Mean Well SCP-75-12 13.8V/5.4A Built-in Switching Buffer Power Supply

The Mean Well SCP-75-12 is a high-performance built-in switching buffer power supply designed for applications requiring uninterrupted DC power. With an output of 13.8V DC and 5.4A, it delivers 75W of reliable power. This unit integrates a UPS function and a battery charger, making it ideal for backup power systems using 12V lead-acid batteries (Flooded, Gel, AGM). It features comprehensive protections including short circuit, overload, over voltage, battery low, and battery reverse polarity (by fuse). The free air convection cooling ensures silent operation, while the DC OK and battery low signals provide easy monitoring. Suitable for security systems, fire alarms, access control, and industrial automation.

Advantages

Built-in UPS and battery charger functionality eliminates the need for separate devices. High efficiency of 83% reduces energy loss. Wide input voltage range (90~264V AC) ensures global compatibility. Compact chassis mount design with screw terminals simplifies installation.

Suitable for

• Security and fire alarm systems
• Access control and CCTV systems
• Industrial automation and control panels
• Emergency lighting and backup power systems

Key specifications

• Power Output: 75W
• Output Voltage: 13.8V DC
• Output Current: 5.4A
• Input Voltage: 90 ~ 264V AC
• Input Frequency: 47 ~ 63 Hz
• Efficiency: 83% (typical)
• Protections: Short Circuit, Overload, Over Voltage, Battery Low, Battery Reverse Polarity (by fuse)
• Cooling: Free air convection
• Operating Temperature: -20 ~ +60°C
• Mounting: Chassis mount, screw terminals
• Signals: DC OK, Battery Low
• Ripple & Noise: 120mVp-p

Recommendations

For optimal performance, use with a 12V lead-acid battery (not included). Ensure proper ventilation for free air convection cooling. The unit is designed for indoor use only.