LI120-20B24
120W 24V DIN rail power supply with active PFC, universal input (85-264VAC), and 92% efficiency.
Product Overview
Description
The LI120-20B24 is a 120W DIN rail mount power supply providing 24VDC output at 5A. It features universal AC input (85-264VAC), active power factor correction (PFC), and high efficiency up to 92%. This power supply is designed for industrial control panel applications with -25°C to +70°C operating temperature range and robust metal housing.
Product Series
LI Series
Primary Application
Industrial control panels
Key Features
- Universal AC input 85-264VAC
- Active PFC with power factor >0.95
- High efficiency up to 92%
- DIN rail 35mm mounting
- Wide operating temperature -25°C to +70°C
- DC OK relay contact
- Parallel operation capability
- Robust metal housing
Specifications
| Input Voltage | 85-264VAC / 120-373VDC |
|---|---|
| Output Power | 120W |
| Output Voltage | 24VDC |
| Output Current | 5A |
| Efficiency | Up to 92% |
| PFC | Active PFC >0.95 |
| Operating Temperature | -25°C to +70°C |
| Dimensions | 105 x 97 x 55mm |
| Mounting | DIN rail 35mm |
| Protection | OVP, OCP, OTP, SCP |
| Safety Standards | IEC/EN/UL 62368-1, EN 61000-3-2 |
| MTBF | >300,000 hours |
Applications
Industrial control panels
Industrial automation and control
PLC systems
Electronic system design
Factory automation
Industrial automation and control
Process control systems
Industrial automation and control
Building automation
Industrial automation and control
Machine control
Industrial automation and control
FAE Expert Insights
"Based on extensive field experience, this product delivers excellent performance across various operating conditions. The design incorporates proven architecture with robust protection features. Customers consistently report high satisfaction with reliability and ease of integration."
— Field Application Engineer, BeiLuo
Frequently Asked Questions
What wire gauge should I use for output connections?
For 5A output at 24V, use 18 AWG (0.75mm²) minimum, 16 AWG (1.0mm²) recommended. Voltage drop is approximately 0.1V per 10ft at 5A with 18 AWG. Use copper wire rated for 75°C or higher. Keep wire runs short and use ferrules on stranded wire for reliable connections.
Use 16-18 AWG for typical installations. Use larger gauge for long runs or when voltage drop is critical.
Can this supply be used outdoors?
The LI120-20B24 has -25°C to +70°C operating range suitable for many outdoor applications. However, it requires protection from direct moisture and dust. For harsh outdoor environments, consider using an enclosure with appropriate IP rating. The metal housing provides good durability for industrial environments.
Suitable for outdoor use with proper enclosure protection. Verify temperature range for your climate.
What is the inrush current?
Inrush current is typically 30A peak at 230VAC for less than 3ms. This is standard for 120W class power supplies with active PFC. Use appropriate circuit breakers (C or D curve) and fuses rated for inrush current. Stagger turn-on of multiple supplies to reduce combined inrush.
Standard inrush for this power class. Use appropriate input protection devices.
How do I connect the DC OK contact?
The DC OK contact is a SPDT relay (Form C) rated for 30VDC/1A. Connect COM to your monitoring circuit common, NO to the monitoring input for power-good indication. When output is within regulation, the contact closes. Use for PLC inputs, alarm indicators, or sequencing signals.
Connect to PLC input or monitoring system. Use for power status indication and sequencing.
Is this supply suitable for LED lighting?
Yes, the 24V constant voltage output is suitable for 24V LED strips and modules. The 5A capacity supports up to 120W of LED load. Ensure total LED power does not exceed 100W for safety margin. Consider inrush current for large LED arrays. Not suitable for direct driving of constant-current LEDs without additional drivers.
Suitable for 24V constant voltage LED applications. Ensure proper power margin.