Advanced Protection → Proven Reliability
The NewElec MA-Relay is engineered to protect your motors from the most common and costly causes of failure. Designed for today’s industrial plants, it delivers intelligent overload protection, fault diagnostics, and communication-ready control for complete peace of mind.
Common failures in mining MCCs
Stall/locked-rotor, dry-run/jam, phase loss/unbalance in Mining MCCs.
How MA Relay helps
Start supervision, thermal model, configurable trips, under/overload logic.
Measured outcomes
Fewer nuisance trips, faster diagnosis, improved uptime.
Key Features & Why They Matter
Across mining, water treatment, and manufacturing, downtime costs can exceed R2 million per hour. Common failures such as overloading, phase imbalance, or earth faults often go unnoticed until it’s too late. The MA-Relay solves this with built-in smart protection features that act before your system fails.
Overload Protection
Unbalanced Current & Phase Loss
Load Loss Protection
Earth Leakage & Earth Fault Protection
Voltage Protection
Over-Temperature Protection
Appications in Mining
Conveyors
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Crusher motors
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Compressors
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Fans
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Screens & Feeders
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Hoists & Cranes
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Earth Leakage coordination
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Why Application-Driven Thinking Beats Spec-Sheet Shopping for Mining
Stop choosing protection relays by spec sheet. In mining, context matters — from conveyors and crushers to screens and feeders. This short thought-leadership video shows why application-driven selection delivers better reliability, fewer nuisance trips, and more defensible engineering choices.
Models for Every Application
MA-05
For Small Industrial Drives
Designed for precision and efficiency, the MA-05 handles currents up to 5A, making it ideal for small industrial drives and compact motor applications requiring dependable protection and control.
MA-10
For Control Panels and Feeders
With a current range up to 10A, the MA-10 is built for control panels, feeders, and low-power circuits, providing reliable motor protection in light-duty environments.
MA-25
For Light Manufacturing Applications
The MA-25 covers currents up to 25A, delivering versatile protection for light manufacturing processes where consistency and accuracy are key.
MA-50
For Medium Pumps and Conveyors
Supporting currents up to 50A, the MA-50 is suited for medium-duty pumps, conveyors, and process lines, ensuring smooth operation and reduced downtime.
MA-100
For Large Pumps and Mixers
The MA-100 handles currents up to 100A, making it a strong performer for large industrial pumps, mixers, and heavy mechanical systems requiring robust overload protection.
MA-250
For Heavy-Duty Motors
Built for demanding environments, the MA-250 supports currents up to 250A, providing superior protection for heavy-duty industrial motors in high-load applications.
MA-300
For High-Load Mining and Processing Motors
At the top of the range, the MA-300 manages currents up to 300A, delivering dependable performance and protection for high-load motors in mining and processing operations.
Communication-Ready Intelligence
CANBUS (MA–CAN–BBRTU)
MODBUS RTU (MA–MODBUS–BBRTU)
PROFIBUS (MA–PROFI–BBRTU)
Coordination with GA Earth Leakage
Ethernet / PROFINET / Modbus TCP / Ethernet IP (MA–ETHER–BBRTU)
Testimonial/Case Study
FAQ
What makes the MA-Relay different from standard motor protection relays?
Unlike conventional overload relays that only trip on current thresholds, the MA-Relay offers full-spectrum intelligent protection monitoring overloads, phase loss, voltage irregularities, earth faults, and temperature conditions in real time. It combines advanced diagnostics with PLC-ready communication, enabling predictive maintenance and faster fault resolution across industrial systems.
Can the MA-Relay integrate with existing PLC and SCADA systems?
Yes. The MA-Relay supports multiple communication protocols, including MODBUS RTU, PROFIBUS, CANBUS, and Ethernet/PROFINET/Modbus TCP/Ethernet IP, allowing seamless integration with virtually any modern PLC or SCADA network. This makes it ideal for Industry 4.0 plants looking to centralize control and data monitoring.
How does the MA-Relay protect motors in pump and conveyor applications?
For pump and conveyor systems, the MA-Relay’s Load Loss Protection detects flow or pressure drops (such as dry running or jammed loads) and disconnects power to prevent mechanical damage. Its Overload and Unbalanced Current Protection features further ensure that motors don’t operate under unsafe or inefficient conditions, reducing downtime and extending equipment life.
What industries benefit most from using the MA-Relay?
The MA-Relay is widely used across mining, water treatment, manufacturing, and processing plants. It’s engineered for rugged South African conditions, making it reliable for heavy-duty, high-load, and continuous operation environments where motor downtime can cost millions per hour.
How do I select the right MA-Relay model for my application?
Each MA-Relay model is designed for a specific current range and application type:
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MA-05 to MA-25: Compact solutions for small drives, control panels, and light manufacturing.
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MA-50 to MA-100: Mid-range for pumps, conveyors, and mixers.
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MA-250 to MA-300: Heavy-duty protection for mining and large processing motors.
Refer to the model selection guide or contact NewElec’s engineering team for assistance with sizing and configuration.
About the BBRTU Communication Module
The BBRTU (Base Board Remote Terminal Unit) is the intelligent backbone that makes every MA-Relay communication-ready.
It allows flexible configuration, firmware upgrades, and modular integration with your preferred industrial network.
Key BBRTU Advantages:
Modular Design
Choose your communication protocol (CANBUS, Modbus RTU, Profibus, or Ethernet) without replacing the relay.
Plug-and-Play Connectivity
Simplifies wiring and installation within MCC panels or distributed control systems.
Data Logging & Diagnostics
Enables time-stamped event data and current/fault history to support predictive maintenance.
Firmware Upgradable
Ensures future compatibility and scalability as plant systems evolve.
Seamless PLC Integration
Supports direct communication with Siemens, Allen-Bradley, and Schneider controllers for complete interoperability.
Whether you need basic serial control or full networked monitoring, the BBRTU gives your MA-Relay the flexibility to adapt to any plant environment.
Download Our Technical Guide
Please complete the form below to gin access and download the Technical Guide PDF.
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