MEAN WELL LRS-35-24 24V 35W Switching Power Supply 36W 24V 1.5A

The MEAN WELL LRS-35-24 is a compact and efficient 35W, 24V DC output switching power supply, delivering a reliable 1.5A current. Engineered for industrial applications, it boasts high reliability, excellent performance, and a cost-effective design. Key advantages include its universal AC input range, low no-load power consumption, and compliance with international safety standards, making it an ideal choice for a wide array of electronic equipment and automation systems.

Product Specifications

| Parameter             | Value                                 |

| :-------------------- | :------------------------------------ |

| Output Voltage        | 24V DC                                |

| Rated Current         | 1.5A                                  |

| Rated Power           | 36W                                   |

| Input Voltage Range   | 85-264VAC, 120-370VDC                 |

| Frequency Range       | 47-63Hz                               |

| Efficiency (typical)  | 84%                                   |

| Operating Temperature | -25°C to +70°C                        |

| Dimensions (L x W x H) | 82 x 51 x 28 mm                       |

| Approvals             | UL, CUL, TUV, CB, CE                  |

Core Features & Market Positioning

The MEAN WELL LRS-35-24 distinguishes itself through its robust design and broad acceptance in the industrial automation sector. Its key competitive advantage lies in its exceptional power density for its size, allowing for space-constrained applications. The unit incorporates over-voltage protection (OVP), over-current protection (OCP), and short-circuit protection (SCP), ensuring operational safety and longevity. This series is recognized for its reliability and consistent performance, making it a go-to solution for engineers seeking dependable power for critical systems. MEAN WELL's reputation for quality and a strong global distribution network further solidifies its market position as a leading provider of industrial power supplies.

Key Application Scenarios

This 24V, 1.5A power supply is ideally suited for powering a diverse range of industrial equipment. Common applications include control panels, LED lighting systems, automated machinery, communication devices, and instrumentation requiring a stable 24V DC source. Its universal input voltage capability makes it versatile for global deployment in manufacturing facilities, automation projects, and test and measurement setups. The compact form factor is particularly beneficial in applications where space is at a premium, such as within integrated control cabinets or embedded systems.

Practical System Integration Guidance

Integrating the MEAN WELL LRS-35-24 into existing systems is straightforward due to its standard pin assignments and compact dimensions. Ensure proper ventilation around the unit to maintain optimal operating temperatures, especially under full load. Connect the AC input terminals (L and N) to the mains supply, observing local electrical codes and safety regulations. The DC output terminals (+V and -V) should be connected to the load, ensuring correct polarity to prevent damage. For safety, always disconnect power before making any wiring changes. The power supply's internal components are designed for direct PCB mounting or can be secured within an enclosure using appropriate hardware.

Operation and Risk Mitigation

Safe operation of the LRS-35-24 requires adherence to its specified input voltage and current ratings. Avoid operating the power supply outside its ambient temperature range of -25°C to +70°C, as this can lead to performance degradation or failure. The built-in protection features, including OVP, OCP, and SCP, are designed to safeguard both the power supply and the connected equipment from electrical anomalies. In the event of a fault, such as an over-current condition, the unit will typically shut down to protect itself. Troubleshooting generally involves verifying input voltage, checking for short circuits on the output, and ensuring adequate cooling. Refer to the official datasheet for specific fault codes if applicable, though this model is designed for robust, fault-tolerant operation.

Scalability & Long-Term Value

The LRS-35-24 offers excellent long-term value through its robust construction and reliability, minimizing the need for frequent replacements. While this specific model is rated at 35W, MEAN WELL offers a broad range of power supplies within the LRS series that can accommodate higher power requirements, facilitating easy system upgrades or expansion. This compatibility allows engineers to maintain a consistent design approach as system demands grow. Furthermore, the inherent stability and efficiency of this switching power supply contribute to reduced energy consumption, aligning with growing demands for IIoT and energy-efficient industrial solutions.

Frequently Asked Questions

What is the maximum ambient temperature for the MEAN WELL LRS-35-24?

The LRS-35-24 is designed to operate reliably in a wide temperature range. Its specified operating ambient temperature is from -25°C to +70°C. This broad range ensures functionality in diverse industrial environments, from cold storage to moderately heated areas.

Exceeding this temperature can lead to reduced performance and potential damage. Proper ventilation is crucial, especially when the unit is under load. Always ensure adequate airflow around the power supply to dissipate heat effectively.

Consider derating the output current if operating continuously at temperatures above 50°C. This proactive measure helps maintain performance and extends the product's lifespan.

How do I connect the MEAN WELL LRS-35-24 to my system?

Connecting the LRS-35-24 involves simple screw terminal connections for both AC input and DC output. The AC input terminals are typically labeled L (Line) and N (Neutral), which connect to your mains power source. Ensure correct wiring according to local electrical codes for safety.

The DC output terminals are marked with '+' and '-' for positive and negative voltages. Connect these to your load, paying close attention to polarity to avoid damaging connected devices. The unit provides a stable 24V DC output at 1.5A.

Always ensure the power supply is disconnected from the AC source before making any connections or disconnections. Proper wiring is essential for safe and reliable operation of the power supply and the connected equipment.

What safety features are included in the LRS-35-24 power supply?

The LRS-35-24 incorporates several essential safety protection features. It includes Over-Voltage Protection (OVP), which safeguards connected devices from excessive output voltage. Additionally, it features Over-Current Protection (OCP) and Short-Circuit Protection (SCP).

These protections trigger automatically if the output current exceeds a safe limit or if a short circuit occurs on the output terminals. This prevents damage to the power supply itself and the equipment it is powering. The unit will typically shut down temporarily until the fault condition is cleared.

The power supply also complies with various international safety standards, such as UL, CUL, TUV, and CE, ensuring it meets rigorous quality and safety requirements for industrial use. Always refer to the product's specific documentation for detailed safety information.