ABSOPULSE MOX12-P3509 | DC-DC Power Module, 80026-173-23

Description

Key Technical Specifications

Product Introduction

Wide-input DC-DC converters are the unsung heroes of industrial power distribution — they sit between the raw DC bus and sensitive electronics, absorbing voltage swings that would otherwise fry a controller. The ABSOPULSE MOX12-P3509 (80026-173-23) is exactly that kind of workhorse. It accepts a broad 42-258VDC input and delivers multiple regulated outputs, making it suitable for applications where a single DC source must feed logic, analog, and communication circuits simultaneously.

What sets this module apart is its multi-rail architecture. Instead of stacking separate converters for ±5V, ±15V, +12V, and +24V, the MOX12-P3509 consolidates them into one unit. That reduces panel space, simplifies wiring, and cuts the number of potential failure points. The 42-258VDC input range covers most industrial and rail DC bus standards without needing a pre-regulator. Bottom line — if your system runs on DC and needs clean, isolated rails, this module does the heavy lifting in one package.

ABSOLUTE MOX12-P3509 B 80026-173-23

QA/QC Transparency SOP

1. Intake & Origin Verification — Confirm part number 80026-173-23 and revision (P3509 vs P3509B). Inspect for physical damage, corrosion, burnt components, or rework marks. Verify nameplate matches expected input/output configuration.
2. Live Functional Testing — Apply regulated DC input within the 42-258VDC range on a programmable DC supply. Measure each output rail (COM1-COM5) under no-load and loaded conditions using a Fluke multimeter or electronic load. Confirm voltage regulation within ±5% tolerance.
3. Electrical Parameter Tests — Perform insulation resistance test between input and output grounds. Check for short circuits on each output rail. Verify input current draw does not exceed 8A at minimum input voltage under full load.
4. Firmware/Config Verification — This is an analog power module with no firmware. However, verify that any onboard trim pots or configuration jumpers match the expected output settings. Document any non-standard configurations.
5. Final QC & Anti-Static Packaging — Record all measured output voltages and load test results. Package in anti-static shielding bag with desiccant. Include test report and nameplate photo for traceability.

Field Engineer Gotchas

• Output Configuration Mismatch — ABSOPULSE often builds MOX12 modules to custom output specs. Two units with the same 80026-173-23 code may have different COM rail assignments. Solution: compare the nameplate output table against your system requirements before installation. Don’t assume pinout compatibility.
• Input Voltage Polarity — DC-DC modules are unforgiving about reverse polarity. A reversed input can destroy the internal MOSFETs instantly. Solution: verify polarity with a multimeter before energizing. Add a reverse-polarity diode or fuse if the source is uncertain.
• Load Sequencing Issues — Multi-rail supplies can have startup sequencing dependencies. If the +5V rail is needed before +24V for proper controller boot, verify the module’s internal sequencing matches your system’s requirements. Solution: check the OEM datasheet or measure ramp-up timing with an oscilloscope.
• Thermal Derating at High Input — At 258VDC input, efficiency drops and heat generation increases. Solution: ensure adequate airflow or heatsinking. A module running hot in a sealed enclosure will fail prematurely — this is not a “set and forget” install.
• Ground Reference Conflicts — Multiple isolated outputs can create ground loop issues if tied together incorrectly downstream. Solution: understand which outputs share a common reference and which are truly isolated before connecting loads.

ABSOLUTE MOX12-P3509 B 80026-173-23

Application Scenarios

• Railway signaling power distribution — A wayside control cabinet receives 110VDC from the track circuit and needs ±5V for logic boards, +24V for relay coils, and +15V for analog sensors. The MOX12-P3509 consolidates all three rails from a single DC source.
• Telecom base station backup power — During AC outage, a 48VDC battery bank feeds the MOX12-P3509, which generates the multiple voltages needed by baseband units, RF modules, and monitoring circuits.
• Industrial process control retrofit — An aging control system with a failed proprietary power supply is retrofitted with the -P3509, matching the original output rails without redesigning the entire backplane.

FAQ

Is this an ABB product?
No. Despite some third-party listings conflating it with ABB S800 I/O, is manufactured by ABSOPULSE, a Canadian power supply specialist.

Can I substitute this with a generic DC-DC converter?
Not easily. The multi-rail output configuration is custom-built. A generic single-output converter would require multiple units and additional wiring. Verify your exact output requirements before considering alternatives.

What happens if one output rail is overloaded?
Typical behavior is shutdown or current limiting on the affected rail, potentially affecting other outputs depending on internal topology. Solution: fuse each output rail independently at the load side.

Is hot-swapping supported?
No. This is a power supply module, not a field-replaceable I/O card. Power down the system before replacement.

How do I verify the output configuration before installation?
Check the nameplate label for the COM1-COM5 output table. If the label is missing or illegible, bench-test with a DC supply and multimeter before connecting to live equipment.

What is the typical MTBF?
ABSOPULSE does not publish a universal MTBF for the series. Actual reliability depends on operating temperature, load profile, and input voltage stress. Expect 100,000+ hours under nominal conditions, but verify with the OEM for your specific configuration.

Can this module handle regenerative energy from the DC bus?
No. is a unidirectional converter. If your DC bus experiences reverse current (e.g., from motor regeneration), add external protection.