Description
The 500PSM03a 1MRB150038R power module belongs to the ABB RTU500 and AC800M series,providing critical low-voltage DC power supply for control systems.Its input voltage covers 36-312 V DC and is suitable for various bus environments.The output distribution is reasonable,with 5 V/16 A driving the main logic of the controller,12 V/3 A and-12 V/0.5 A supporting auxiliary and storage components,and 3.3 V/8 A supporting embedded interfaces and sensing devices.With its IEC255 C-2 kV surge protection capability,it can operate stably for a long time in high interference or industrial lightning environments.
The module size is approximately 16×16×12 cm,weighing only 0.53 kg,with a compact structure suitable for standard cabinet installation and supporting hot swapping.It is designed specifically for high reliability applications such as ships,power stations,petrochemical plants,and industrial control cabinets.Internally,a switch type voltage regulation design is adopted to ensure stable and ripple free output.At the same time,it has short-circuit,overcurrent,and over temperature protection functions to improve system safety.
Overseas supplier data shows that this module is an ABB original new product or certified refurbished part,supporting a 12-month warranty,with sufficient spare parts,suitable for engineering replacement and system expansion.

ABB 500PSM03a 1MRB150038R
Main features and advantages
Multi channel stabilized output
Supports 5 V/16 A,12 V/3 A,-12 V/0.5 A,3.3 V/8 A outputs-meeting the power requirements of controllers,storage,and interfaces.
High input tolerance design
The wide voltage range of 36-312 V DC is suitable for various power supply environments,and the system has high reliability.
Industrial grade surge protection
IEC255 C-2 kV anti-interference ensures stable power supply in harsh environments.
Lightweight and hot swappable
The module weighs only 0.53 kg and supports non-stop replacement,improving maintenance efficiency.
Compatible with AC800M/RTU500 systems
Original factory positioning,supporting power supply for RTU500/AC800M and other systems,easy to replace and upgrade.
Improve protection mechanisms
Built in overcurrent,short circuit,and over temperature protection,supporting power safety and automatic power-off.
technical specifications
Product model:500PSM03a 1MRB150038R0001
Manufacturer:ABB
Product type:DC Power Supply Module
Input voltage range:36-312 V DC
Output power:Total power of 100 W
Output voltage/current:5 V/16 A;12 V/3 A;‑12 V/0.5 A;3.3 V/8 A
Surge protection:IEC255 C-2 kV
Protection mechanism:overcurrent,short circuit,over temperature
Weight:0.53 kg
Size:~16×16×12 cm
Working temperature:-25°C to+70°C(typical industrial grade range)
Installation method:rack rail plugging+hot plugging
application area
The 500PSM03a power module is widely used in power plant RTU/PLC power supply,intelligent manufacturing control cabinets,power monitoring systems,petrochemical equipment,and process control units.Its multi-channel output capability meets the power requirements of various devices such as controller logic,cache,communication interfaces,etc;Wide voltage input and surge protection make it suitable for harsh power supply environments;Hot swappable design supports safe replacement of on-site device modules,ensuring uninterrupted system operation.

ABB 500PSM03a 1MRB150038R
Related products
500PSM03(old version):Same functionality but different batch numbers for different versions.
500CPU03 1HDF700003R5122:Central processing unit,working in conjunction with the power module.
07AC91 GJR525230R0101:ABB digital/analog I/O module.
500BIO01:I/O substrate,used for building modular systems.
07AC90:Auxiliary power supply or interface board module,interchangeable.
Installation and maintenance
Preparation before installation:Please disconnect the cabinet DC bus and remove the old power module first.Insert the new module until it is securely fastened,connect the input power cord,and connect the cabinet ground wire.After power restoration,check whether the output voltage and current are normal.
Maintenance suggestion:It is recommended to check the cleanliness of the module ventilation openings every 6 months to confirm stable and normal output.If there is an abnormal signal in the module,it can be powered off,unplugged,and replaced with a spare part.Supporting hot swappable design ensures uninterrupted system operation.



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