Relay protection device for 380V switch

RP OPTICS delivers premium fiber optic cables, drop cables, splice closures, connectors, SFP transceivers, power meters, cabinets and infrastructure for FTTH, PON, smart cities and data centers.

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Feb 08, 2026

Digital Over-current And Voltage Protection Relay | 3

The Samwha-DSP Digital Over-current and Voltage Protection Relay is an essential device for ensuring the safety and reliability of electrical systems in industrial and

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Mar 26, 2026

3 Phase Monitoring Relay, SPDT, Phase

Three phase monitoring relay with SPDT (1 C/O) contact, performs the monitoring functions including phase loss, phase sequence, phase unbalance, overvoltage

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Dec 13, 2025

Din Rail Adjustable AC 380V 3 Phase Over and Under

Comprehensive Monitoring:Displays ABC phase voltages and offers fault inquiry, making it a versatile voltage monitoring tool. Phase Sequence & Unbalance

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Oct 06, 2025

amiciSmart Automatic Three Phase 380V Over/Under Voltage

Buy amiciSmart Automatic Three Phase 380V Over/Under Voltage (Adjustable Setting) Protection Relay with Auto Re-connect, LED Display, Standard Din-Rail Mounted 380V Over Protection for Rs. Online.

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Jun 03, 2026

Time Mark 2581-380V 3-Phase Monitor Relay

The Time Mark 2581-380V 3-Phase Monitor Relay from Thermal Devices, an authorized Time Mark distributor. Time Mark has a variety of 3-phase relays that can offer protection against phase loss,

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Sep 01, 2025

Protective relays for mains protection | Phoenix Contact

The protective relays of the KOMBISAVE+ product family are perfectly suited for use in the distribution grid. Motors, transformers, cables, and lines can be protected in switching devices with single or

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Dec 16, 2025

three-Phase Voltage control relay 380480Vac, 2 C/O

This Harmony RM22-TR relay allows monitoring of phase and undervoltage/overtage in 3-phase networks. This modular multi function 3-phase control relay is ideal for

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Jun 30, 2025

PROTECTOR TRIP RELAYS

Earth Leakage Protection Relay, a protection device to be used in electrical installations against electric shock and or damage to equipment caused by punctured or weak insulations or contact to live parts.

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Nov 30, 2025

Protective relays and predictive devices | Eaton

Eaton''s protective relays provide you with unique microprocessor-based devices that eliminate unnecessary trips, isolate faults, protect motors and breakers, and

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Sep 23, 2025

Protection relays

Numerical relays are based on the use of microprocessors. Numeric relays are programmable. Most numerical relays are also multi-functional.

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Nov 22, 2025

Three-phase monitoring relays

ABB''s CM-MPS/N three-phase monitoring relays for rated voltage levels up to 820 V AC and 400 Hz offer maximum flexibility and control. A wide variety of cost-effective three-phase monitoring relays

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Dec 24, 2025

Protection and Control Device Numbers and Functions

Description The protection and control devices in electrical equipment can be referred to by numbers, with appropriate suffix letters when necessary, according to the functions they perform.

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Jan 16, 2026

Electromechanical relays

ABB electromechanical relays have protected the power system for more than 100 years, and with the proper inspection, maintenance, and testing techniques,

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Nov 27, 2025

Products Covered

Introduction These units monitor a 3-phase 3-wire supply and operate relays if a phase-phase voltage goes below or above set levels. Front panel controls allow selection of: Under- and Over-voltage trip

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Jan 20, 2026

Thermal overload relays

Thermal overload relays. Thermal overload relays are economic electromechanical protection devices for the main circuit. They offer reliable protection for motors in

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May 23, 2026

SINOTIMER STVP-936 3 Phase AC 380V 400V

SINOTIMER STVP-936 3 Phase AC 380V 400V 50/63/80A Multifunctional Over Under Voltage and Over Current Protection Device

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Jul 05, 2025

Protection Relays | Feeder Protection Relay

Its scope extends across industrial plants, utilities, and commercial facilities where reliable feeder protection is critical. Schneider Electric''s feeder protection relays

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Oct 02, 2025

Protective Relays

Protect critical components in your power system with a wide range of SEL protective relays covering applications and use cases from low to high-voltage protection.

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May 04, 2026

Digital Over-current And Voltage Protection Relay | 3

The Samwha-DSP Digital Over-current and Voltage Protection Relay is a sophisticated device designed to monitor and protect electrical systems from over

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Industry Information
Nov 10, 2025

SIPROTEC Protection Relays | Siemens

Our devices cover a wide range of applications and offer features such as slim design, embedded cybersecurity and IoT connectivity. Read frequently asked questions about our universal

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Nov 22, 2025

Protective relays for mains protection | Phoenix Contact

Which protective relay is right for me? Intelligent mains protection with KOMBISAVE+ The protective relays of the KOMBISAVE+ product family are perfectly suited for use in the distribution grid. Motors,

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Dec 05, 2025

Three-phase voltage monitoring relay DigiTOP VP-380V

DigiTOP VP-380A three-phase voltage monitoring relay is designed to protect three-phase electrical equipment from unacceptable voltage changes, phase

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Sep 11, 2025

Relays | Power Relays, Over 2 Amps | DigiKey Electronics

380VAC Power Relays, Over 2 Amps Power Relays over 2 Amps are an electromechanical device which turns a large load on or off through the use of a smaller control signal.

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