Product Description

The Mitsubishi A55B-UL is a power supply module designed for the MELSEC A Series programmable logic controllers (PLCs). It provides a stable 5V DC output at 8A, supporting the operation of various modules within the A-series PLC system. With dual AC input voltage capabilities (100–120V and 200–240V), it offers flexibility for different industrial environments. The module features overcurrent and overvoltage protection, ensuring the safety and longevity of connected components. Its compact design allows for easy integration into control panels, making it suitable for applications requiring reliable and efficient power distribution.​

Technical Specifications

• Model: A55B-UL
• Type: Power Supply Module
• Series: MELSEC A Series
• Input Voltage: 100–120V AC (0.95A), 200–240V AC (0.55A)
• Input Frequency: 50/60 Hz
• Output Voltage: 5V DC
• Output Current: 8A
• Overcurrent Protection: 8.8A or higher
• Overvoltage Protection: 5.5V to 6.5V
• Efficiency: ≥65%
• Dielectric Withstand Voltage: 1500V AC (AC terminals to ground), 500V AC (DC terminals to ground)
• Noise Immunity: 1500V peak-to-peak
• Insulation Resistance: ≥5 MΩ at 500V DC
• Power Indicator: LED display
• Mounting: DIN rail (35mm)
• Dimensions (W x H x D): 55 x 250 x 121 mm
• Weight: 0.75 kg
• Wire Size Compatibility: 0.75 to 2 mm²
• Terminal Screw Size: M4 x 0.7 x 6
• Applicable Crimping Terminals: R1.25-4, R2-4, RAV 1.25, RAV 2-4
• Tightening Torque: 118 N·cm
• Momentary Power Failure Tolerance: ≤20 ms