Low Voltage Equipments
Circuit Breakers and Electrical Protection Solution
A comprehensive range of circuit breakers and electrical protection devices is available to meet diverse needs, from compact solutions to high-current applications. These products ensure reliability, performance, and safety for electrical systems.
What is a Circuit Breaker?
A circuit breaker is a safety device that interrupts faulty or excessive current flow, protecting electrical systems from damage. It functions as a switch that can be operated manually or automatically to open or close a circuit. Unlike fuses, circuit breakers can be reused multiple times.
How Circuit Breakers Work
Circuit breakers consist of moving and fixed contacts that carry current when the circuit is closed. When unsafe current levels are detected, an electromagnet triggers a mechanism to separate the contacts, breaking the circuit and stopping the flow of electricity. This prevents damage to equipment and reduces the risk of accidents.
Types of Circuit Breakers
1. Molded Case Circuit Breakers (MCCBs):
– Protect cables with current ratings from 100A to 3200A.
– Offer high breaking capacities and fault-level detection.
– Ideal for industrial applications and tailored load requirements.
2. Switch Disconnectors:
– Combine the functions of breakers and load switches.
– Provide low-maintenance, durable, and cost-efficient protection for low-voltage circuits.
3. Earth Leakage Protection Devices:
– Monitor and detect earth leakages to prevent fires and electric shocks.
– Automatically cut the circuit when harmful voltages are detected.
4. Motor Circuit Breakers and Switches:
– Protect motors and wires by controlling current flow.
– Include compact and adaptable solutions for industrial, building, and infrastructure applications.
Key Benefits of Circuit Breakers
– Prevent damage to electrical equipment.
– Reduce the risk of accidents and fires.
– Reusable and reliable compared to fuses.
– Provide precise control over electrical circuits.
Contactors and Protection Relays
Contactors and protection relays are essential components in electrical systems, enabling the control of high-power applications through low-voltage inputs. They are widely used in industrial, commercial, and residential settings to automate and protect electrical circuits.
What are Contactors and Relays?
– Contactors: Electrically controlled switches that manage high-powered applications by converting low-voltage inputs into higher currents. They are used to turn on/off high-voltage equipment and are ideal for heavy-duty applications.
– Relays: Smaller-scale devices used for low-voltage control and automation, often acting as amplifiers or switches in electrical circuits.
How Do They Work?
When an electromagnetic coil is energized, it creates a magnetic field that pulls an armature toward a fixed contact, closing the circuit. When the coil is de-energized, a spring returns the armature to its original position, opening the circuit.
Applications of Contactors and Relays
– Automating lights and electrical systems in buildings.
– Controlling motors, lighting, and motor starters.
– Used in mercury relays and other specialized applications.
Types of Contactors
1. Reversing Contactor: Allows motor direction reversal, commonly used in machinery.
2. Miniature Contactor: Compact design for space-limited applications.
3. AC-1 Contactor: For non-inductive or slightly inductive loads (e.g., resistive heating).
4. AC-2 Contactor: For starting slip-ring or squirrel-cage motors.
5. AC-3 Contactor: Designed for motor loads with high inrush currents during startup.
6. AC-4 Contactor: For frequent switching operations, such as reversing motors.
7. DC Contactor: Specifically for DC power circuits, including battery systems.
Surge Protection Devices
Surge protection devices (SPDs) safeguard electrical installations from overvoltage or voltage surges, which can damage equipment and cause downtime. Choosing the right SPD is critical to ensure the protection of expensive electronic devices.
Key Differences Between Contactors and Relays
– Contactors: Designed for high-current, heavy-duty applications.
– Relays: Used for low-voltage control and automation in smaller-scale systems.
Why Use Contactors?
– Manage high-powered applications efficiently.
– Convert low voltage to higher currents.
– Enable safe switching of high-voltage equipment.
Protection Relays
A range of protection relays is available, including:
– Electric over-current relays.
– Electric overload relays.
– Thermal overload relays.
Electrical Interconnections and Accesories
Rail-Mount Terminal Block Systems, Installation Terminal Blocks,Pluggable Connectors,PCB Terminal Blocks and Connectors,Field-Wiring Terminal Blocks,Marking
Automation Technology
Automation technology offers versatile solutions with open standards, simplifying production processes and building applications through a comprehensive product range. Solutions span from software, HMI devices, and control technology to fieldbus-independent I/O systems, switches, and sensor/actuator boxes. A key advantage is the flexibility and freedom in planning provided by modular, fieldbus-independent devices used for decentralized automation.
In the begining of 1990, a groundbreaking fieldbus system was introduced, allowing fieldbus nodes to be precisely tailored to specific applications using a building block principle. This system has since evolved with modern control technology and displays, ensuring robust, maintenance-free, and reliable performance. Key benefits include:
– Integrated communication from controllers to sensors and actuators, supporting popular fieldbuses and Ethernet standards.
– Quick start-up times enabled by modular designs and adherence to established standards.
– Worldwide usability under harsh operating conditions, backed by international certifications.
– Over 20 years of expertise in automation, combined with superior service and support.
This technology ensures safe, efficient, and adaptable solutions for diverse industrial needs.
Interface Electronic
Modern equipment design demands versatile components to address diverse challenges, including user- and maintenance-friendliness, low investment costs, safety, availability, and simplicity in design and operation.
To meet these requirements, various interface modules are available, offering solutions such as pluggable function and interface modules, compact relay and optocoupler designs, and high-efficiency switch-mode power supplies. These components ensure safe isolation between wiring and functional levels, providing reliable and efficient solutions for modern industrial applications.