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
How MA Relay Helps
Measured outcomes
Key Features & Why They Matter
Overload Protection
Unbalanced Current & Phase Loss
Load Loss Protection
Earth Leakage & Earth Fault Protection
Voltage Protection
Over-Temperature Protection
Applications in Mining
The MA Relay addresses critical protection challenges in mining operations where traditional overload relays fall short. Mining environments demand sophisticated protection that accounts for variable frequency drives, extended cable runs, high-inertia loads, and harsh operating conditions. This intelligent relay provides comprehensive motor protection while minimising false trips that lead to production losses.
Conveyors
Protects belt conveyor drives against overload, stall, and phase loss. Handles high starting currents and extended acceleration times common in long overland conveyors.
Crusher Motors
Guards against locked rotor conditions when material jams occur. Provides rapid fault detection to prevent mechanical damage to crushing equipment.
Compressors
Monitors thermal conditions during loaded starts. Detects loss of load indicating compressor valve or unloader failure in compressed air systems.
Ventilation Fans
Ensures continuous operation of critical underground ventilation systems. Provides phase rotation
Screens & Feeders
Detects mechanical binding and unbalanced loads in vibrating equipment. Protects against bearing failures through temperature monitoring inputs.
Hoists & Cranes
Safeguards critical material handling equipment with frozen contactor detection. Monitors current balance to identify mechanical issues before failure.
Earth Leakage Coordination
Integrates with ground fault protection systems. Provides selective tripping to isolate faults without disrupting entire mining sections
The MA Relay Deep Dive
In this video, we break down how the MA protection relay works, the key features engineers rely on, and how it improves motor reliability, pump protection, and electrical safety across industrial environments.
Whether you’re working in mining, water treatment, manufacturing, utilities, or heavy industry, the MA Relay offers a powerful suite of protection functions designed to minimise downtime and extend equipment life.
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
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
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)
Customer Testimonials
Frequently Asked Questions
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?
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?
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 MA Series Deep Dive Guide
Complete the form below to gain access to learn more about how the MA Series can Optimise Operational Resilience in the Mining Sector.
Related Resources
Innovative Solutions for Electrical Consulting Engineers in Mining
Application-Driven Relay Choices for Conveyors, Crushers & Feeders in Mining
Q&A Content Piece - 'How to' coordinate ELP with VFD (Mining)
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