Socomec 49314724 - Differential relay RESYS B420 B type 70-300VUC 30mA-3A
Socomec

49314724

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Overview

The Socomec RESYS B420 B differential relay (SKU: 49314724) provides essential protection for motor circuits and electrical installations. Operating within a 70-300VUC range, this Type A relay offers adjustable earth leakage current detection from 30mA to 3A, ensuring precise fault identification. Its TRMS monitoring enhances trigger accuracy, minimizing nuisance tripping, while the real-time LED bargraph visually displays leakage current fluctuations. The compact 44mm modular design facilitates easy integration into control panels. Configurable functions include two output relays for alarm or pre-alarm at 50% IΔn, with adjustable time delays from 0 to 10 seconds. Users can select positive or negative security for enhanced operational control. Certified to IEC 60755, IEC 60947-2, IEC 60664, and IEC 61543 A1, the RESYS B420 B boasts improved EMC immunity. Its applications span Energy, Industry, and Building sectors, offering rapid insulation fault recognition, preventing power cuts, and mitigating fire/explosion risks in TT, TN, and IT neutral systems. This relay is crucial for increasing network availability and preventing production downtime.
  • Type A differential relay for motor circuits and electrical installations
  • Adjustable earth leakage current: 30mA to 3A
  • TRMS monitoring for accurate tripping and improved EMC immunity
  • Real-time LED bargraph displays leakage currents
  • Compact 44mm modular design with configurable alarm/pre-alarm functions

Specifications

Package Dimensions (L x W x H)
0.1968 FT x 0.3936 FT x 0.5314 FT
Package Dimensions (L x W x H)
0.06 m x 0.12 m x 0.162 m
Package Weight (Imperial)
0.506 L
Package Weight (Metric)
0.230 kg
RESYS P40 US=230VAC

49422723

RESYS P40 US=230VAC

Frequently Asked Questions about Socomec

What certifications and standards do Socomec products comply with?

Socomec products are certified to multiple international standards, including IEC/EN 61439 for low voltage switchgear, with compliance verified through their Tesla Lab testing facility. The company holds certifications from key international bodies such as UL, CSA, COFRAC, DEKRA, and ASTA. Their products undergo rigorous testing across electrical, mechanical, climatic, and functional domains to ensure safety, performance, and reliability in industrial applications.

What is Socomec's warranty policy?

Socomec offers flexible warranty options, including extended warranties up to 20 years for energy storage systems. Their warranty covers corrective maintenance, parts replacement, on-site labor, and travel costs. To qualify, customers must maintain a preventive maintenance contract and keep equipment permanently connected to the internet for data monitoring. Warranty extensions are available for complete systems or batteries, with rapid response times and a performance guarantee on battery residual energy levels.

What industries and applications are Socomec products used for?

Socomec products are critical for power management and energy efficiency across multiple key industries, including industrial facilities, infrastructure, healthcare, data centers, energy production, and commercial & industrial (C&I) buildings. Their solutions address essential needs such as power conversion, switching, monitoring, and protection, with specialized equipment like UPS systems, energy storage, switches, automatic transfer switches, and power monitoring technologies designed to ensure electrical network reliability and performance.

What technical support does Socomec offer?

Socomec offers comprehensive technical support through a robust service package including 24-hour call out, rapid on-site repairs, preventive maintenance visits, and remote diagnostics. Our dedicated Services team of nearly 400 experts provides end-to-end support, from initial commissioning to power quality audits and equipment optimization. We generate exhaustive intervention reports, offer proactive online troubleshooting, and maintain original spare parts to ensure minimal equipment downtime.

What are the main product lines offered by Socomec?

Socomec offers a comprehensive range of electrical equipment including inverters, measuring stations, energy storage systems, switches, and automatic source switches. Their product lines are specifically designed for critical power applications across key sectors like industry, infrastructure, healthcare, data centers, and commercial buildings, with a strong focus on energy efficiency and renewable energy solutions.

What are the key features of Socomec products?

Socomec products are characterized by cutting-edge power conversion technologies designed for critical electrical infrastructure, featuring three key protection levels: Prime (reliable and cost-effective), Superior (high-performance), and Ultimate (fault-tolerant). Their product range includes static UPS systems, energy storage solutions, switchgear, and advanced monitoring technologies, all developed by in-house European engineers using high-quality components and Industry 4.0 manufacturing processes.

What communication protocols do Socomec products support?

Socomec products support multiple industrial communication protocols, including Modbus RTU, Modbus TCP/IP, EtherNet/IP, PROFIBUS, PROFINET, CANopen, BACnet MS/TP, and BACnet IP. These protocols enable flexible network integration, allowing seamless communication across various industrial automation systems and providing comprehensive monitoring and control capabilities.

What environmental ratings do Socomec products have?

Socomec products meet rigorous environmental ratings, including IEC 60529 IP66 protection, UL 508A Type 1, 2, 3, 4, 4X, 12, and 13 standards, and NEMA Type 1, 2, 3, 4, 4X, 12, and 13 classifications. These ratings ensure robust protection against dust, water, and corrosion in both indoor and outdoor environments, with operating temperatures ranging from -40°C to 130°C.

How are Socomec products typically installed?

Socomec products are professionally installed through a comprehensive commissioning process that includes critical steps such as work environment inspection, detailed electrical installation checks, internal and external equipment verification, system power-up and configuration, and thorough operational testing. Their installation is performed by authorized, manufacturer-trained personnel who ensure compliance with installation standards, complete a Factory Acceptance Test, and provide a formal certification of 'safe and reliable installation'.

What accessories are available for Socomec products?

Socomec offers a comprehensive range of accessories across its product lines, including communication options like dry-contact interfaces, MODBUS RTU RS485, BACnet/IP, and NET VISION Ethernet interfaces. For UPS and power systems, accessories include USB ports for report downloads, 7-inch touch-screen displays, and communication slots that allow for customized monitoring and control solutions. Additionally, Socomec provides specialized accessories for battery care, remote monitoring, and system integration tailored to specific industrial and energy storage applications.