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MDU4000 – Marine 4000A Main Distribution Switchboard
The MDU4000 is a containerised 4,000 A main distribution switchboard for temporary vessel power distribution. Designed for short-notice vessel mobilisation and open-deck installation, it provides a flexible distribution point for offshore construction and project-support applications.
- Application Temporary vessel power distribution
- Operating voltage 3-phase, 415–690 V AC
- Main bus 4,000 A; 100 kA for 1 second
- Incoming circuits 2 × 2,500 A ACB incomers
- Outgoing circuits ACB, MCCB and MCB distribution
- Certification DNV 2.7-1 / ISO 10855-3
Containerised Marine Power Distribution for Temporary Hire
The MDU4000 provides a high-current main distribution point for temporary power requirements on vessels. Its containerised arrangement is suited to open-deck installation and supports short-notice mobilisation.
The switchboard includes two 2,500 A ACB incomers and an outgoing arrangement incorporating ACB, MCCB and MCB distribution. Circuit-breaker sizes can be reconfigured to meet changing equipment requirements across different project configurations.
Built for Flexible Marine Hire
- Suitable for open-deck vessel installation
- 4,000 A main bus, rated at 100 kA for 1 second.
- Two 2,500 A ACB incomers.
- Configurable ACB, MCCB and MCB outgoing distribution.
- Roxtec cable penetration system.
- Spares package included in the hire.
- Certified to DNV 2.7-1 / ISO 10855-3
Flexible distribution for changing project requirements
The MDU4000's circuit-breaker sizes can be reconfigured to suit different temporary electrical distribution arrangements.
MDU4000 Technical Specifications
Detailed electrical ratings, circuit configuration and physical dimensions for the MDU4000 marine distribution switchboard.
Equipment Data
- Model MDU4000
- Description Marine 4000A Main Distribution Switchboard
- Manufacturer MJR Power & Automation
- Rated voltage 3-phase, 415–690 V AC
- Main bus 4,000 A; 100 kA for 1 second
- Frequency 50/60 Hz
- Incoming 2 × 2,500 A ACB incomers
- Outgoing 1 1 × 2,500 A ACB
- Outgoing 2 1 × 1,600 A configurable MCCB distribution
- Outgoing 3 1 × 250 A configurable MCB distribution
- Cable entry Roxtec penetrations
- Weight 4,500 kg
- Dimensions 10 ft × 8 ft × 8 ft 6 in
- Certification DNV 2.7-1 / ISO 10855-3
- Spares Spares package included in hire
Typical Applications for the MDU4000
The MDU4000 is intended for temporary power distribution during vessel mobilisation, offshore construction and project-support work.
- Vessel Mobilisation A temporary main distribution point for high-current electrical requirements during short-notice vessel mobilisation.
- Offshore Construction Containerised power distribution equipment for temporary electrical arrangements supporting offshore construction projects.
- Project Support A flexible switchboard arrangement for projects where distribution requirements or circuit-breaker configurations may change.
The MDU4000 is intended for temporary vessel power distribution, including open-deck installations. Contact MJR to discuss operating voltage, incoming and outgoing circuit requirements, the project location and proposed hire dates.
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Request an Equipment Hire Quote
Tell us what equipment you need, your project location, required hire period and technical requirements. The MJR team will review your request and provide a suitable hire solution with availability, pricing and delivery details.
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