Product Overview

The Schneider Electric ABL8WPS24400 Regulated Switching Power Supply is an industrial power supply designed to provide stable 24 V DC power for automation systems, control circuits, and industrial electrical equipment. Part of Schneider Electric’s Phaseo ABL8 power supply range, this unit converts a three-phase AC input into regulated DC power for compatible industrial loads.

With a nominal output voltage of 24 V DC, an output current rating of 40 A, and a rated power of 960 W, the ABL8WPS24400 is suitable for applications requiring a substantial and dependable 24 V control power supply. Typical loads may include PLC systems, remote I/O, industrial sensors, relays, contactors, communication equipment, and other devices designed for a compatible 24 V DC supply.

The unit accepts a nominal three-phase input voltage of 380–500 V AC and provides an adjustable output voltage range of 24–28.8 V DC. Its regulated switching design supports stable power delivery under changing load conditions, while integrated protection functions help manage overload, short-circuit, overvoltage, and thermal fault conditions.

The ABL8WPS24400 has stated dimensions of 160 × 143 × 166 mm and a weight of 2.7 kg. It is designed for vertical DIN-rail mounting inside an appropriate electrical enclosure, making it suitable for industrial control cabinets where organized power distribution and service access are important.

For maintenance engineers and industrial spare-parts purchasers, the ABL8WPS24400 is particularly relevant to existing Schneider Electric automation installations. It can serve as the main 24 V DC supply for a control cabinet or as part of a broader power distribution arrangement, provided the connected load and installation meet the manufacturer’s specifications.

Product lifecycle note: Schneider Electric lists the ABL8WPS24400 as discontinued in its product information. The recommended replacement shown on some regional Schneider Electric pages is ABLU3A24400, a universal regulated power supply with a three-phase 380–500 V AC input and a 24 V DC, 40 A output. Regional product listings may differ, so the proposed replacement should be verified for the installation location and exact application.

Technical Specifications

Specifications are provided for product identification and planning. Always consult the applicable product documentation when confirming electrical ratings, protection behavior, installation requirements, and replacement suitability.

Function and Working Principle

The ABL8WPS24400 converts incoming three-phase AC electrical power into a regulated 24 V DC output. This output can then be distributed to compatible automation devices and control circuits.

1. AC input conversion

The power supply receives three-phase AC power through its designated input terminals. Its internal power-conversion circuitry processes the incoming electrical energy and converts it into a form suitable for regulated DC output.

The specified nominal input range is 380–500 V AC, with documented input limits of 320–550 V AC. These values must be considered when designing the electrical installation and selecting upstream protection.

The unit is intended for a compatible three-phase supply. It must not be connected to an incompatible single-phase supply simply because the nominal voltage appears similar.

2. Regulated DC output

After conversion, the power supply provides a nominal 24 V DC output for connected loads. The output voltage can be adjusted within the documented range of 24–28.8 V DC.

Voltage adjustment can be useful where a controlled voltage increase is required to compensate for voltage drops along a DC distribution circuit. However, the adjusted voltage must remain within the operating limits of every connected device.

A stable power supply helps automation equipment operate consistently, particularly where multiple electronic devices share the same DC distribution system.

3. High-current power delivery

The ABL8WPS24400 is rated for 40 A output current and 960 W of nominal output power. This capacity makes it suitable for control cabinets with substantial 24 V DC loads.

The actual current drawn depends on the connected devices. The supply should be selected according to the combined steady-state demand, startup currents, transient loads, and any required design margin.

Schneider Electric documentation specifies a temporary current boost of 150% of nominal current for four seconds under defined conditions. This feature may help accommodate short-duration load demands, but it should not be treated as permission to operate continuously above the rated output current.

4. Monitoring and diagnostic indication

The power supply includes LED indicators for output voltage and output current. These indicators help maintenance personnel assess the unit’s operating condition during inspection and troubleshooting.

The output-voltage indicator uses green and red indications, while the output-current indicator uses green, red, and orange indications. The precise meaning of each indication should be interpreted according to the product manual.

5. Integrated protection

The ABL8WPS24400 incorporates protection against several electrical and thermal fault conditions. Documented functions include overload and short-circuit protection, overvoltage protection, undervoltage tripping, and thermal protection.

Depending on the fault and configuration, the unit may require manual reset or may reset automatically after the fault condition clears. Correct protection settings and suitable upstream circuit protection remain important for overall system safety.

Role in Industrial Automation Systems

A reliable 24 V DC supply is essential in many industrial control systems. It provides the electrical power required by controllers, input/output modules, instrumentation, and control devices.

PLC and remote I/O power

Programmable logic controllers process machine logic and coordinate automated operations. Depending on the system design, a 24 V DC supply may power PLC-related equipment, remote I/O stations, and associated electronic modules.

The ABL8WPS24400 can be considered for installations whose total load and input supply match its ratings. The specific power requirements of the PLC and each connected module must be checked before determining whether this supply is appropriate.

Sensors and field instrumentation

Many industrial sensors and measuring devices use 24 V DC power. Examples include proximity sensors, photoelectric sensors, pressure transmitters, and other field instruments.

A correctly sized power supply can support these devices through a properly designed distribution circuit. Where sensitive instruments share a supply with inductive or switching loads, engineers should assess noise, transient behavior, grounding, and circuit segregation.

Relays and contactors

Control panels often use DC-powered relays, interface modules, and contactors. Their combined current demand must be considered when selecting a power supply.

Inductive loads can generate switching transients, so suitable suppression and wiring practices may be necessary. The power supply should be used within its specified operating conditions rather than relying on temporary overload capability as a substitute for adequate capacity.

Industrial communication equipment

Industrial Ethernet switches, communication gateways, remote monitoring devices, and other automation accessories may require 24 V DC power.

The ABL8WPS24400 can support compatible equipment when the voltage, current, and installation requirements are satisfied. A separate supply or branch protection may be appropriate for devices that require electrical isolation or enhanced availability.

Control cabinet power distribution

In a control cabinet, a high-capacity power supply may feed multiple protected DC branches. Branch circuits can then distribute power to different groups of devices.

Properly designed distribution makes it easier to isolate faults, maintain equipment, and identify excessive current draw. The power supply should be coordinated with branch protection, conductor sizes, grounding, and cabinet thermal management.

Industrial Applications

1. Manufacturing and assembly lines

Manufacturing systems use 24 V DC for PLCs, sensors, relays, and control interfaces. The ABL8WPS24400 can supply compatible loads in control cabinets serving assembly equipment, conveyors, and automated workstations.

2. Packaging machinery

Packaging machines may contain multiple sensors, control modules, actuators, and communication devices. A high-capacity DC supply can support these loads when their combined demand remains within the power supply’s ratings.

Correct load calculation is particularly important where several devices start or switch simultaneously.

3. Material handling systems

Conveyors, sorting systems, transfer stations, and automated handling equipment often rely on distributed control devices. A suitable 24 V DC supply can power control electronics and field devices associated with these systems.

The power requirements of motors and high-current actuators must be assessed separately; a 24 V control supply should not be assumed to replace a dedicated motor power source.

4. Process automation

Industrial process control systems use sensors, transmitters, controllers, and communication interfaces to monitor operating conditions. The ABL8WPS24400 may serve as a cabinet power source for compatible 24 V DC equipment.

Engineers should evaluate load stability, environmental conditions, instrument requirements, and the consequences of losing DC power to the process.

5. Electrical control panels

Control cabinets for pumps, fans, compressors, and other industrial equipment often require a central 24 V DC supply for control and monitoring circuits.

The ABL8WPS24400’s 40 A output rating can support relatively substantial DC loads, subject to correct load calculation, distribution design, and thermal management.

6. Maintenance of existing Schneider Electric systems

Facilities operating older Phaseo ABL8 equipment may need to replace a failed power supply while preserving the existing cabinet layout. The ABL8WPS24400 is relevant to such maintenance work when its input, output, and mounting characteristics match the installation.

Because the model is discontinued, maintenance teams should also consider the long-term availability of spare parts and the engineering requirements associated with a newer power supply.

Installation and System Integration

Proper installation is essential for electrical safety, reliable operation, and the service life of the power supply.

1. Verify the incoming electrical supply

Confirm that the available source is compatible with the specified three-phase input range. The ABL8WPS24400 is designed for a nominal 380–500 V AC three-phase supply.

Check the incoming voltage, phase arrangement, grounding, upstream circuit protection, and conductor sizing before connection. Installation should be performed by qualified personnel using the approved wiring diagram.

2. Mount the unit securely

The power supply supports symmetrical DIN-rail mounting using 35 × 7.5 mm or 35 × 15 mm rails. Install it in the specified vertical operating position.

Verify that the rail is securely fixed and that the enclosure provides sufficient mechanical support. Allow the clearances required by the product documentation for airflow, heat dissipation, wiring, and maintenance access.

3. Connect the output correctly

Identify the positive and negative DC output terminals before wiring the load. Incorrect polarity can damage connected electronic devices.

Use conductors of the appropriate cross-sectional area and install terminal connections according to the manufacturer’s specified tightening requirements. Avoid loose terminations, exposed conductors, and excessive mechanical strain on the wiring.

4. Calculate the total load

Add the expected current demand of all connected devices. Account for startup behavior, transient loads, continuous operating current, and future expansion where appropriate.

Although the nominal output current is 40 A, the design should not rely on operating continuously above that rating. Consider the environmental conditions and applicable derating requirements when determining usable capacity.

5. Manage heat and ventilation

The documented power dissipation is 76.8 W. This heat must be considered when arranging components inside the control cabinet.

High ambient temperatures and restricted airflow can reduce the power supply’s available output capacity and shorten component life. Follow the manufacturer’s mounting and derating guidance, particularly where the supply operates close to its rated load.

6. Test the system after installation

After wiring and inspection, verify the input voltage, DC output voltage, polarity, and status indicators. Test the supply under representative operating conditions and confirm that the voltage remains within the requirements of connected equipment.

If an output fault occurs, investigate overload, short circuits, wiring errors, excessive temperature, and supply-side issues before replacing the unit.

Compatible System Components

The ABL8WPS24400 is a power source, not a PLC or protection device for every downstream branch. Appropriate circuit protection, grounding, wiring, and load management must be designed around the complete installation.

Recommended Replacement Model and Replacement Considerations

The ABL8WPS24400 is discontinued in Schneider Electric product listings. Some regional Schneider Electric pages identify the ABLU3A24400 as the recommended replacement, while other regional listings may not show a direct replacement. Confirm the applicable regional recommendation before procurement.

Before substituting a newer power supply, consider the following:

• Input compatibility: Confirm the three-phase supply range and the required protective devices.
• Output capability: Verify the 24 V DC output, current rating, temporary overload characteristics, and voltage adjustment range.
• Mechanical fit: Compare the physical dimensions, DIN-rail arrangement, and cabinet clearance.
• Terminal arrangement: Check input, output, grounding, and diagnostic connections before rewiring.
• Thermal performance: Confirm cabinet ventilation and derating requirements.
• System continuity: Determine whether a power interruption during replacement is acceptable and plan the shutdown accordingly.

A newer model may offer improved availability or additional features, but it should not be treated as a direct drop-in replacement until the complete installation requirements have been checked.

Key Advantages

High-capacity 24 V DC output

The 40 A rating and 960 W nominal power provide substantial DC capacity for compatible industrial control loads.

Adjustable output voltage

The 24–28.8 V DC adjustment range allows the output to be set within the specified limits for the application. Any adjustment must remain compatible with all connected devices.

Three-phase input

The three-phase 380–500 V AC input is suitable for installations designed around the unit’s electrical ratings and provides a defined input configuration for industrial control cabinets.

Integrated electrical protection

Built-in overload, short-circuit, overvoltage, undervoltage, and thermal protection functions help manage abnormal operating conditions. They complement, rather than replace, appropriate upstream and branch-circuit protection.

DIN-rail installation

The DIN-rail mounting arrangement supports organized installation within compatible industrial electrical enclosures.

Diagnostic indicators

The output-voltage and output-current LEDs provide a convenient initial indication of operating status during commissioning and maintenance.

Technical FAQs

1. What is the Schneider Electric ABL8WPS24400?

It is a regulated switching power supply in the Schneider Electric Phaseo ABL8 range. It converts a compatible three-phase AC input into regulated 24 V DC power for industrial automation equipment.

2. What is the rated output current?

The rated output current is 40 A, with a nominal output power of 960 W.

3. What input voltage does the ABL8WPS24400 require?

It is designed for a nominal three-phase input of 380–500 V AC. The documented input voltage limits are 320–550 V AC. Verify the supply conditions and installation requirements before connection.

4. Can the output voltage be adjusted?

Yes. The documented output adjustment range is 24–28.8 V DC. Set the output according to the connected equipment’s permitted voltage range.

5. What are the dimensions and weight?

The stated dimensions are 160 × 143 × 166 mm, and the weight is 2.7 kg.

6. How is the power supply mounted?

The unit supports vertical mounting on compatible 35 × 7.5 mm or 35 × 15 mm symmetrical DIN rails.

7. Does the ABL8WPS24400 have overload protection?

Yes. Documentation lists protection against overload and short circuits, as well as overvoltage, undervoltage, and thermal fault conditions. Reset behavior depends on the type of fault and the applicable protection mode.

8. Is the ABL8WPS24400 discontinued?

Yes. Schneider Electric lists the model as discontinued in its product information. The precise lifecycle dates and replacement guidance can differ between regional product pages.

9. What is the recommended replacement?

Some regional Schneider Electric listings recommend the ABLU3A24400, a universal regulated power supply with a three-phase 380–500 V AC input and a 24 V DC, 40 A output. Confirm the regional recommendation and verify the electrical and mechanical requirements before replacing the original unit.

10. Can multiple ABL8WPS24400 units be connected in parallel?

The product family supports series or parallel arrangements under specified conditions. Schneider Electric documentation recommends series or parallel connections only between units with identical references and describes a suitable redundancy module for certain parallel arrangements. Follow the official wiring diagrams and application requirements.

11. What causes a power supply to shut down or enter protection?

Possible causes include excessive load, short circuits, overvoltage, low output voltage, excessive temperature, or an unsuitable input supply. Check the indicators, wiring, load current, and incoming power before concluding that the unit has failed.

12. Is the ABL8WPS24400 suitable for every 24 V DC device?

No. The connected equipment must support the output voltage and remain within the available current and power capacity. Consider startup current, transient behavior, environmental conditions, and the need for separate branch protection.

Procurement and Maintenance Recommendations

When sourcing the Schneider Electric ABL8WPS24400, verify the complete part number, product condition, electrical specifications, and terminal condition. For used or surplus equipment, request clear photographs of the model label and terminals, and ask whether the power supply has been tested under load.

Because the model is discontinued, buyers should check current stock and confirm the regional lifecycle status before planning a replacement. If the original model is unavailable, evaluate the ABLU3A24400 where it is recommended, but confirm mechanical dimensions, terminal arrangements, power requirements, and installation compatibility.

For maintenance planning, record the total 24 V DC load, incoming supply voltage, protective-device ratings, and the wiring arrangement. Keep the cabinet ventilation clear and inspect terminals periodically for signs of overheating, looseness, or discoloration.

If the power supply repeatedly enters protection, investigate the load and wiring before installing another unit. Replacing the supply without resolving a downstream short circuit or excessive current demand may cause the replacement to exhibit the same fault.

Conclusion

The Schneider Electric ABL8WPS24400 Regulated Switching Power Supply is a three-phase industrial power supply designed to deliver 24 V DC at up to 40 A, with a rated output power of 960 W. Its adjustable output, DIN-rail mounting, status indicators, and integrated protection functions make it suitable for compatible industrial control power applications.

With stated dimensions of 160 × 143 × 166 mm and a weight of 2.7 kg, the unit can be identified and assessed for existing control cabinet installations.

As the ABL8WPS24400 is discontinued, maintenance teams should verify availability and review the applicable replacement guidance. The ABLU3A24400 is identified as a replacement on some regional Schneider Electric product pages, but the final selection should be based on a detailed comparison of electrical ratings, mounting, wiring, thermal requirements, and system compatibility.