Designed for PV projects with strict grid stability and safety requirements, our Smart MCCB delivers rapid fault isolation and reliable grid interconnection.
TDK3ELG is installed after the inverter on AC 400 V circuits at inverter outlets and grid-connection points. DC-side protection and the grid-interface relay remain separate parts of the PV system.
This placement protects the inverter AC output and supports selective LV coordination without using an AC MCCB in the PV string or DC combiner circuit.
TDK3ELG has Ui = 1000 V insulation voltage, but its rated operating voltage is AC 400 V. Anti-islanding detection and grid permission remain with the inverter or external grid protection.
Recover power quickly against grid surges and lightning faults
Grid fluctuation and lightning easily trigger PV system trips. TDK3ELG executes controlled reclosing after an adjustable delay of 20–60 seconds once external grid-protection and inverter-readiness conditions permit it.
Fault → Trip → Stabilization Delay → Controlled Reclosing
Full-station centralized monitoring for efficient O&M
All models support RS485 Modbus; Ethernet or carrier communication is optional. Compatible with PV monitoring and SCADA platforms to view voltage, current, power and fault alerts via a central dashboard.
Complete protection customized for photovoltaic stations
Adopt PV-dedicated AC-side protection to secure distributed grid connection and leakage control.
Meet high insulation standards for main grid points with multi-layer protection coordination.
Integrate grid-side protection, auto reclose and metering to fit complex operating conditions.
PV-optimized AC 400 V design with Ui = 1000 V insulation, leakage protection and auto reclosing. Best for inverter outlets, grid-connection points and distributed solar systems.
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Leakage and auto reclosing for general PV branch circuits. Best for secondary AC distribution loops.
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Flagship all-in-one: metering, leakage, reclosing and hot-swappable modules. Best for complex PV energy storage and large central stations.
View Details| Smart MCCB Integrated Solution | Comparison Criteria | Traditional Setup |
|---|---|---|
| TDK3ELG with PV-focused AC protection and Ui 1000 V insulation | PV Adaptability | Generic AC breakers without PV protection |
| Auto reclose within 20–60s | Fault Recovery | Manual site reset, long power loss |
| Full remote real-time data via communication | O&M Visibility | Only on-site manual inspection |
| Harmonic monitoring on selected metering models | Harmonic Control | No harmonic monitoring module |
| All-in-one, saves cabinet and wiring space | System Cost | Multiple separate units |
TDK3ELG is positioned for PV AC-side protection at AC 400 V and provides Ui = 1000 V insulation voltage, leakage protection, RS485, and automatic reclosing. Anti-islanding detection and grid permission must be supplied by the inverter or external grid protection.
Yes. The same AC-side protection logic can be matched to rooftop inverters and larger plant connection points according to current rating, breaking capacity, and coordination settings.
Communication-enabled models push breaker status, events, and alarms to the plant platform, cutting field inspection time for remote stations.
All units support RS485 Modbus with optional carrier communication. A gateway provides the boundary to Ethernet and mainstream PV monitoring or SCADA platforms.
Reclosing is attempted only for approved circuits after external grid-protection and inverter-readiness checks. Transient events may restore; permanent short circuits remain open for inspection.
Selective AC protection, event data, and coordinated reconnection support the electrical design. Final grid-code compliance depends on the complete PV system, inverter settings, and project interconnection study.
Provide inverter model, grid voltage, project scale and certification requirements; our electrical engineers will issue a tailored MCCB BOM.
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