Relays
A relay is a device used to remotely control an electrical circuit via another circuit. It is a key component in…
Understanding Relays
In practical terms, a relay remotely controls an electrical circuit through another circuit, while ensuring full isolation between the two. Imagine a switch you can operate electrically to control a circuit with a low-power signal. This functionality makes relays a crucial element in the automation and protection of electrical systems.
How Does a Relay Work?
Relays typically operate using an electromagnet. When the electromagnet is activated, it generates a magnetic field that moves a mechanism to open or close a circuit. This method allows you to control electrical loads without risk to the user, eliminating the need for direct human interaction with the controlled circuits.
A conventional electromechanical relay consists of three main components:
- A coil
- An armature
- Contacts
When current flows through the coil, it creates a magnetic field that attracts the armature. This movement opens or closes the contacts, activating the desired electrical circuit.
Types of Electrical Relays Used in Industry
Relays play a central role in many electrical applications, offering an effective solution for controlling circuits in the industrial sector. At One-Elec, we offer a wide range of relays tailored for industrial use. Our selection includes plug-in relays, timer relays, safety relays, and control relays—each meeting specific needs. Below is an overview of the different types of relays available at competitive prices in our online shop.
Plug-in Relays
Plug-in relays are designed for easy installation on pre-fitted bases, allowing for quick and flexible setup. They are ideal for systems requiring regular maintenance, as they can be removed and replaced without disconnecting the cables. Thanks to their modular design, they enable circuits to be switched quickly and safely, simplifying on-site interventions for electrical professionals.
Featured Schneider Electric plug-in relays from the Zelio range include:
- RXZE2S114M: A relay compatible with the RXM and REXL ranges, offering four contacts that support up to 10 A.
- RXM4AB2P7: A mini-relay with an LED indicator and a lockable test function, ideal for applications requiring a control voltage of 230 V AC.
- RSB2A080BDS: A double pole double throw (DPDT) relay with a control voltage of 24 V DC and a rated current of 8 A.
Schneider Timer Relays
Timer relays precisely control when a circuit is switched on or off. They are essential in scenarios like lighting, heating, or ventilation systems, where it’s necessary to delay or limit the operating time of equipment. These timers are both precise and flexible, helping to reduce energy costs—a definite advantage.
Featured Schneider Electric timers from the Zelio range:
- RE17RMMW: A multifunction relay with a time delay range from 0.1 seconds to 100 hours.
- RE17RCMU: Similar to the previous model but with an off-delay function.
- RE17LAMW: A single-function relay, perfect for applications requiring a switch-on delay.
Schneider Safety Relays
Safety relays are crucial for protecting operators and machinery by ensuring immediate stops when necessary. They monitor safety devices such as emergency stop circuits, position switches, and sensors, guaranteeing maximum safety in industrial environments.
Two Schneider Electric safety relay models from the Preventa XPSU range in stock at One-Elec:
- XPSUAF13AP: A multifunctional module with up to three safety contacts, compliant with the highest safety standards.
- XPSUAB11CP: A more compact module, ideal for applications requiring a PL c/category 1 and SIL 1 safety level.
Control Relays
Control relays monitor electrical circuits to ensure the proper functioning and safety of industrial installations. For example, they can detect anomalies in circuits, helping prevent breakdowns and maintaining operational efficiency.
Featured Schneider Electric control relays from the Zelio range on One-Elec:
- RM35TF30: A multifunction relay that monitors phase sequences and phase loss.
- RM35LM33MW: Specialised in liquid level control, using resistive probes for accurate detection.
- RM35JA32MW: A single-phase current control relay, perfect for lifting, packaging, or pumping applications.
Relays are indispensable products for industrial electrical installations, ensuring safety, efficiency, and precise control. Whether you’re looking to optimise processes, enhance safety, or automate systems, One-Elec has a relay in stock to meet your needs. Browse our catalogue to find the perfect relay for your industrial applications, all at the best prices.