Single-phase protection relays

Do you need help making a decision?  Take a look at our buying guide
24 companies | 59 products
exhibit your products

& reach your clients in one place, all year round

Exhibit with us
Search
Single-phase protection relays | Choosing the Right Protection Relay
Before you buy a protective relay, there are a few more things to bear in mind: What is the current used in your grid? It is essential to know what type of current is used in the grid for which the relay is intended: direct current, alternating current, single-phase, or three-phase. What incidents do you want to prevent? You can configure the relay to trigger when it detects certain faults or malfunctions that you have previously defined. The relay...
{{#pushedProductsPlacement4.length}} {{#each pushedProductsPlacement4}}
{{product.productLabel}}

{{product.productLabel}} {{product.model}}

{{#if product.featureValues}}
{{#each product.featureValues}} {{content}} {{/each}}
{{/if}}
{{#if product.productPrice }} {{#if product.productPrice.price }}

{{product.productPrice.formattedPrice}} {{#if product.productPrice.priceType === "PRICE_RANGE" }} - {{product.productPrice.formattedPriceMax}} {{/if}}
{{/if}} {{/if}}
{{#if product.activeRequestButton}}
{{/if}}
{{product.productLabel}}
{{product.model}}

{{#each product.specData:i}} {{name}}: {{value}} {{#i!=(product.specData.length-1)}}
{{/end}} {{/each}}

{{{product.idpText}}}

{{productPushLabel}}
{{#if product.newProduct}}
{{/if}} {{#if product.hasVideo}}
{{/if}}
{{/each}} {{/pushedProductsPlacement4.length}}
{{#pushedProductsPlacement5.length}} {{#each pushedProductsPlacement5}}
{{product.productLabel}}

{{product.productLabel}} {{product.model}}

{{#if product.featureValues}}
{{#each product.featureValues}} {{content}} {{/each}}
{{/if}}
{{#if product.productPrice }} {{#if product.productPrice.price }}

{{product.productPrice.formattedPrice}} {{#if product.productPrice.priceType === "PRICE_RANGE" }} - {{product.productPrice.formattedPriceMax}} {{/if}}
{{/if}} {{/if}}
{{#if product.activeRequestButton}}
{{/if}}
{{product.productLabel}}
{{product.model}}

{{#each product.specData:i}} {{name}}: {{value}} {{#i!=(product.specData.length-1)}}
{{/end}} {{/each}}

{{{product.idpText}}}

{{productPushLabel}}
{{#if product.newProduct}}
{{/if}} {{#if product.hasVideo}}
{{/if}}
{{/each}} {{/pushedProductsPlacement5.length}}
over-voltage protection relay
over-voltage protection relay
111-INSIDER-P

Trigger voltage: 133 V

... its output relay and directly disconnects the pump motor. The relay then begins its user-selectable restart delay (dry-well recovery) timer. When the timer counts to zero or power is ...

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 ...

overload relay
overload relay
PS11-R, PS16R

Trigger voltage: 230, 115 V

The PS-R single-phase devices in this series are underloaded by undercurrent, and operated without any requirements in terms of level sensors for dry running. The single-phase ...

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 ...

current protection relay
current protection relay
4CR series

Tripping current: 25 A

KLIXON® 4CR current type motor starting relay is a compact, high capacity relay, designed for universal application to split phase and capacitor start, single-phase ...

thermal protection relay
thermal protection relay
T119

T-119 protective relay for monitoring the windings of your electrical transformer Temperature relay with T-119 The T119 is a unit developed to monitor the temperature of MV cast ...

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 ...

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 ...

See the other products
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 ...

See the other products
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 ...

See the other products
DOSSENA
over-voltage protection relay
over-voltage protection relay
VPRD2M

Tripping current: 5 A
Trigger voltage: 127 V - 288 V

• 3 phase and single phase RMS voltage protection relay • Monitors: Over / Under Voltage, Phase asymmetry, Phase failure, ...

over-current protection relay
over-current protection relay
900CPR-1-BL-U

Tripping current: 3, 5 A
Trigger voltage: 85 V - 270 V

Single phase RMS current protection from Over / Under current • Accuracy : ± 1% of current • Measuring range of : 0.1A to 999A depending on CT selection • Certifications: CE & RoHS Measuring ...

distance protection relay
distance protection relay
SIPROTEC 7SA series

... earth)-fault protection for single and three-phase tripping (50N, 51N, 67N) •Tele (pilot) protection (85) •Fault locator (FL) •Power swing detection / tripping (68/68T) •Phase-overcurrent ...

See the other products
SIEMENS Energy automation and smart grid
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 ...

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 ...

See the other products
IME Spa
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 ...

over-voltage protection relay
over-voltage protection relay
PAO series

Trigger voltage: 24, 240 V

... level Imax, 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 energises ...

See the other products
Crompton Instruments
single-phase protection relay
single-phase protection relay

Tripping current: 63 A
Trigger voltage: 275, 175 V

... under voltage protective device considered modular design. The circuit board adopted good quality Latching relays and others components with reliable performance. When the power supply is unstable (voltage ...

See the other products
Yueqing RunEasy Electronic Technology Co.,Ltd.
over-voltage protection relay
over-voltage protection relay
KPFV51x series

Trigger voltage: 100 V - 480 V

KPFV51x - SINGLE PHASE - FREQUENCY AND VOLTAGE GUARD Under and Over Voltage and Frequency Protection Adjustable Voltage and Frequency Deviation Set points "Pathfinder" function Optional ...

See the other products
Meagacon AS
over-voltage protection relay
over-voltage protection relay
RMV-142D

Tripping current: 8 A
Trigger voltage: 250 V

DEIF's RMV protective voltage relays are applied for generator, motor and transformer protection against adverse system voltage conditions. The versatile unit features a number of adjustable ...

See the other products
DEIF
overload relay
overload relay
T series

Tripping current: 3 A - 50 A

3/4 inch Motor Protector for single phase motors like hermetic compressors or water pumps from 1/20HP to about 1HP. Various configurations available. Available for automatic or manual reset.

See the other products
Electrica s.r.l.
overload relay
overload relay
T— Protector

Tripping current: 0.6 A - 25 A
Trigger voltage: 115 V

T motor protector is designed to protect single phase induction motors against overload and locked rotor conditions up to 65AI • AUTOMATIC RESET: Main application is protection ...

phase loss protection relay
phase loss protection relay
TPM5

Tripping current: 5 A

Protection relay against overload, underload, and phase loss. With display. Codes and references - 10002217 TPM5-230 - 10002218 TPM5-400 - 10002451 TPM5/5-230 - 10002452 TPM5/5-400 Specifications - ...

See the other products
Toscano Linea Electronica
over-current protection relay
over-current protection relay
MS2C74

Overcurrent protection for various items of power system plant as frame earth leakage protection of metal clad switchgear & tank earth fault protection The MS2C74 ...

See the other products
Mors Smitt BV
temperature protection relay
temperature protection relay
RZ1PK116

Trigger voltage: 115 V - 240 V

overload relay
overload relay
MBS series

... This offers uxiliary, alarm connections and a specific version for single phase motors. The breaker provides motor protection when used with contactors.

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 ...

voltage protection relay
voltage protection relay
S91

Tripping current: 0 A - 16 A
Trigger voltage: 220 V - 415 V

... modes: single-phase or three-phase measurement, maximum current range 5 or 16 A, operation with or without PTC. Available model for 230V power supply (S91), and model for 380V power supply ...

exhibit your products

& reach your clients in one place, all year round

Exhibit with us