3-Phase Digital Ammeter 1–100A: Simultaneous real-time monitoring for your distribution board
When a three-phase circuit starts to underperform, load imbalance is often the first warning sign—and you will only spot it with the right equipment. This 1–100A digital three-phase ammeter provides real-time readings for each phase, eliminating the need for manual calculations or complex diagnostics. It clips directly onto your 35mm DIN rail in seconds and is ready for immediate use.
Note: This device is designed exclusively for three-phase AC electrical systems. Please verify compatibility with your installation before mounting.
Why choose this model? (Key Benefits):
- Simultaneous 3-phase monitoring — Features 3 independent LED displays, one for each phase (L1, L2, and L3), allowing you to view all data at a glance without manual switching.
- 1–100A range without external CT — Direct connection to phase wires; no external current transformers required for loads up to 100A.
- Class 1.0 Accuracy — With a maximum error rate of just 1%, it provides the precision needed for effective energy management and fault detection.
- AC 80–500V operating range — Fully compatible with standard 230/400V electrical grids and various industrial configurations.
- 35mm DIN rail mounting — Designed for quick, tool-free installation directly into your existing distribution board in under 2 minutes.
- Wide operating temperature — Stable performance in environments ranging from -20°C to +70°C, suitable for both standard and industrial technical cabinets.
- Compact design: 81 × 18 × 66 mm — Occupies only 18mm of rail space, leaving plenty of room for other essential modular components.
Performance and Technical Details
This unit measures current across a 3L+N configuration, making it an essential tool for identifying load imbalances where one phase may be drawing significantly more power than the others. The Class 1.0 accuracy ensures that your data is reliable for making informed maintenance decisions.
50/60Hz nominal frequency ensures complete compatibility with standard European power grids and imported equipment. The high-brightness LED displays remain clearly visible even in low-light conditions, a significant advantage for technical cabinets located in utility rooms or basements.
| Parameter | Specification |
|---|---|
| Display Type | Digital, 3 independent LED screens (one per phase) |
| Current Measurement Range | 1 – 100A (AC) |
| Nominal Voltage | AC 80 – 500V |
| Accuracy | Class 1.0 |
| Nominal Frequency | 50 / 60 Hz |
| Operating Temperature | -20°C ~ +70°C |
| Ingress Protection | IP20 |
| Dimensions (L × W × H) | 81 mm × 18 mm × 66 mm |
| Terminal Type | 3-phase (3L + N) |
| Mounting Type | 35mm DIN Rail |
Installation and Setup Guide
- Pre-installation check: Confirm that your grid voltage is within the 80–500V AC range and that the maximum load on any phase does not exceed 100A.
- DIN Rail Mounting: Simply clip the ammeter onto your 35mm DIN rail—no drilling or special tools required.
- Terminal Wiring: Connect the L1, L2, L3 phase wires and the neutral (N) wire to the terminals as indicated in the wiring diagram.
- Power Up: Apply power to the system and verify that all three LED displays show stable readings for each phase.
- Continuous Monitoring: Observe the real-time values. Significant discrepancies between phases may indicate a load imbalance or a fault in your electrical installation.
Package Contents
- 1 × 3-Phase Digital Ammeter (1–100A, AC 80–500V, 35mm DIN rail mount)
Frequently Asked Questions
Can this be used on single-phase networks?
No. This device is engineered specifically for three-phase systems with a neutral wire. For single-phase installations, a dedicated single-channel ammeter is required.
Do I need an external current transformer (CT)?
No, provided the current on each phase remains under 100A. The unit connects directly to the phase wires.
Does it display all three phases simultaneously?
Yes. The three independent LED displays show current for L1, L2, and L3 at the same time, so you never have to toggle between readings.
Where can I install this? Is the IP20 rating waterproof?
IP20 provides protection against solid objects larger than 12.5mm but does not offer protection against water or moisture. This device must be installed inside an enclosed electrical distribution board in a dry, controlled environment.
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