Overview
AMB100-A is an AC monitoring device for intelligent busbar systems, designed for real-time monitoring of incoming sections. It integrates 3-phase electrical measurements, 2-63 harmonics, 8 temperature channels, 1 leakage current, 2 DI and 2 DO. Powered by signal or external supply, it communicates via RS485/Modbus-RTU or LORA with daisy-chain. DIN35 rail mounted with AKH split-core CTs, ideal for data centres, commercial buildings, and industrial distribution.
Highlight
Comprehensive Power Monitoring
- 3-phase voltage & current
- 2-63 harmonic analysis
- Leakage current up to 1A
- Accuracy: 0.2 class (V/I)
- Active/reactive energy
Multi-channel Temperature Sensing
- 8 NTC sensor inputs
- Range –20…150°C, ±1°C
- Colour-coded for phase distinction
- Real-time over-temp alarm
- Sensor lengths 2m / 4m
Flexible Communication
- RS485/Modbus-RTU or LORA
- 2 RJ45 ports (in/out)
- Daisy-chain up to 80 nodes
- LORA with 2m antenna
- Default baud 9600, adjustable
Easy Installation
- DIN35 rail mounting
- Split-core CTs included
- Signal or auxiliary power
- Compact size 85×85×62mm
- IP20 protection
Function
| Voltage & Current Measurement | • 3-phase phase voltage & line voltage, 3-phase current• Range: ±20% of nominal, overload 1.2× continuous• Accuracy: 0.2 class• Frequency measurement: 45～65 Hz• Supports various CT ratios (5A/2.5mA, 100A/20mA, 400A/100mA, 600A/100mA) |
| Harmonic Analysis | • 2nd to 63rd harmonic content for voltage and current• Total harmonic distortion (THD) for each phase• Resolution: 0.01% |
| Temperature Monitoring | • 8 NTC sensor inputs (R25=50kΩ, B=4150)• Measurement range: –20℃…+150℃, accuracy ±1℃• Sensor tip sizes: Ø12mm, Ø8mm, Ø6mm cylinder• Cable length: 2m or 4m, colour-coded for phases• Real-time over-temperature / under-temperature alarm |
| Humidity Monitoring | • Built-in humidity sensor inside the enclosure• Range: 0～100% RH, resolution 0.10%• Can be used for environmental compensation or alarm |
| Leakage Current Monitoring | • 1-channel leakage current measurement• Range: 0～1A• Over-leakage alarm with adjustable threshold |
| Neutral–to–Earth Voltage Monitoring | • Measures voltage between neutral and earth• Range: 0～500V (typical)• Alarm on over-voltage |
| Digital Inputs | • 2 dry-contact digital inputs• Can be configured for alarm or status monitoring• Adjustable debounce filter• Supports both normally open and normally close types |
| Digital Outputs | • 2 relay outputs• Contact capacity: 3A/30VDC, 3A/250VAC• Configurable as remote control or alarm output• Can be controlled via Modbus |
| Alarm Function | • Supports over-voltage, under-voltage, over-current, under-current, over-power, frequency deviation, over-temperature, under-temperature, over-leakage, etc.• Each alarm independently enable/disable and threshold setting• Alarm delay adjustable (0.1s resolution)• Buzzer on-board, can be remotely silenced• Alarm status readable via communication |
| Communication | • RS485/Modbus-RTU protocol• Two RJ45 ports (one in, one out) for daisy-chain• Default baud rate 9600, adjustable to 1200, 2400, 4800, 19200, 38400• Optional LORA wireless (506.5MHz) with external antenna• Works with AMB10/AMB10L-72 display or ATC600 receiver• Supports up to 80 devices in one network |
| Data Recording | • Monthly energy data for last 12 months (by phase)• Current year and previous year energy• Maximum demand values with timestamp• Clear energy/demand via Modbus command |
Show More
Specification
| Parameter | Value |
| Measurement | Voltage, current, frequency, active/reactive power, power factor, active/reactive energy, 2-63 harmonics, temperature, leakage current |
| Voltage | 3×220/380VAC nominal, ±20% range, 1.2× continuous overload |
| Current | Via CT: 5A/2.5mA, 100A/20mA, 400A/100mA, 600A/100mA; range 1%～120% |
| Frequency | 45～65 Hz |
| Accuracy | Voltage/Current: 0.2 class; Active power/energy: 0.5 class; Reactive power/energy: 1 class; Temperature: ±1℃ |
| Auxiliary Power | AMB100-A(/W): signal powered; AMB100-A(/W)-P1: independent AC/DC power (follows bus voltage) |
| Temperature Input | 8 channels, NTC R25=50k, –20…150℃, accuracy ±1℃ |
| Leakage Current | 0～1A |
| Digital Inputs | 2 dry contacts |
| Digital Outputs | 2 relays, 3A/30VDC, 3A/250VAC |
| Communication | RS485/Modbus-RTU (2 RJ45 ports) or LORA wireless (506.5MHz) |
| Mounting | DIN35 rail |
| Protection Grade | IP20 |
| Operating Temp. | –20℃…+60℃ |
| Storage Temp. | –25℃…+70℃ |
| Humidity | ≤93% RH (non-condensing) |
| Altitude | ≤2500m |
| Insulation Resistance | ≥100MΩ (all terminals to case) |
| Dielectric Strength | AC 2kV 1min between power/input/output/communication |
| EMC Compatibility | Level 4 for ESD, fast transient, surge; level 3 for RF field |
Show More
FAQ
AMB100-A(/W) is signal-powered, drawing energy from the measured circuit. For independent auxiliary power, choose AMB100-A(/W)-P1 with external AC/DC supply.
AMB100-A supports 8 NTC sensors (R25=50k, B=4150). Tip sizes: Ø12mm, Ø8mm, and Ø6mm cylinder; cable lengths 2m or 4m; colour-coded for phase identification.
Units are daisy-chained via RJ45 ports (RS485 I to RS485 II) using Modbus-RTU protocol, and finally connected to an AMB10 display or touch screen. RS485 distance up to 1200m; LORA range depends on site conditions.
All alarm thresholds (over-voltage, under-current, temperature, etc.) can be read and modified via Modbus communication. Alarm status can be queried in real time.
Yes. It stores the last 12 months of phase-specific active energy, as well as current and previous year energy, facilitating energy analysis.
Summary
The AMB100-A combines full electrical measurement, harmonic analysis, and multi-channel temperature monitoring in one compact unit. Its signal-powered option eliminates external wiring, while RS485 daisy-chain or LORA supports flexible networking. Configurable alarms provide early warning of overloads and insulation faults, ensuring power continuity. Easy installation and maintenance make it a cost-effective choice for intelligent busway monitoring.
