Socomec 49314723 - Differential relay RESYS B420 B type 70-300VUC 10-500mA
Socomec

49314723

Contact for Pricing

Overview

The Socomec RESYS B420 B differential relay (SKU: 49314723) is a Type A electronic protection device designed for motor circuits and electrical installations requiring precise earth leakage detection. Operating within a voltage range of 70-300 VUC and current sensitivity of 10-500 mA, this modular 2.5-module relay provides configurable protection against indirect contact and limits earth leakage currents to mitigate fire or explosion risks in TT, TN, and IT neutral systems. Its compact 44mm-wide design integrates seamlessly into dedicated enclosures, with IP40 case protection and IP20 terminal protection. The device features two configurable relays (alarm or pre-alarm at 50% IΔn), adjustable tripping current (0.03-30 A), and time delay settings from 0 to 10 seconds. Real-time leakage current monitoring is displayed via an LED bargraph, while TRMS monitoring ensures immunity to untimely triggers. Compliance with IEC 60755, IEC 60947-2, and IEC 61543 A1 standards guarantees reliability. Ideal for energy, industry, and building applications where continuity of service and fault prevention are critical.
  • Voltage range: 70-300 VUC, current sensitivity: 10-500 mA
  • Type A differential relay for motor circuits and electrical installations
  • Configurable relays (alarm/pre-alarm at 50% IΔn), adjustable IΔn (0.03-30 A)
  • Time delay settings: 0 to 10 seconds, TRMS monitoring for immunity to false triggers
  • Compact 44mm modular design, IP40 case protection, IP20 terminal protection
  • Compliant with IEC 60755, IEC 60947-2, IEC 61543 A1 standards

Specifications

Package Dimensions (L x W x H)
0.5248 FT x 0.3936 FT x 0.1804 FT
Package Dimensions (L x W x H)
0.16 m x 0.12 m x 0.055 m
Package Weight (Imperial)
0.594 L
Package Weight (Metric)
0.270 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.