NewElec MA-Relay: Intelligent Motor Protection for Modern Industrial Plants
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.
Why It Matters
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.
Key Protection Features
• Overload Protection: Guards against sustained and cyclic overloads, start stalls, and excessive start attempts.
• Unbalanced Current & Phase Loss: Automatically trips the motor if the current imbalance exceeds user-defined limits or a phase is lost.
• Load Loss Protection: Ideal for pump applications, disconnects the supply when flow or pressure drops, preventing dry running.
• Earth Leakage & Earth Fault Protection: Evaluates fault current magnitude and interrupts the supply instantly.
• Voltage Protection: Detects overvoltage, undervoltage, and incorrect phase rotation for reliable operation.
• Over-Temperature Protection: Accepts up to 3 PTC100 sensors for real-time thermal monitoring.
• Frozen Contactor Detection: Identifies welded contactor poles, preventing electrical hazards during switching.
• LED Fault Indicators: Simplifies maintenance with clear, latched visual diagnostics for faster troubleshooting
Communication-Ready Intelligence
The MA-Relay integrates seamlessly with your plant automation systems using modular communication options:
• CANBUS (MA–CAN–BBRTU)
• MODBUS RTU (MA–MODBUS–BBRTU)
• PROFIBUS (MA–PROFI–BBRTU)
• PROFINET / Modbus TCP / Ethernet IP (MA–ETHER–BBRTU)
Compatible with modern PLCs, the MA-Relay enables real-time monitoring, data logging, and networked control, bringing your motor protection into the Industry 4.0 era.
New Dual-Ethernet Communication Module (COMMS Upgrade)
Engineered for seamless integration and advanced plant networking, the NEW COMMS Module brings next-generation connectivity to the MA Series.
• Dual-Port Ethernet Design: Enables simultaneous communication between PLC and SCADA for redundant, high-speed data exchange.
• Multi-Protocol Support: One module supports PROFINET, Modbus TCP, and Ethernet/IP, reducing the need for multiple interface boards.
• Network Isolation & Reliability: Independent ports ensure network segmentation, improved uptime, and safer plant integration.
• Simplified Setup: Configuration through intuitive software and front-panel access, compatible with existing MA-BBRTU relays.
• Scalable Integration: Ideal for modernising legacy MCCs and connecting distributed protection relays across large facilities.
This module transforms the MA-Relay into a fully Ethernet-ready, Industry 4.0-compliant solution for real-time diagnostics and predictive maintenance.
Models for Every Application
| Model | Current Range | Ideal Use Case |
| MA-05 | Up to 5A | Small industrial drives |
| MA-10 | Up to 10A | Control panels and feeders |
| MA-25 | Up to 25A | Light manufacturing |
| MA-50 | Up to 50A | Medium pumps and conveyors |
| MA-100 | Up to 100A | Large pumps and mixers |
| MA-250 | Up to 250A | Heavy-duty motors |
Why Choose NewElec
• 45+ years of local engineering excellence.
• Designed for South African industrial environments.
• Built to comply with modern energy and safety standards.
