The PULS MOSFET Redundancy Module Series provides the most efficient available solution for paralleling power supplies in a redundant 1+1 or N+1 architecture. Unlike diode-based redundancy modules, MOSFET-based decoupling achieves an ultra-low voltage drop across the module — typically less than 50mV — maximising the output voltage available to connected loads and minimising wasted heat energy.

Available in 20A, 40A, and 80A continuous current ratings with 24V and 48V system voltage options, the MOSFET redundancy series covers the full range from medium to very high-current applications. Push-in spring terminal variants (YR40.245) enable fast, tool-free wiring, and dual-output variants offer flexible load distribution. The YR80 at 80A is the highest-current PULS redundancy module, suitable for the largest 24VDC redundant power systems.

Main Features:

• MOSFET decoupling for ultra-low voltage drop (<50mV) — more efficient than diodes
• Current ratings of 20A (YR20), 40A (YR40), and 80A (YR80)
• 24V and 48V system voltage variants
• Dual-output variants for flexible load distribution
• Push-in spring terminal variant (YR40.245) for tool-free wiring
• Automatic current sharing between parallel power supplies
• Active MOSFET switching for zero reverse current flow
• DIN rail mounting
• CE certified

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Current Rating:

• YR20: 20A
• YR40: 40A
• YR80: 80A

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System Voltage:‍

• 24 VDC (standard variants)
• 48 VDC (YR20.246, YR40.482)

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Voltage Drop:

• < 50mV (MOSFET — significantly lower than diode alternatives)