Weidmuller PRO DM 20 24V DC Diode Redundancy Module

$ 51.29

Weidmuller PRO DM 20 diode module ensures reliable 24V DC power redundancy, protecting industrial systems from power supply failure and downtime.

SKU Weidmullar-2486080000 Category

Product Description

Weidmuller PRO DM 20 Diode Module – High-Efficiency 24 V DC Redundancy Protection

The Weidmuller PRO DM 20 diode module is a reliable 24 V DC redundancy component designed to keep automation systems operating even if one power supply fails. It connects two DC power sources and delivers a stable output to the load, ensuring continuous operation in critical industrial environments. With high current capability, low voltage loss, and excellent energy efficiency, the PRO DM 20 supports demanding loads while limiting heat generation. Its compact DIN-rail mounting design and durable metal housing make it well suited for control cabinets where space, reliability, and uptime are key requirements.

In industrial applications where power interruptions can cause production losses, the Weidmuller PRO DM 20 diode module provides a dependable redundancy solution without complex electronics or setup. Its passive diode design automatically separates power supplies, preventing reverse currents and maintaining uninterrupted power delivery when one source drops out. This makes it ideal for protecting PLCs, industrial controllers, communication equipment, and I/O systems. High efficiency helps reduce internal cabinet temperatures, supporting long-term stability and consistent performance across a wide operating temperature range, while minimizing maintenance needs.

Why PRO DM 20?
The PRO DM 20 is chosen when system availability is critical and power failure is not an option. It delivers a simple yet highly effective redundancy concept by combining high current capability, excellent efficiency, and passive reliability in one compact module. With no software, configuration, or active electronics required, it offers long-term stability, reduced thermal stress, and dependable performance for industrial control systems that must run continuously without interruption.

What problem does it solve?
The PRO DM 20 eliminates the risk of downtime caused by single power supply failure. By safely isolating and decoupling two DC power sources, it ensures uninterrupted power delivery to critical loads even if one supply shuts down or degrades. This prevents unexpected system resets, data loss, and production stoppages, protecting sensitive automation equipment and maintaining stable operation in demanding industrial environments.

 


Key Features & Specifications – Weidmuller PRO DM 20: 2486080000

Feature Details Benefit
Product Type Diode module for DC power redundancy Ensures continuous power supply by safely combining two DC sources
Rated Input Voltage 24 V DC (input range 0…60 V DC) Compatible with standard industrial 24 V DC power systems
Output Current Capacity Up to 40 A continuous (derating at higher temperatures) Supports high-load automation devices without performance loss
Output Power Up to 932 W Enables reliable operation of power-hungry PLCs, IPCs, and I/O systems
Voltage Drop Approx. 0.7 V Minimizes energy loss and reduces heat generation
Efficiency > 97% at 24 V DC Improves energy efficiency and extends component lifespan
Redundancy Function Passive diode-based isolation Prevents reverse current and ensures automatic fault tolerance
Protection Against Reverse Voltage Yes Protects connected power supplies from damage
Mounting Method DIN rail mounting (TS 35), horizontal Fast installation and secure cabinet integration
Housing Material Metal, corrosion-resistant Suitable for harsh industrial environments
Degree of Protection IP20 Designed for use inside control cabinets
Operating Temperature Range -40 °C to +70 °C (with derating) Reliable performance in extreme industrial conditions
Connection Type Screw terminals (input and output) Secure wiring and vibration-resistant connections
Dimensions (W × H × D) 32 × 125 × 125 mm Compact footprint for space-efficient panel design
Compliance & Approvals RoHS compliant, UL certified Meets international safety and environmental standards

Download Weidmullar PRO DM 20 2486080000 Datasheet

 


Commercial Information – Weidmuller PRO DM 20 (2486080000)

Commercial Data Details
EAN Number 4050118496819
Net Weight 441 g

 


The Applications

1. Maintaining PLC Stability in Automated Production Lines

In automated manufacturing environments, programmable logic controllers and distributed I/O modules must remain powered to keep machines running accurately and safely. The PRO DM 20 diode module is used to connect two independent 24 V DC power supplies within control cabinets on assembly, filling, and packaging lines. If one supply fails or experiences voltage instability, the module automatically isolates it and maintains power to the control system. Its high current capability supports multiple devices, while the low voltage drop helps prevent control faults caused by undervoltage, ensuring smooth and predictable production processes.

2. Continuous Power for Industrial PC and Monitoring Systems

Industrial PCs and monitoring platforms rely on stable power to prevent system restarts and data loss. The PRO DM 20 is applied in control panels to provide passive redundancy between two DC power sources feeding computing and visualization equipment. When one power supply shuts down unexpectedly, the diode module ensures uninterrupted power without delays or software intervention. High efficiency reduces heat near sensitive electronics, supporting long-term reliability. This approach helps maintain continuous monitoring, protects operational data, and supports uninterrupted plant supervision in industrial automation systems.

3. Reliable Operation of Conveyor and Intralogistics Equipment

Conveyor systems and automated material handling installations depend on continuous power to avoid workflow interruptions. The PRO DM 20 diode module is commonly used in decentralized cabinets supplying controllers, sensors, and communication devices along conveyor lines. By isolating and combining redundant power supplies, it keeps essential control electronics operational even during partial power loss. Its durable metal construction and wide operating temperature range allow dependable performance in industrial environments where dust, vibration, or elevated temperatures are present, helping maintain consistent material flow and system availability.

4. Power Protection for Remote and Field-Mounted Automation Panels

Remote automation panels in pumping stations, utility infrastructure, or outdoor industrial sites often face unstable or fluctuating power conditions. The PRO DM 20 is used to secure power delivery to critical field devices such as remote I/O modules, gateways, and control units. Its diode-based isolation prevents reverse currents between power sources, reducing the risk of cascading failures. High current handling supports multiple loads, while efficient thermal performance ensures stable operation in compact enclosures, improving system resilience and reducing maintenance requirements.

 


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