Description
At-A-Glance Executive Brief
- Model: 1MRB150038R0001 (500PSM03)
- Brand: ABB
- Part Type: Rack mount power supply module
- Lifecycle status: OEM obsolescent, stocked for utility substation brownfield RTU560 sites
- System compatibility: ABB RTU560 substation automation subracks
- Weight: 0.53 kg
Technical Introduction
RTU560 subracks stop collecting field telemetry when this power supply fails, isolating substation data from central SCADA. This plug-in module accepts a wide 24–60 VDC control supply and generates two regulated DC rails to feed the RTU backplane. It delivers 15 VDC for internal logic circuits and 24 VDC for peripheral I/O hardware, with total rated power of 44.5W. Built-in overvoltage, overcurrent and short-circuit protection isolates faults so remaining rack hardware avoids damage. Utility sites hold spare units to limit downtime while evaluating legacy RTU migration.
- Best Suited For
- HV substation RTU560 automation racks
- Power utility telemetry and I/O subracks
- Direct drop-in replacement without backplane wiring modification
Core Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 1MRB150038R0001 (500PSM03) |
| Input Voltage | 24–60 VDC (-20% / +15% tolerance) |
| Output 1 | 15 VDC (internal logic bus) |
| Output 2 | 24 VDC (peripheral power) |
| Max Rated Power | 44.5 W |
| Form Factor | Plug-in for RTU560 subrack |
| Protection | Overvoltage, overcurrent, short-circuit |
| Operating Temperature | 0°C to +50°C |
| Weight | 0.53 kg |
| Environmental Details | Please refer to the OEM datasheet for complete environmental tolerances. |
Field Engineer’s Tech Notes
- Calculate total backplane load before installation. If combined draw from all RTU560 I/O and communication cards exceeds 44.5W, the supply will cycle on overcurrent protection.
- Electrolytic capacitors degrade with years of continuous operation. Used units kept in storage with no power applied for multiple years have higher risk of inrush failure at commissioning.
Adaptive QA & Testing Protocol
Each unit is bench tested inside a matching RTU560 subrack fixture. We sweep DC input across the full 24–60VDC range and measure regulation on both 15VDC and 24VDC outputs under partial and full load. We trigger short-circuit conditions to confirm protective shutdown and verify recovery after fault removal. Capacitor ESR is checked to flag aged components. Full test reports or bench test video clips are available upon request.
Buyer’s FAQ
Q: Is 1MRB150038R0001 the same as 500PSM03? A: Yes. 500PSM03 is the ABB product family name, 1MRB150038R0001 is the full order part number, fully drop-in compatible for RTU560 racks.
Q: What warranty applies to refurbished and NSFP 1MRB150038R0001? A: Refurbished and NSFP units carry a 12-month hardware warranty. Coverage excludes damage from overloaded backplane or incorrect input supply voltage.
Q: What lead time should I plan for shipment? A: Stocked units ship in 3–7 business days. If inventory runs low, lead time increases while we source available surplus stock.
Q: Can I hot-swap this power supply while the RTU560 rack remains live? A: Check your specific subrack configuration. Many RTU560 cabinets require de-energizing the control supply before module removal to prevent backplane transients.
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