OMM7DC New Energy DC MCCB for High-Voltage DC Protection
OMM7DC is a new energy DC molded case circuit breaker series for DC distribution systems, photovoltaic applications, battery-related power systems and other direct-current protection projects. It is positioned for buyers who need DC-rated MCCB selection by voltage level, frame current, poles and breaking capacity.
DC circuit protection should not be selected in the same way as AC MCCB sourcing. Before quotation, buyers should confirm DC voltage, current range, pole configuration, application scenario, installation environment and required documentation. OOHMAGE supports model confirmation, technical document communication and export-order coordination according to confirmed project requirements.
Product Highlights
- DC-rated protection: suitable for direct-current applications where AC MCCB substitution should not be assumed.
- New energy positioning: useful for PV, battery, combiner output and DC distribution discussions.
- Frame-current selection: helps buyers match 320A to higher-frame project requirements.
- Project quotation support: voltage, poles, current and breaking capacity can be confirmed before pricing.
Recommended Applications
Choose OMM7DC when the system is a DC application and the project requires MCCB-level interruption and isolation capability. For AC feeder protection, compare OMM6, OMM6E, OMM6EY or OMM6RT instead.
Technical Specifications
| New Energy DC Circuit Breaker OMM7DC | 320 | 400 | 630 | 1600 | ||||
| Frame current In | 100A~320A | 225A~400A | 400A~630A | 800A~1600A | ||||
| Number of poles | 2P | 3P | 4P | |||||
| Rated working voltage Ue | DC750V、C1000V、DC1200V、DC1500V | |||||||
| Rated insulation voltage Ui | 1600V | |||||||
| Rated impulse withstand voltage Uimp | 12kV | |||||||
| Ics=lcu | DC750V | 85kA | 85kA | 85kA | 50kA | |||
| DC1000V | 50kA | 50kA | 50kA | 30kA | ||||
| DC1200V | 35KA | 35KA | 35kA | 15KA | ||||
| DC1500V | 20kA | 20kA | 20kA | 10kA | ||||
| Arc distance (mm) | 50/0(with arc-extinguishing cover) | 100 | ||||||
| Basic dimension W×L×H | 90*215*136 | 110*275*181.5 | 110*275*181.5 | 210*340*244 | 280*340*244 | |||
Quotation Checklist
- DC voltage level
- Frame current and rated current
- 2P / 3P / 4P requirement
- Breaking capacity and application scenario
- PV, battery or DC distribution use case
- Quantity, packaging and required documents
Common Questions About OMM7DC
Can OMM7DC be used for solar or battery-related projects?
It can be discussed for selected PV, battery and DC distribution projects when voltage, current, poles and breaking capacity are confirmed.
Can I use an AC MCCB instead of a DC MCCB?
No assumption should be made. DC interruption requirements differ from AC systems, so a DC-rated MCCB should be confirmed for DC projects.
OMM7DC-320 DC MCCB Selection and Applications
OMM7DC-320 DC MCCB is designed for photovoltaic, energy-storage and other high-voltage DC distribution systems. Correct selection should be based on DC voltage, current, pole configuration, breaking capacity and polarity requirements. OOHMAGE supplies project quantities with model confirmation, technical documentation support and one-year warranty terms.
- Application fit: Confirm the electrical system and installation environment before final model selection.
- Documentation: CE and ISO-related documentation is available for the promoted product range, subject to exact model confirmation.
- Quality control: Products are checked according to the applicable inspection process before shipment.
Common Questions
Is it suitable for every DC system?
Selection must match the actual DC voltage, fault current, wiring method and environmental conditions.
What should be included in an inquiry?
Provide the maximum operating voltage, rated current, poles, application, quantity and required documentation.
Compare the complete OOHMAGE MCCB range, or send your ratings, quantity and application to info@oohmage.com for model confirmation and a quotation.
Request Quote
Tell us your specifications, quantity, or application scenario and we will reply with a tailored quote.
