AC circuit breaker MAD series

three-phasedigitalelectronically controlled

Summary
All-in-one metering solution integrated under molded-case circuit breakers, MAD series. Enclosure connects directly to the three-phase output terminals of the breaker; designed to reduce components, installation time and maintenance.

Measurements

• Instantaneous measurements: line and phase voltages, per-phase and neutral currents, active/reactive/apparent power, frequency, power factor.
• Energy measurements: active and reactive energies (positive and negative), apparent energy, 4-quadrant reactive energy.
• Power quality: voltage and current imbalances, distortion rates and voltage/current harmonic content up to 31st order.

Accuracy

• Active energy measurement: class 0.5.

Power supply

• Auxiliary supply: 80 … 270 V AC.

Mechanical integration

• Connects directly to the output terminals of molded-case circuit breakers and positions as an extension of the breaker.
• Dimensions compatible with major manufacturers' breakers for ratings 63A, 125A, 160A and 250A.

Communication

• Modbus RTU via RS485 port.

Inputs and outputs

• 2 digital inputs.
• 1 programmable relay output.

Features

• Programmable relay on thresholds (current, voltage, power, imbalance, etc.) for protection, alarms and automatic shedding.
• Circuit status reporting via digital inputs (outage/fault detection).
• Recording of energy and power indexes with programmable interval (1-minute step) and CSV export of logged data.
• Remote supervision via Modbus; local reading possible using optional flush-mount displays (RJ12 connection).

Benefits

• Cost reduction: avoids external current transformers, additional protections and linking wiring.
• Time saving: faster installation thanks to fewer components.
• Maintenance reduction: all-in-one architecture limits failure points (external components, cables, connections).

Standards and certifications

• Compliances: CE, RoHS, REACh.
• Applicable standards: IEC61557-12, GB/T 22264.7, IEC61326-1, IEC61010-1.

Related products and options

• Flush-mount displays for local reading: 72×72 mm and 96×96 mm formats (RJ12 connection).
• RJ12 cables for display ↔ main unit connection.

Variants and order codes
Order code | Max current | Stock status
MAD-63A1-DIR | 63A | instock
MAD-125A1-DIR | 125A | instock
MAD-125A2-DIR | 125A | instock
MAD-160A1-DIR | 160A | instock
MAD-250A1-DIR | 250A | instock

Resources (available documents)

• MAD series overview (product documentation)
• Installation, programming and user manual (product manual)
• Modbus communication protocol (technical documentation)

Technical specifications

• Type: integrated metering unit for molded-case circuit breakers (MAD series).
• Measurements: voltages, currents, powers, energies, frequency, power factor, harmonics up to 31st order.
• Active energy accuracy: class 0.5.
• Auxiliary supply: 80 – 270 V AC.
• Communication interface: Modbus RTU (RS485).
• I/O: 2 digital inputs, 1 programmable relay output.
• Recording: energy indexes and powers with programmable step (1 minute), CSV export.
• Mechanical compatibility: breakers rated 63A / 125A / 160A / 250A.
• Optional local displays: 72×72 and 96×96 formats (RJ12 link).
• Compliances: CE, RoHS, REACh; standards IEC61557-12, GB/T 22264.7, IEC61326-1, IEC61010-1.