Three-phase protection relays

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Three-phase protection relays | Choosing the Right Protection Relay
Protection relays have different functions. They are often made up of several modules, each of which performs a specific function. In this guide, we will distinguish three types of functions: protection against abnormal variations in the main supply, protection against leakage currents, and protection against overloads. Protection against abnormal grid variations Abnormal voltage, current, and frequency variations can lead to problematic phenomena....
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thermal protection relay
thermal protection relay
ZEB series

Tripping current: 250 A

Motor protection is one of the central tasks of the electrical equipment of any machine. The electronically configurable ZEB electronic motor protection relays of the Eaton Moeller series ...

overload relay
overload relay
MP8000 series

Trigger voltage: 90 V - 690 V

The MP8000 is an advanced motor protection electronic overload relay that is fully programmable via Bluetooth* using an iPhone* or Android* smartphone or tablet with the Littelfuse App. It is easy to ...

voltage protection relay
voltage protection relay
MPU-32 series

The MPU-32 series Motor Protection Unit is used to provide current and temperature-based protection, metering, and data-logging for three-phase, low-voltage, medium-horsepower ...

voltage protection relay
voltage protection relay
777-ACCUPOWER

... fully-programmable, 3-phase motor and pump protection relay. It allows for entry of motor hp rating, full-load amperes, efficiency, and power factors, and will then accurately calculate ...

earth-leakage protection relay
earth-leakage protection relay
RG1M series

... Tripped relay. Power LED flashing and leakage LED ON. Detection of a transformer continuity fault Applications The RG1M relays combined with the WG / WGC transformer provides complete differential ...

earth-leakage protection relay
earth-leakage protection relay
RGE series

... Permanently: 100 % Applications The relays of the RGE series and the transformer of the WG / WGC series enable a full earth leakage protection for both single and three-phase ...

phase sequence protection relay
phase sequence protection relay
SIU-C

Trigger voltage: 24 V - 230 V

... SIU-C represents the best and most precise protection solution for transformers and electrical machines in high, medium, and low-voltage distribution systems. The SIU-C is a voltage and frequency protection ...

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FANOX ELECTRONIC
feeder protection relay
feeder protection relay
SIL-S LPIT

SIL-S LPIT Feeder Protection We continue introducing new protection relays with comprehensive protection capabilities and a complete range of functions for switchgear ...

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FANOX ELECTRONIC
overload relay
overload relay
G/BG EEx

Trigger voltage: 230, 115, 24 V

Motor safety in volatile or harmful spaces is guaranteed by 3 dimensional ATEX 94/9/EC used for 3-stage motors offering up to 1000 Vac Currents between 1,5 and 630 A with greater thermal memory optical ...

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FANOX ELECTRONIC
grid and system protection relay
grid and system protection relay
NA003-M64

Trigger voltage: 24, 110 V

Grid protection monitoring relay RE series; Frequency and voltage monitoring; Grid and system protection; Functionally Safe; Measuring voltage 3 x 400/230V AC; Supply voltage 24V DC, ...

grid and system protection relay
grid and system protection relay
NA003.COM-64

Trigger voltage: 24 V - 110 V

... system protection monitoring relay RE series; Frequency and voltage monitoring; Functional safety; Measuring voltage 3 x 400/230V AC; Supply voltage 24V DC, 110-240V AC; 3 CO contacts; Width 107 mm; Installation ...

arc flash protection relay
arc flash protection relay
AFR-M series

Tripping current: 5 A
Trigger voltage: 220 V

... The AFR-M Arc flash protection relay is designed to monitor the busbar sections within a power system for potential arc fault occurrences. This advanced arc flash relay can monitor up ...

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Chongqing Blue Jay Technology Co. Ltd
over-current protection relay
over-current protection relay
PR 240

Tripping current: 5 A
Trigger voltage: 250 V

... intelligent motor protection relay provides comprehensive protective, monitoring, and control functions for low-voltage motor protection. Feature of PR240 intelligent motor management ...

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Chongqing Blue Jay Technology Co. Ltd
arc flash protection relay
arc flash protection relay
AFR-S

Tripping current: 5 A
Trigger voltage: 220 V

... functions encompass three-stage phase-to-phase overcurrent protection, overload protection, zero-sequence overcurrent ...

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Chongqing Blue Jay Technology Co. Ltd
earth-leakage protection relay
earth-leakage protection relay
DER4B/2D

Tripping current: 0.03 A - 30 A
Trigger voltage: 48 V - 400 V

... Din modules Dossena presents the DER4B range, the new generation of type B differential toroid relays. DER4B is recommended for electrical protection in the tertiary sector, where devices that generate ...

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DOSSENA
earth-leakage protection relay
earth-leakage protection relay
DER4B/2I

Tripping current: 0.03 A - 30 A
Trigger voltage: 48 V - 400 V

... Recessed 96x96mm Dossena presents the DER3B range, the new generation of type B differential toroid relays. DER3B is recommended for electrical protection in the tertiary sector, where devices that ...

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DOSSENA
earth-leakage protection relay
earth-leakage protection relay
DER4/0D

Tripping current: 0.03 A - 30 A
Trigger voltage: 48 V - 400 V

The residual current relays of the DER4 Dossena range can be used on LV networks in alternating current of the TT and TN type. They make it possible to achieve adequate selectivity and residual current protection ...

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DOSSENA
three-phase protection relay
three-phase protection relay
LXPRC/S

Trigger voltage: 110, 208, 380, 400, 415 V

... Monitors own three phase, 3-wire supply - Detects incorrect phase sequence and phase loss - Adjustable Trip levels and Time delay - SPDT Relay output - ...

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Broyce Control
thermal protection relay
thermal protection relay
TH-T series

Tripping current: 0.16 A - 480 A

Protects motors against overload and locked rotor, securing safe operation. Standard model complies with Japanese and many international standards.

thermal protection relay
thermal protection relay
TH series

Tripping current: 0.1 A - 400 A
Trigger voltage: 200 V - 440 V

Protects motors against overload and locked rotor, securing safe operation. Standard model complies with Japanese and many international standards.

phase sequence protection relay
phase sequence protection relay
REM601

... REM601 is a dedicated motor relay designed for the protection and control of medium-voltage and low-voltage asynchronous motors in the manufacturing and process industry. The relay provides ...

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ABB Oy Distribution Automation
differential protection relay
differential protection relay
SIPROTEC 7UT8 series

... transformer differential protection have been designed specifically for the protection of two and multi-winding (up to 5 sides). transformers. They are the main protection for the transformer ...

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SIEMENS Energy automation and smart grid
electric motor protection relay
electric motor protection relay
RW_E series

Tripping current: 0.4 A - 420 A
Trigger voltage: 1,000, 690 V

... an individual base, the RW_E electronic overload relays provide protection for electric motors up to 840 A. •Incorporated protections: overload, phase loss and phase ...

electric motor protection relay
electric motor protection relay
C440 series

Tripping current: 0.3 A - 1,500 A
Trigger voltage: 690 V

Increased flexibility, enhanced protection The C440/XTOE electronic overload relay delivers enhanced motor protection and communications capabilities in a single compact device, directly ...

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Eaton Count Control Products
thermal protection relay
thermal protection relay

Tripping current: 5 A - 30 A

... Great accuracy Full reliability Phase unbalance protection Direct mount to IEC contactors Panel mount adapter for NEMA contactors Interchangeable with thermal overload relay ...

level protection relay
level protection relay
FPC 400

Tripping current: 5,000, 1 mA

FPC 400 is a family of current or voltage digital protection relays with easy to use interface meant for variety of solutions in industry and power distribution. Its robust design enables it to be placed ...

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Iskra d.d.
over-current protection relay
over-current protection relay
PAP series

Trigger voltage: 24, 240 V

... level Imin, the protector will trip and the red LED will illuminate indicating the fault condition. During the time delay period the red LED will flash for the set time (t) before the relay de-energises output ...

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Crompton Instruments
over-voltage protection relay
over-voltage protection relay
800VPR-3

Tripping current: 5 A
Trigger voltage: 310 V - 520 V

Three phase voltage Protection relay • Monitors: Over / Under voltage, Phase failure and Phase sequence • 1 C/O DPDT output relay • ...

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SELEC Controls Pvt. Ltd.
motor protection relay
motor protection relay
RX series

Tripping current: 1 A - 2,000 A
Trigger voltage: 0 V - 600 V

RX Motor Protection Relay Take your motor protection to a new level. The RX Series provides more than just solid state overload or power protection relays. ...

over-current protection relay
over-current protection relay
SEL-351S

Protection System The SEL-351S Protection System offers comprehensive feeder and overcurrent protection perfect for industrial and utility feeder applications. Enhance ...

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Schweitzer Engineering Laboratories
phase unbalance protection relay
phase unbalance protection relay
MS2P49

... sensitive earth fault protection, the MS2P49 relay using solid state techniques, can be applied to detect earth currents down to 0.5% of the CT nominal current. The MS2P49 relay is a ...

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Mors Smitt BV
thermal protection relay
thermal protection relay
TOR-C, RTD, RTE

Setting range from 0,3 up to 800 A Direct mounting on contactor or separated with special kit Automatic reset and /or manual

phase sequence protection relay
phase sequence protection relay
RZ1FK116

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EMAS
over-current protection relay
over-current protection relay
AQ-110F

... connections. AQ 110 is a multipurpose arc flash protection unit and can be applied for variety of applications. AQ 110 can be used as a stand-alone unit or as a main unit of a more complex arc protection ...

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Arcteq Relays Ltd
phase loss protection relay
phase loss protection relay
FK-01

Trigger voltage: 380 V

Phase Failure Relay Features The phase protection relays are designed to protect the three-phase loads from damage ...

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Tense Electronic
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