
- Loads up to 40 A nominal
- Retrofit jobs replacing diode ORing modules
- Panels with limited thermal headroom
Why Buy From Oiltech Controls?
- More than 15 years in automation spares.
- Global shipment support.
- Tested surplus and refurbished options.
- 12-month warranty on function.
- Technical verification before shipment.
- Support for obsolete control systems.
Warranty and Dispatch
- 12-month warranty on function.
- Dispatch in 24-28 hours after order.
- Carriers: FedEx, UPS, DHL.
- Tracking number sent at dispatch.
FAQ
Q: Do both input supplies need the same voltage?
A: Set both to the same output value. A small difference is fine. Large differences unbalance the load sharing.
Q: Can I use one supply only?
A: The module will pass power. You lose the redundancy purpose. Feed both inputs for real 1+1 operation.
Q: Why choose MOSFET over diode decoupling?
A: Lower voltage drop and less heat. At 40 A the saving matters for enclosure temperature.
Q: What load should I plan for?
A: Plan 40 A nominal, not the 65 A short-circuit figure. The 65 A value is a fault current limit.
Q: How do I confirm the wiring polarity?
A: Check input and output markings before energizing. A reversed input can damage the module. Email info@oiltechcontrols.com for the terminal drawing.
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