Description
Cristec DC-48-48/30PL DC-DC converter charger
Cristec DC-48-48/30PL is a DC POWER+ DC-DC converter charger rated for a 48VDC source, 48VDC output and 30A rated output current. Cristec’s 2026 technical catalogue identifies this exact 48-to-48V / 30A model. Correct selection depends on the complete DC charging system, including source capacity, destination battery bank, cable sizes, protection, mounting and charging settings.
48VDC to 48VDC, 30A configuration
The model code and current Cristec catalogue identify this version as 48VDC to 48VDC at 30A. It should be selected for a 48V source and 48V destination system where a 30A charging output is appropriate. If replacing existing equipment, identify the source and destination circuits, cable sizes, fusing and battery arrangement before removal. A mechanically similar unit should not be assumed to have the same electrical rating.
Battery bank and charging requirements
Where the output charges a 48V battery bank, identify battery chemistry, capacity and the manufacturer’s permitted charge voltages and currents. Lithium and lead-acid systems can require different charging profiles and protective arrangements. If a battery-management system is fitted, its current limits and charge-disconnect behaviour must also be considered. Review shore chargers, solar controllers and any other charging sources connected to the same bank so the complete system is configured consistently.
Cabling, isolation and circuit protection
A 30A output circuit requires suitably sized conductors and secure high-current terminations. Cable size must account for current, route length and acceptable voltage drop. Use the overcurrent protection and isolation specified for the installation, inspect existing lugs, fuse holders, busbars and isolators for corrosion or heat damage and protect positive conductors from accidental short circuit. Heavy cables should be supported so they do not impose mechanical load on charger terminals.
Mounting and service access
Install the converter in the orientation and environmental conditions specified by Cristec, with adequate ventilation and access to terminals, indicators and configuration controls. Avoid locations exposed to spray, excessive heat or mechanical damage. When replacing another converter, compare dimensions and cable-entry positions before altering the mounting surface. Keep the installation labelled so the source, destination and protective devices can be identified quickly during future service.
Commissioning checks
Before energising, verify input and output polarity, source voltage, destination-bank voltage, protective devices and terminal security. Confirm the battery configuration, then test the charger under realistic load. Measure voltage at the source, converter and destination bank to identify excessive cable drop, check for alarms or abnormal heating and verify operation with the vessel’s other charging sources. Record the final model, settings and wiring arrangement.
Documentation and related guidance
For current manufacturer information, see Cristec marine electrical products. The current DC POWER+ manual and Cristec catalogue should be the final references for ratings, charging settings, cable sizing, protection and mounting. F&C Marine also provides a Marine Electronics Knowledge Base covering practical vessel electrical and electronics installations.
Official manuals, datasheets and brochures
Related products
- Cristec DC-48-48/15PL – 48VDC to 48VDC – 15A
- Cristec DC-48-36/20PL – 48VDC-36VDC-20A
- Cristec DC-48-24/30PL – 48VDC-24VDC-30A
Related technical resources
Before ordering Cristec DC-48-48/30PL
Send F&C Marine the vessel type, source-system details, destination battery voltage, chemistry and capacity, existing charger model, approximate cable lengths and photographs of the installation. If the unit is being replaced because of a fault, include symptoms and measurements already taken. We can then confirm whether the 48VDC-to-48VDC 30A model is correctly matched and identify likely installation requirements before quotation.
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