Molded case circuit breaker MAD series
thermal-magneticcurrentphase

Molded case circuit breaker - MAD series - Lettel - thermal-magnetic / current / phase
Molded case circuit breaker - MAD series - Lettel - thermal-magnetic / current / phase
Molded case circuit breaker - MAD series - Lettel - thermal-magnetic / current / phase - image - 2
Molded case circuit breaker - MAD series - Lettel - thermal-magnetic / current / phase - image - 3
Molded case circuit breaker - MAD series - Lettel - thermal-magnetic / current / phase - image - 4
Molded case circuit breaker - MAD series - Lettel - thermal-magnetic / current / phase - image - 5
Molded case circuit breaker - MAD series - Lettel - thermal-magnetic / current / phase - image - 6
Molded case circuit breaker - MAD series - Lettel - thermal-magnetic / current / phase - image - 7
Molded case circuit breaker - MAD series - Lettel - thermal-magnetic / current / phase - image - 8
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Characteristics

Type
thermal-magnetic
Electrical characteristics
current, phase, three-phase
Operating mode
electric
Other characteristics
molded case, smart
Primary current

Max.: 250 A

Min.: 63 A

VAC

Max.: 270 V

Min.: 80 V

Description

All-in-one measurement solution integrated under the molded circuit breaker, the MAD range offers unique advantages in terms of installation simplicity, reduction of components, and maintenance risks: - Measurements: The unit allows complete analysis of an electrical circuit in three-phase or four-phase: - Instantaneous measurements: Single and compound voltages, current per phase and neutral, active, reactive, apparent power, frequency, power factor - Energy measurements: Active and reactive (positive and negative), apparent, 4-quadrant reactive - Quality: U and I imbalances, distortion rates, and harmonic content U and I up to the 31st order - Accuracy: Active energy measurement class 0.5 - Electrical: Auxiliary power supply 80 … 270 VAC - Integration: The housing connects directly to the output terminals of the 3 phases of the molded circuit breaker. It acts as an extension of the breaker. The housing dimensions allow perfect compatibility with the main manufacturers' circuit breakers of 63A, 125A, 160A, and 250A. - Communication: Modbus RTU via RS485 port - Inputs and outputs: The measurement unit is equipped with 2 digital inputs and 1 programmable relay output - Circuit control and alarms: The relay is programmable on reaching min or max thresholds of current, voltage, power, phase imbalance, etc., allowing: - to protect electrical circuits - to perform alarm functions in case of failure or inappropriate signal - to perform automatic load shedding in case of overload - Status feedback of electrical circuits: The 2 digital inputs allow monitoring the status of auxiliary circuits or devices and alert in case of failure or circuit break - Data recording: Energy and power indexes are recorded at a programmable frequency in 1-minute steps. Recorded data can be viewed via software and exported in .csv format - Supervision: Remote consultation of measurements via Modbus, on third-party software or the free provided software. For local consultation, flush-mount displays for cabinet doors are available as options. Offered in 2 different formats, they connect to the units via a single RJ12 cable - Cost reduction: - Component savings: Compared to a traditional installation, an integrated MAD measurement unit eliminates the need for: - External current transformers - Circuit breakers or fuse holders to protect voltage taps - Connection cables - Time saving: Faster installation due to fewer components - Maintenance reduction: The "all-in-one" design avoids failure risks on auxiliary components, connection cables, and connection points - Compliance: CE, RoHS, REACh - Applicable standards: IEC61557-12, GB/T 22264.7, IEC61326-1, IEC61010-1 - Associated products: Compatible with: - MAD-D72: 72×72 mm display - MAD-D96: 96×96 mm display - RJ12 cables for connecting the display to the measurement unit - Technical characteristics / specifications: - Integrated measurement unit for molded circuit breaker - Current ranges: 63A, 125A, 160A, 250A - Auxiliary power supply: 80–270 VAC - Communication: Modbus RTU (RS485) - 2 digital inputs, 1 programmable relay output - Active energy measurement class: 0.5 - Compliance: CE, RoHS, REACh - Standards: IEC61557-12, GB/T 22264.7, IEC61326-1, IEC61010-1
*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.