AC protection relays

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AC protection relays | Choosing the Right Protection Relay
Protection relays enable the safe distribution of electricity from the grid. Their function is to detect anomalies in the grid that could lead to dangerous situations and, if necessary, interrupt the electrical circuit for as long as necessary. They provide differential, overcurrent, and arc flash protection. This protection is ensured by the relay’s ability to respond rapidly. A relay can consist of several modules, each with its own function.
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arc flash protection relay
arc flash protection relay
D0920 series

... circuit breakers with a 220/250 Vdc shunt trip coil. The D0920 has one output indication relay with an isolated normally-open contact, and one output indication relay with an isolated normally-closed contact. Additional ...

current protection relay
current protection relay
SEL-300G

... with IEEE turbine protection standards, SEL has applied its expertise in the production of microprocessor-based relays to create the SEL-300G, a generator relay that includes several unique features designed ...

earth-leakage protection relay
earth-leakage protection relay
X52DSX

... 0,2÷5s • One or two operating trip relays. • Output relays test. • Manual (local or remote) or programmable automatic reset. • Continuous control of wiring connection between the relay and the CT: ...

current protection relay
current protection relay
3CR series

Tripping current: 15 A

... 3CR series current type motor starting relay is designed for single-phase AC applications with motor start winding currents up to 15 Amps. It is applicable on both split phase and capacitor start motors. The 3CR relay ...

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

... WG series electronic differential protection relay for connection to external WG / WGS / WGC series toroidal transformers These are highly reliable electronic relays with the option of a fixed or adjustable ...

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

... Electronic earth leakage protection relay, used to connect to the earth leakage transformers WG / WGC Series These electronic relays offer a high reliability, with the option of a fixed or adjustable ...

feeder protection relay
feeder protection relay
SIL-G

Trigger voltage: 24 V - 230 V

... SIL-G Advanced Feeder Protection Protection for Renewable Energy Facilities, Industrial Plants, and Secondary Network The SIL-G is a complete protection and control relay used in primary ...

over-voltage protection relay
over-voltage protection relay
VP series

Trigger voltage: 230, 275 V

... With thermal separation device • Visual indication of a fault in the equipment • Remote signalling of the protection status • Plug-in protection modules which facilitate maintenance ...

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

Tripping current: 5 A
Trigger voltage: 220 V

... detection, the AFR-M offers exceptional protection capabilities, helping to minimize arc flash damage for personnel and equipment. High-Speed Tripping for arc flash protection The AFR-M arc flash protection ...

earth-leakage protection relay
earth-leakage protection relay
ELR-6MS

... Output contacts (3 DO): Main trip relay — DPDT, load capacity 8 A @ 250 Vac, 8 A @ 30 Vdc.

  • Auxiliary ground fault relay — SPDT, load capacity 16 A @ 250 Vac, 16 A @ 30 Vdc.
  • Auxiliary ground check relay
  • ...

    earth-leakage protection relay
    earth-leakage protection relay
    ELR-1E series

    Trigger voltage: 12 V - 415 V

    ... Adjustable tripping and delay time. Earth leakage relay with 1 operation threshold, flush mount. External CT. Introduction Range ELR Product name ELR-1E Product type Residual current protection relay Current ...

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    Contrel elettronica
    earth-leakage protection relay
    earth-leakage protection relay
    ELR-2 series

    Trigger voltage: 24, 48, 110, 240, 415 V

    ... indicator (TRIP). Fail safe. Earth leakage relay with 2 operation thresholds, flush mount. External CT. Fail safe. Introduction Range ELR Product name ELR-2 Product type Residual current protection relay Current ...

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    Contrel elettronica
    earth-leakage protection relay
    earth-leakage protection relay
    ELR-3A

    Trigger voltage: 24 V - 230 V

    ... delay time. Residual current protection relay with external CT. 2 operation threshold. Adjustable tripping and delay time. Introduction Range ELR Product name ELR-3A Product type Residual current protection ...

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    Contrel elettronica
    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 ...

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    DOSSENA
    over-current protection relay
    over-current protection relay
    ZRX8

    ... barrier in ATEX Zone 2/22 Compact 22.5 mm format Suitable for RDX8 or other sensor Removable terminals   Cycle before dangerous failure: B10d = 2,000,000 at 2A Risk duration: 10 ms max Cable severing protection: ...

    overload relay
    overload relay
    GSR1 series

    Tripping current: 0.1 A - 0.16 A
    Trigger voltage: 690 V

    ... GSR1 series thermal overload relay is used in AC 50Hz (or 60Hz); rated voltage is up to 690V, for protecting AC motor against overload or phase-breaking. ...

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    Tianshui 213 Electrical Apparatus Group CO.,LTD.
    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 ...

    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 • Auto reset feature available Brief Specifications Measuring ...

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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 ...

    current protection relay
    current protection relay
    RM2I

    ... Current relay 2 Module Min or max alarm, selectable on field Input 5A or 1A Adjustable set point, hysteresis and delay Field selectable negative or positive security (fail safe) Intervention inhibition when turning ...

    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, ...

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    TELE Haase Steuergeraete GmbH
    power protection relay
    power protection relay
    DMP300

    Tripping current: 1, 2, 5 A
    Trigger voltage: 110, 220 V

    ... design that suitable for severe environment. The measurement, protection AI isolation sampling channels are fully independent. The specialized analog and digital filtering design and high-accuracy AC sampling technology ...

    temperature protection relay
    temperature protection relay
    RZ1PK116

    Trigger voltage: 115 V - 240 V

    phase loss protection relay
    phase loss protection relay
    FAZ series

    These are the devices used to prevent the motors from being damaged by overheating due to the lack of phase or voltage imbalance and to prevent the problems that may arise from the phase sequence error. There are different models working according to ...

    phase protection relay
    phase protection relay
    MS2V73

    ... High speed differential protection for various items of power system plant including generators, busbars, motors & the individual windings of power transformers and for restricted earth fault applications. The MS2V73 relay ...

    voltage protection relay
    voltage protection relay
    EPPC02

    Tripping current: 10 A
    Trigger voltage: 250 V

    ... Single and three phase protection Phase failure (loss phase) protection Phase sequence protection Adjustable voltage protection Over voltage and/or low voltage protection Contact ...

    over-current protection relay
    over-current protection relay
    XMR-A

    ... fault recording • 64 sample for cycle measurement for accuracy of protection element COMMUNICATION SECURITY Communication Security through redundancy protocol and Cyber Security ...

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    THYTRONIC
    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 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 voltage. - Asymmetry : ~30% ...

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    Tense Electronic
    thermal protection relay
    thermal protection relay
    EOL Series

    Tripping current: 0.1 A - 150 A

    ... Wide adjustable current range (5:1) ‧ Phase failure, over current, inrush current, phase unbalance protection ‧ Quick response protection within 3 seconds ‧Adjustable trip class 5/10/20/30 ‧4-in-1 ...

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