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. These...
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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 use and arc-flash ...

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Littelfuse
overload relay
overload 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 an optimized ...

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ABB Oy Distribution Automation
differential protection relay
differential protection relay
SIPROTEC 7UT82

... 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 and contain ...

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SIEMENS Energy automation and smart grid
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 your quality of ...

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Schweitzer Engineering Laboratories
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 protection, ...

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 lines. ...

over-voltage protection relay
over-voltage 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 relay ...

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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 in industrial and ...

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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 signal of tripping. ...

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FANOX ELECTRONIC
current protection relay
current protection relay
CRC-12

Tripping current: 0.1 A - 16 A
Trigger voltage: 24 V - 250 V

... - **Physical Characteristics:** Relay housing width 18 mm, clip-on DIN rail. Adjustment via front levers. - **Features:** - Circuit protection: allows triggering an alarm or cutting power in case of overcurrent ...

phase loss protection relay
phase loss protection relay
CRV1-31 series

Trigger voltage: 300 V - 500 V

... CRV1-31 relay switches when the voltage of one of the phases exceeds the minimum or maximum thresholds and in case of phase reversal: - Electrical: CRV1-31: for three- phase ...

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 to 48 busbar sections ...

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Chongqing Blue Jay Technology Co. Ltd
earth-leakage protection relay
earth-leakage protection relay
PR 260

... The PR 260 electric motor protection relay, known as the motor management relay, is designed for motor protection and control, which integrates protection, control, and ...

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Chongqing Blue Jay Technology Co. Ltd
under-voltage protection relay
under-voltage 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 relay • ...

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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 alternating, ...

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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 generate alternating, ...

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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 thanks ...

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DOSSENA
under-voltage protection relay
under-voltage 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 in demanding ...

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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 relay ...

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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. By using ...

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, 110-240V AC; 3 CO ...

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TELE Haase Steuergeraete GmbH
phase sequence protection relay
phase sequence protection relay
RZ1FK116

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EMAS
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 phase ...

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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 ...

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 system through ...

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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 caused by mains ...

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Tense Electronic
level protection relay
level protection relay
MC Line

... DIGITAL RELAYS FOR PROTECTION, MONITORING AND CONTROL The MC line has been designed to offer to the market a very competitive protective relay responding to the latest requirements ...

thermal protection relay
thermal protection relay
RHU & RHN Series

Tripping current: 0.1 A - 38 A

... of carbon emissions Comply with IEC, and China GB standard Certificate : CSA, UL Comply with RoHS, CE ‧ Phase failure protection‧Trip class : 10A ...

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TECO ELECTRIC & MACHINERY Co., Ltd.
motor protection relay
motor protection relay
MPR-100

... of additional specific protection functions for motor industrial applications. Its versatility makes it the perfect solution for oil & gas, minery and all heavy-duty environments. Applications Metering & protection ...

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Orion Italia
voltage protection relay
voltage protection relay
NPR series

Tripping current: 0 A - 5 A

... The protection relay for the capacitor bank (NPR series) monitors the three- phase capacitor banks in medium-voltage reactive power compensation systems. It can recognize various hazardous ...

phase loss protection relay
phase loss protection relay

... failure of the power supply structure to prevent three- phase motors from overheating and damage. Motors are equipped with Thermic-magnetic relay, a vital component that is installed for their protection. ...

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ENTES
over-voltage protection relay
over-voltage protection relay
SM 500

... Controls, is an under voltage and overvoltage protection relay that functions as a protection against phase loss and phase reversal. This device is capable of being configured ...

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