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Earth leakage relays - LOVATO ELECTRIC
Earth leakage relays, also known as ground fault relays or residual current relays, are critical safety devices designed to detect leakage currents to earth and trigger an alarm or disconnection. The LOVATO ELECTRIC range includes models with single or dual operation thresholds, offering flexibility for different protection schemes. These relays...
Earth leakage relays, also known as ground fault relays or residual current relays, are critical safety devices designed to detect leakage currents to earth and trigger an alarm or disconnection. The LOVATO ELECTRIC range includes models with single or dual operation thresholds, offering flexibility for different protection schemes. These relays are typically used with toroidal current transformers and external multipliers to cover a wide range of sensitivity and current ratings. Available in modular, flush, and internal panel mount versions, they feature options like flag signal indication, failsafe outputs, and prealarm alerts. All units are type A earth leakage relays, compliant with IEC/EN 60947-2, and support various supply voltage ranges for global compatibility.
These relays are essential in industrial, commercial, and residential electrical installations where protection against indirect contact and fire risk is paramount. Common applications include distribution boards, motor control centers, and automation panels in sectors such as manufacturing, data centers, healthcare, and renewable energy. They are also used in environments with sensitive electronic equipment where nuisance tripping must be minimized, and in systems requiring selective coordination for continuity of service.
The main subcategories include relays with one operation threshold (e.g., series PR, PRM) and two operation thresholds (e.g., series PRD). Key article codes follow patterns like PRxxxx or PRMxxxx, where xxxx denotes specific features such as supply voltage, threshold range, and mounting type. Toroidal current transformers (e.g., series TC) and external multipliers (e.g., series MX) are also part of the category. These components are designed to work together for precise leakage current measurement and protection.
At Electric Automation Network, we provide expert technical support from specialist engineers to help you select the right earth leakage relay for your application. Our portal offers real-time pricing, detailed technical documentation for each article, and express worldwide shipping. Whether you need a standard modular relay or a specialized dual-threshold unit, we ensure fast delivery and professional guidance to keep your systems safe and compliant.
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