6ES7138-4DF00-0AB0 SIEMENS

6ES7138-4DF00-0AB0 SIEMENS Power Board

Product  Description：

Siemens power boards are engineered to provide high-efficiency power conversion for industrial control panels. They feature robust electronic circuitry designed to handle wide input voltage ranges, deliver overload and short-circuit protection, and maintain tight voltage regulation. The units are typically housed in compact, ventilated enclosures suitable for standard DIN rail mounting inside industrial control cabinets. They incorporate status LED indicators for operational monitoring, diagnostic signaling contacts for remote error detection, and pluggable terminal blocks for fast and secure wiring.

Product Parameters

• Input Voltage Range: Typically supports wide-range single-phase or three-phase alternating current inputs from 85 V AC to 264 V AC, or 340 V AC to 550 V AC, accommodating global power grid fluctuations.

• Output Voltage: Standard nominal output of 24 V DC, with adjustable output voltage ranges typically between 22.8 V DC and 28.8 V DC to compensate for line drops.

• Output Current Capacity: Available in various current ratings ranging from 2.5 A, 5 A, 10 A, 20 A, up to 40 A or higher depending on the specific model requirements.

• Efficiency: High energy conversion efficiency, frequently exceeding 88 percent to 93 percent, minimizing internal heat generation and power losses.

• Mounting Type: Designed for standard 35 mm DIN rail mounting or direct wall mounting using integrated mechanical brackets.

• Operating Temperature Range: Standard models operate reliably from -25°C to +70°C, with thermal derating applicable at higher ambient temperatures above +60°C.

• Hold-up Time: Power failure buffering time of typically greater than 20 milliseconds at full load, ensuring seamless operation during brief input voltage dips.

Product Advantages

• High Operational Reliability: Built with robust electronic components and advanced overload protection features to guarantee long-term, maintenance-free operation in harsh industrial environments.

• Selective Protection and Diagnostics: Integrated diagnostic features, such as DC OK signal contacts and diagnostic outputs, allow real-time monitoring of operational status and early warning of potential faults.

• Compact Footprint: Space-saving slim designs maximize available space inside crowded control cabinets without sacrificing thermal performance or power output capability.

• Parallel Connection Capability: Many models support parallel connection for redundant power supply configurations or increased total current output to meet higher power demands.

• Comprehensive Certifications: Complies with major international safety and industrial standards, including CE, UL, cULus, and hazardous location approvals.

Important Operational Considerations

• Ventilation and Clearance: Ensure adequate vertical and horizontal clearance around the unit inside the control cabinet to facilitate natural convection cooling and prevent thermal overload.

• Input Protection: Install external circuit breakers or fuses on the primary input side as recommended by the manufacturer to protect against severe short circuits and electrical surges.

• Voltage Adjustment: When adjusting the output voltage potentiometer, verify that the output voltage remains within safe operating limits for connected sensitive electronic loads.

• Parallel Connection Setup: When operating units in parallel for redundancy, ensure that decoupling modules or diode modules are used correctly to prevent reverse current flow and maintain true fault tolerance.

• Cabinet Environment: Although built for industrial use, the power board should be housed within an enclosure rated at least IP20 to protect against conductive dust, moisture, and accidental physical contact.

Product Applications

• Factory Automation: Powers programmable logic controllers, distributed I/O systems, sensors, and actuators across automated manufacturing lines and robotic cells.

• Process Control Systems: Provides stable, uninterrupted control power for distributed control systems in chemical plants, oil refineries, and water treatment facilities.

• Machine Building (OEM): Integrated into custom machine tools, packaging machinery, and material handling systems to deliver dependable core electrical power.

• Infrastructure and Energy: Utilized in building automation, power distribution substations, and renewable energy monitoring systems where high reliability is mandatory.

The structure and details of the product：

Our services：

Shipping Port:  China

Payment: Bank of Chicago, Bank of Singapore

Express cooperation: fedex, DHL, UPS and your express account

Service: Professional Sales provides 24 hours /7 days online service

Warranty: one year

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JUSTWELL PTE. LTD

Our main products include DCS control system spare parts, PLC system spare parts, and robot system spare parts. Our advantageous brands include Allen Bradley, Bently Nevada, ABB, HIMA, Reliance, Bender, National Instruments, Emerson Ovation, Honeywell, Siemens, Allen Bradley, ICS Triplex, FOXBORO, Schneider, GE Fanuc, Motorola, HIMA, Prosoft, and other imported industrial components. Our main products serve a wide range of electronic, metallurgical, chemical, and power plants Industries such as steel mills, rubber, cement, machinery and equipment, and construction.