Power Supply Role

Auxiliary DC Matching

The 1MRK002239-BBR03 belongs to the 90–250 VDC PSM execution. The station auxiliary DC range must therefore be checked before replacement.

IED Compatibility

The module is intended for compatible ABB protection and control IED configurations. The receiving equipment and rack arrangement should be matched before ordering.

Execution Control

The final R03 designation is part of the complete product identity. For a maintenance replacement, the full marking should correspond with the installed module.

Where the PSM Fits

In a compatible protection and control IED, the PSM occupies the power-supply layer rather than the measurement or communication layer. Its purpose is therefore tied directly to the auxiliary supply architecture of the receiving equipment.

For maintenance teams, this makes the complete ordering identity especially important: a visually similar power module with a different supply class or execution should not be treated as an automatic substitute.

Can 1MRK002239-BBR03 replace any 1MRK002239 PSM?

No. The family contains different auxiliary-supply variants. The 1MRK002239-AB variant is associated with 24–60 VDC, while the 1MRK002239-BB variant is the 90–250 VDC version. A replacement should match the installed supply class and complete execution.

What should be checked before ordering 1MRK002239-BBR03?

Check the complete 1MRK002239-BBR03 marking, the 90–250 VDC auxiliary supply configuration, receiving IED family, installed rack or module position, connector arrangement and the existing hardware execution.

Why does the R03 designation matter on 1MRK002239-BBR03?

The R03 suffix forms part of the complete ordering identity. When replacing an installed module, matching the full reference reduces the risk of selecting a different hardware execution within the same PSM family.

How does 1MRK002239-BBR03 relate to ABB Relion protection equipment?

The 1MRK002239 PSM family is used as a power-supply selection within compatible ABB protection and control IED configurations. Relion 670-series ordering material identifies the 90–250 VDC 1MRK002239-BB option alongside the 24–60 VDC 1MRK002239-AB option.

What should a buyer provide when requesting 1MRK002239-BBR03?

For an exact replacement enquiry, provide the complete part number, required quantity, delivery destination, required date and the receiving machine or protection system. A clear photograph of the installed label can also help confirm the complete hardware identity.