The ABB 500PSM03a 1MRB150038R1 is a 100W industrial power supply module dedicated to the ABB AC500 PLC system. Designed with high-frequency switching power supply topology, it supplies multiple isolated stabilized DC outputs for controllers, I/O modules and field sensors, serving as the core power supply component of the control system.(ABB related products:5SHY3545L0009,PPC322BE)
To learn more about this product click on the file below or download the file:
ABB 500PSM03a Power Supply module 1MRB150038R1.pdf
Product Advantages
Wide Input Range for Global Application: Dual input options of AC 85–264 V and DC 120–370 V, compatible with global power grids and fluctuating supply conditions.
High Efficiency & Low Power Consumption for Long-term Stability: Up to 92% full-load efficiency with low heat generation; MTBF > 500,000 hours, ideal for round-the-clock continuous operation.
Industrial-grade Protection & Superior EMC Performance: Conformal coating and IP20 protection; compliant with IEC 61000-4 EMC standards to withstand vibration and harsh electromagnetic environments.
Comprehensive Built-in Protection Circuits: Integrated protection against overvoltage, undervoltage, overload, short circuit, overheating and surge; automatic fault protection and quick reset capability.
Full Compatibility with ABB Product Ecosystem: Optimized for AC500-eCo/S/XC and 800xA I/O modules; supports redundant parallel connection to improve system fault tolerance.
Product Specifications
1. Electrical Parameters
Input: AC 85–264 V (50/60 Hz); DC 120–370 VOutput: 24 VDC / 4.2 A continuous, 6 A peak for 3 seconds; output adjustable within ±10%Rated Power: 100 W; Efficiency: 88% ~ 92%Ripple & Noise: ≤50 mV p-p; Voltage regulation accuracy: ±0.5%Dielectric Withstand Voltage: 3 kVAC / 1 min between input and output
2. Environmental & Mechanical Data
Operating Temperature: -25 °C ~ +70 °C; Storage Temperature: -40 °C ~ +85 °CHumidity: 0%–95% non-condensing; Ingress Protection: IP20Dimensions: 160×120×60 mm; Weight: approx. 0.8 kgMounting: Standard DIN rail mount; Hot-swap capable
3. Functional Features
Active inrush current limiting to reduce switch-on surge currentLED status indicator: Green for normal operation, Red for fault alarmSupports redundant parallel connection with automatic master-standby switching
Application Scenarios
Power & Energy Industry: Power supply for substation relay protection, RTU and measurement & control devices (compatible with REB500 and related products).
Process Industry: Central power feeding for DCS/PLC control cabinets in chemical, petrochemical, water treatment and pharmaceutical industries.
Intelligent Manufacturing: Automotive welding & assembly production lines, robot workstations and logistics sorting systems.
Infrastructure: Rail transit, tunnel engineering and building automation (HVAC, lighting and security systems).
General Automation: Control power supply for machine tools, packaging machinery, plastic molding equipment and printing machines.
FAQ
Q1: Red LED lights up after power-on with no output?
- Verify input voltage is within AC 85–264 V / DC 120–370 V range.
- Disconnect loads; if output recovers, overload or short-circuit occurs, inspect I/O modules and wiring.
- Check whether ambient temperature exceeds 70°C and cooling vents are clogged.
Q2: Low output voltage (＜23.5 V)?
- Trim potentiometer under full load to set output at 24.0 V±0.5 V.
- Confirm total load current does not exceed 4.2 A; reduce load or add redundant power supply if required.
- Check for insufficient input voltage below AC 100 V.
Q3: Can it be paralleled with power supplies from other brands?Not recommended. Redundant parallel connection is only allowed among identical 500PSM03a units. Different-brand power supplies feature inconsistent output characteristics, which may trigger circulating current and cause module damage.
Q4: How to handle humid or dusty operating environments?The module is pre-coated with conformal coating and rated IP20. It is recommended to equip the control cabinet with air conditioner/dehumidifier and perform regular dust cleaning.Amphenol
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