Heavy-Duty Bar-Mounted Contactors for AC & DC Applications

Our N Type contactors are robust, bar-mounted switching devices designed for low voltage, heavy-duty industrial applications. Built to handle both AC and DC operations, these contactors deliver reliable performance in demanding environments.

Key Applications:

• DC Motor Control – Reliable switching for direct current motors in industrial systems
• Slip Ring Motor Shorting – Supports up to 4000V rotor voltage and 3000A rotor current, ideal for high-capacity motor setups
• DC Injection Braking – Enables smooth and controlled motor stopping via brake resistor connections

Why Choose Our N Type Contactors?

• Suitable for harsh operating conditions
• Proven performance in heavy-duty systems
• Designed for durability, safety, and long service life

We supply a wide range of high-performance resistor solutions designed for industrial applications requiring reliable motor control, power system protection, and harmonic filtering.

 Slip Resistors – Used with slip ring motors in demanding applications such as primary crushers in the sugar and wood pulp industries. These resistors help control torque and limit current during motor startup.

 Starting & Brake Resistors – Designed to manage the starting and stopping of large electric motors, reducing mechanical stress and electrical surges. Commonly used in:

• Cranes
• Pumps
• Large fans
• Compressors
• Braking inverter motor systems

 Neutral Grounding Resistors (NGRs) – Installed in medium and low voltage (MV/LV) distribution networks, NGRs protect generators and transformers from damage during earth faults by safely limiting fault current levels.

 Harmonic Filter Resistors – Essential for reducing harmonic distortion caused by electronic power converters. These resistors are typically used with reactors and capacitors to improve power quality and network stability.

 Traction & Locomotive Resistors – Specialised for on-board electrical braking systems in rail and transport applications. Built to withstand high thermal loads and ensure reliable braking performance.

Phendula Synergy is the authorised distributor of Mors Smitt’s Q-style signalling relays in South Africa. Manufactured to the British Rail Standard BR930, these relays are trusted across global rail networks for their:

• Exceptional reliability in mission-critical signalling systems
• Robust mechanical durability for long operational life
• Full compliance with stringent railway safety standards

Ideal for both new installations and legacy system replacements, Mors Smitt Q-style relays deliver performance where safety and precision are non-negotiable.

Locally Manufactured Specialised Cables

Signal • Power • Telecoms • Cabtyre • Instrumentation

At Phendula Synergy, we offer a wide range of locally manufactured, high-performance cables, engineered to meet the demands of diverse industrial sectors, including rail, mining, telecommunications, and automation. Our cables are designed for durability, safety, and compliance with both local and international standards.

Signal Cables – Designed for reliable transmission of data and control across signalling systems, our signal cables are ideally suited for use in rail networks. Construction of our signal cables includes specific colour coding in accordance with required network systems. Exceptional mechanical protection is guaranteed in the form of galvanised steel wire or double steel tape armouring.

Low Voltage Power Cables (0.6/1kV) – Our range of power cables include options of armoured cables for environments that require additional mechanical protection and unarmoured for use in trays and conduits. We can supply in a range of conductors including Copper, Aluminium and Composite, depending on the application we can offer rigid or flexible conductors. We provide insulations option of flame retardant, low halogen flame retardant and zero halogen flame retardant.

Telecoms Cables – Our telecom cables support both voice and data transmission over short and long distances. Manufactured to comply with local and international standards, these cables are suitable for use in structured cabling systems, network backbones, and telecommunications infrastructure. Suppliers of railway approved construction telephone cables (SCCA4 and SCCA5) and telephone cables for underground mining systems in both 0.6mm and 0.9mm constructions.

Cabtyre Cables – Highly flexible and suitable for mobile and fixed use, cabtyre is designed for use with portable equipment, power tools, and temporary installations. Our cabtyre cables are manufactured to withstand repeated movement, UV stability allows for permanent outdoor use.

Instrumentation Cables – Specifically design for use in a variety of industries including Mining, Processing plants, and factory automation. Instrumentation cables are designed for the clean and accurate transmission of data and signalling. These cables are generally constructed in pairs, triads and quads, they are either individually and overall screened with aluminium foil tape or only overall screened depending on the application. Armouring options include steel wire armour and aluminium poly laminate tubing; unarmoured versions are also available.  For applications that require movement we can offer braided screens as an alternative to aluminium foils. Outer sheath options are extensive and can be tailored to your unique requirements

Phendula Synergy is the official agent for Greenwood Engineering in South Africa, providing sales, repairs, calibration services and after sales support for the renowned MiniProf range of measurement systems.

What is Miniprof

MiniProf systems are high-precision, full-contact profile measurement tools used to monitor and analyse the cross-sectional profiles of:

• Rail tracks
• Wheels
• Brakes
• Switches and crossings

These compact, handheld devices are easy to operate, deliver instant, accurate results, and are widely regarded as the most precise tools on the market for rail profiling.

Trusted Worldwide

MiniProf systems are used globally in:

• Quality control and safety compliance
• Maintenance planning and performance evaluation
• Research and development
• Maintenance operations such as rail grinding, rail milling, and wheel machining

From basic data collection to advanced post-analysis, MiniProf delivers the reliable insights needed to ensure optimal rail and wheel performance.

Local Support & Services

As the local agent, we offer:

• Repairs and servicing
• Certified calibration
• Technical support and training

Our wiper systems are individually engineered to meet the exact performance, durability, and environmental requirements of your application, we deliver solutions that combine functionality, reliability, and long service life.

Built for Your Environment:

• Withstands extreme weather, temperature, and vibration

Tailored Performance:

• Custom sweep angles, arm lengths, motor speeds & blade types
• Designed for visibility, safety, and maximum efficiency

Proven Reliability:

• High-quality materials and corrosion-resistant components
• Built to operate in challenging conditions with minimal maintenance

Whether you’re retrofitting an existing system or designing from scratch, our team works closely with you to develop a wiper solution that fits your exact specifications.

High-Reliability Solutions for Rail Vehicle Applications

At Phendula Synergy, we provide a specialised range of relays and circuit protection devices engineered for the harsh and demanding environments of rolling stock. Designed to withstand vibration, temperature fluctuations, and electrical surges, our products ensure safety, reliability, and long service life in passenger and freight rail applications.

Relays – Our rolling stock relays are manufactured to international railway standards, delivering exceptional switching performance for signalling, control, and safety systems. Available in plug-in and PCB mount designs, they offer high dielectric strength, mechanical endurance, and proven resistance to shock and vibration.

Circuit Breakers – Compact and reliable, our circuit breakers safeguard critical electrical systems against overloads and short circuits. Options include thermal, magnetic, and hydraulic-magnetic designs, each compliant with EN and IEC standards for railway use.

Railway Compliance – All rolling stock relays and protection devices are certified to meet stringent railway requirements, ensuring fire safety, EMC compatibility, and environmental resilience for both new vehicle builds and fleet upgrades.

Phendula Synergy is the official authorised distributor of Mafelec in South Africa — a globally recognised leader in control and signalling components designed specifically for harsh and demanding environments.

Mafelec products are trusted across a wide range of industries, including:

• Rail and Transportation
• Defence and Security
• Energy and Utilities
• Industrial Automation

Engineered for environments where performance, safety, and reliability are critical, Mafelec solutions meet the highest international standards and offer proven durability under extreme conditions.

We offer full support on a wide selection of Mafelec products, including:

• Illuminated push buttons & selector switches
• Control stations & emergency stop solutions
• Custom signalling devices
• Products compliant with EN, IEC, and railway standards

Precision You Can Rely On

At Phendula Synergy, we provide a range of professional calibration services to ensure your equipment performs accurately and reliably. Our calibration capabilities include:

• Electrical Calibration – Instruments, meters, and control devices
• Torque Calibration – Torque wrenches, drivers, and tools
• Pressure Calibration – Gauges, transducers, and pressure instruments

• Dimensional Calibration – Calipers, micrometers, dial gauges, height gauges, and other precision measuring tools
• Temperature and Humidity Calibration – Thermometers, data loggers, hygrometers, and environmental monitoring instruments

All services are performed by experienced technicians using traceable standards to ensure compliance and precision.