Overview
ADL400N-UL is a UL/cULus certified three-phase DIN-rail energy meter with external split-core CTs.
Certified to UL 61010-1 (80188894), 110-277/190-480V, Class B accuracy with 50ms response.
For North American C&I PV and storage.
Highlight
UL Certification
- UL 61010-1, CSA C22.2
- CAT III, Class II
- L-N:110-277V, L-L:190-480V
- Pollution Degree 2
3-Phase CT Options
- 80A, 120A, 200A, 300A
- 3 split-core CTs
- -40℃ to +70℃
- 50/60 Hz
- 4-module DIN-rail
Full Measurement
- Phase/Line voltage
- 3-phase current
- Per-phase P, Q, S, PF
- Total power, F
- 50ms fast response
Standard Outputs
- RS485 Modbus RTU
- Pulse output
- ≤2W low power
- Indoor installation
- ≤2000m altitude
Function
| Measurement | Metering | Extended Functions |
| Phase/Line Voltages (U) | Total Active Energy | RS485 Communication with Modbus-RTU |
| Phase Currents (I) | Forward Active Energy | Field-Programmable Parameters (CT Ratio, Comm. Address, Baud Rate, etc.) |
| Per-phase/Total Active Power (P) | Reverse Active Energy | Active Pulse Output (LED Indication) |
| Per-phase/Total Reactive Power (Q) | Forward Reactive Energy | High/Low-Speed Dual Register Sets for Optimized Data Reading |
| Per-phase/Total Apparent Power (S) | Reverse Reactive Energy | Password Protection Against Unauthorized Changes |
| Per-phase/Total Power Factor (PF) | 4-Quadrant Reactive Energy | Backlight Control |
| Frequency (F) | Per-phase Energy | — |
Specification
| Item | Parameter |
| Model Series | ADL400N-UL (3-Phase 4-Wire, 3-Phase 3-Wire, Single-Phase 3-Wire configurable) |
| Certification | UL/cULus certified, Certificate No.: 80188894; compliant with UL 61010-1, CSA C22.2 No.61010-1 |
| Voltage Rating | L-N: 110-277V AC, L-L: 190-480V AC |
| Current Ratings | External CT Operated: 80A, 120A, 200A, 300A (1 per phase, total 3) |
| Frequency | 50/60 Hz |
| Measurement Category | CAT III |
| Pollution Degree | 2 |
| Protection Class | Class II (Double Insulation) |
| Operating Temperature | -40℃ ~ +70℃ |
| Storage Temperature | -40℃ ~ +70℃ |
| Relative Humidity | ≤95% (non-condensing) |
| Altitude | ≤2000m |
| Installation Environment | Indoor |
| Power Consumption | ≤2W |
| Communication | RS485 with Modbus-RTU protocol |
| Comm. Parameters | Address 1~247, baud rate 1200~38400bps programmable |
| Display | Segmented LCD, programmable via buttons |
| Dimensions | Meter: approx. 90mm × 72mm × 65mm (4 modules) |
| Mounting | Meter: 35mm standard DIN rail; CTs: Clamped onto primary cables |
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FAQ
ADL400N-UL supports multiple wiring modes, configurable via front panel buttons:
3-Phase 4-Wire (3P4L): For star connection, requires N wire
3-Phase 3-Wire (3P3L): For delta connection or balanced loads, no N wire required
Single-Phase 3-Wire: For split-phase systems common in North America
Yes, they are fully interchangeable. Both products use the exact same CT series (80A/26.6mA, 120A/40mA, 200A/66.6mA, 300A/100mA). This means if you use both single-phase and three-phase meters in a project, you can standardize CT spare parts and reduce inventory variety. The difference is quantity: ADL200N-UL comes with 1 CT per unit, ADL400N-UL comes with 3 CTs per unit.
Summary
ADL400N-UL delivers UL/cULus safety certification, 50ms fast response, and wide voltage range for North America. It provides reliable anti-backfeed and energy monitoring for US and Canadian commercial applications.
