PLC & Automation Racks
Ensures unbroken 24VDC control power to PLCs, I/O modules, and HMIs in continuous process plants, preventing costly line stops and data loss.
Industrial Diode ORing Modules for N+1 Power Decoupling, Fault Isolation & Uninterrupted Operational Uptime.
High Reliability Power Decoupling
Micro Power SSMDOR Series Redundancy Modules are built specifically for industrial automation, process control, substations, and critical telecom infrastructure where DC bus availability cannot be compromised. In high-availability N+1 systems, connecting power supplies directly in parallel carries the risk of a shorted output bringing down the entire system.
By integrating low-loss diode ORing decoupling circuits, the SSMDOR redundancy module completely isolates two parallel DC power supplies. If one power unit experiences an internal failure or AC mains outage, the secondary power supply instantaneously feeds the load without any output voltage drop, disruption, or data loss.
Technical Specifications
Explore our industrial DIN rail redundancy modules engineered for 24V, 48V, and 110V DC applications from 5A up to 60A load current capacity.
| SR. NO. | ORDER CODE | RATED VOLTAGE | OUTPUT CURRENT | DIMENSIONS (L x W x H) MM | DECOUPLING TYPE |
|---|---|---|---|---|---|
| 1 | SSMDOR-2405 | 24VDC | 05A | 46 x 81 x 81.5 | Diode ORing Isolator |
| 2 | SSMDOR-2410 | 24VDC | 10A | 46 x 81 x 81.5 | Diode ORing Isolator |
| 3 | SSMDOR-2420 | 24VDC | 20A | 51 x 122 x 111.5 | Diode ORing Isolator |
| 4 | SSMDOR-2440 | 24VDC | 40A | 51 x 122 x 111.5 | Diode ORing Isolator |
| 5 | SSMDOR-2460 | 24VDC | 60A | 135 x 104 x 62 | High-Current ORing Array |
| 6 | SSMDOR-4805 | 48VDC | 05A | 46 x 81 x 81.5 | Diode ORing Isolator |
| 7 | SSMDOR-4810 | 48VDC | 10A | 46 x 81 x 81.5 | Diode ORing Isolator |
| 8 | SSMDOR-4820 | 48VDC | 20A | 51 x 122 x 111.5 | Diode ORing Isolator |
| 9 | SSMDOR-4830 | 48VDC | 30A | 51 x 122 x 111.5 | Diode ORing Isolator |
| 10 | SSMDOR-4840 | 48VDC | 40A | 51 x 122 x 111.5 | Diode ORing Isolator |
| 11 | SSMDOR-11010 | 110VDC | 10A | 51 x 122 x 111.5 | Substation Grade Isolator |
| 12 | SSMDOR-11020 | 110VDC | 20A | 51 x 122 x 111.5 | Substation Grade Isolator |
Engineering Excellence
Built with heavy-duty components and proven thermal management for continuous 24/7 industrial duty.
Completely isolates power supply outputs so that a short circuit in one unit never pulls down the live DC power bus.
Enables parallel power supply configurations to double system current capacity without causing cross-feeding issues.
Compact form factor with standard DIN rail bracket for fast, tool-free installation inside control cabinets.
Rugged heatsink design ensures stable continuous operation across extreme ambient temperature environments.
Industry Applications
Ensures unbroken 24VDC control power to PLCs, I/O modules, and HMIs in continuous process plants, preventing costly line stops and data loss.
Protects 110VDC tripping and control circuits in high-voltage substations, switchyards, and power generation control rooms.
Decouples 48VDC rectifiers powering core switches, routers, and microwave links to deliver 99.999% uptime for communications network nodes.
Technical FAQ
Connecting two power supplies directly in parallel without diode ORing isolation can lead to internal cross-feeding currents. If one power supply develops an internal short circuit on its output stage, it will pull down the voltage of the secondary healthy supply, resulting in a total system shutdown. A redundancy module prevents this by providing reverse current protection and decoupling.
Yes. The SSMDOR series includes dedicated models specifically rated for 24VDC, 48VDC, and 110VDC systems, ensuring proper insulation, thermal handling, and diode ratings across different industrial operating voltages.
Absolutely. They are engineered specifically for N+1 redundant setups, allowing dual power sources (or multiple units) to feed a single DC bus while maintaining complete isolation between power supplies.
Our engineering team can assist you in selecting the precise SSMDOR redundancy module for your panel drawing and DC bus current requirements.
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