Relays

277 companies | 2662 products
Relays
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security relay / transformer - RET620 IEC

Relion® RET620 is a dedicated transformer protection and control IED for two-winding power transformers, unit and step-up transformers. RET620 offers extensive possibilities to tailor the configurations to meet requirements of employed power transformer vector groups and to coordinate the applied transformer neutral earthing principles with the relevant earthfault protection schemes. RET620

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security relay / feeder - REC615

REC615 is a dedicated grid automation IED (intelligent electronic device) designed for remote control and monitoring, protection, fault indication, power quality analyzing and automation in medium-voltage secondary distribution systems, including networks with distributed power generation, with secondary equipment such as medium-voltage disconnectors, switches and ring-main units. The ...

security relay / feeder - REF630 IEC

Relion® REF630 IED is constructed to be world-class for managing utility and distribution substations. It is built to protect, manage as well as measure and supervise at the...

security relay / generator - REG630 IEC

Relion REG630 was specially developed to give protection, control, measuring and supervision of small and medium sized power generators. Since this is part of the ABBs Relion® product line, this means that...

security relay / engine - REM630 IEC

ABB motor protection boasts a comprehensive motor management IED for protection,control,measuring and supervision of medium and large motors in medium industrial power systems.The Motor Protection...

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power relay / solar - 50 A | 67 series

From the leaders in innovating relays and timers, comes their newest addition to their top of the line industrial relays, the Solar relay 50 A.Designed as Power...

electromechanical relay / bistable / high-speed - 8 A | RR series

The FINDERNET's RR Series offer a fast acting relay 8A. It is used in control and...

bistable relay / power - 8 A, 24 - 250 V | RB series

This unit belongs to the RB series. It is a unit that has changeover...

static relay / modular - 5 - 30 A | 77 series

Zero-crossing switch-on is part of the relays and timers series of equipment...

relay with force guided contacts - 6 A | 7S series

For safety applications, with class A forcibly guided contact relays...

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differential relay / security / transformer - 7UT85

The 7UT85 is specifically designed for differential protection of two winding transformers from any voltage levels. It can be a universal control, automation and monitoring...

differential relay / security / transformer - 7UT86

On the basis of the SIPROTEC 5 system, the transformer differential protection 7UT86 is a universal protection, control and automation device. It...

differential relay / security / transformer - 7UT87

The 7UT87 Transformer differential protection is required for multiple winding transformers. With 5 sides and measuring...

busbar relay / circuit breaker - 7SS52x

The SIPROTEC 7SS52 numerical protection offers fast, reliable and selective protection for busbar faults and breaker failure. This occurs in medium, high and extra-high voltage substations where there are numerous possible busbar configurations.

All...

busbar relay / circuit breaker - 7SS523

The SIPROTEC 7SS52 has a modular design optimized for protecting single, double, or triple busbar systems with up to 48 bays, 24 sectionalizing isolators, 16 bus couplers, and 12...

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security relay / generator - G60

Designed on the industry-leading UR platform, the G60 provides paramount protection for medium and large generators, with...

security relay / generator - G30

The G30 is a system designed for generator protection, and is suitable for applications where the transformer and generator are in the same protection...

security relay / generator - 25 - 60 Hz| SR489

Designed for small- and medium-sized generators, the SR489 generator protection system provides superior protection...

security relay / earth fault / stator - GPM-S

Stator ground module works in combination with UR G60 to provide a 100% stator ground fault protection that is operational...

security relay / electronic / generator - G650

G650 Generator Protection and Control System is designed for full safety of small- and medium-sized generators. It is also...

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control relay / shut-off / speed - max. 30 VDC | KFD2-SR2-2.W.SM

Pepperl-Fuchs standstill and rotational direction monitor has a 1-channel signal conditioner with 24 V DC supply.
...

trip relay - 4 - 20 mA | KFD, KFU series

Pepperl+Fuchs has developed a new system that will revolutionize the safety industry....

trip relay - max. 90 VDC

Trip amps keep track of limit figures regarding temperature ranges, flows, pressures...

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safety relay - X67

Safety shut-off valves from B&R employ an intelligent, dispersed and integrated safety technology that smartly protects the machine without turning it off or hampering the production...

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digital relay / time delay / multifunction - 0.1 s - 1 h, 8 A | TUR, TBR, TLR series

This multi-range timer features an LED status indicator. It can have either...

time delay relay / plug-in - 0.1 s - 1 h, 10 A | OUR, PUR series

- Multi-function or mono-function
- Multi-range
- Multi-voltage
-...

time delay relay / DIN rail - 17.5 mm | Chronos 2

Relay or solid state output
Multi-function or mono-function
...

digital relay / time delay / miniature - 0.1 s - 10 h, 5 A | RTMA series

Known as the DIN rail mounted timers or the RTM miniature timers and comes in...

sizing relay / control / current - max. 10 A, 230 V | EI series

Current transformer fitted by passing a cable through the front
AC current treshold...

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safety relay - PNOZ

The PNOZ X safety relays are made to be sturdy and safe to use. These are used in many safety functions and you only need one product for each function. Each unit has...

safety relay / configurable - PNOZmulti Mini

Pilz has made this scalable unit that works with an easy to configure body and is highly expandable. This product works with a control...

digital relay / monitoring - PMDsrange, PMDsigma

Electrical safety is the focus on electronic monitoring relays, for example, when monitoring temperature, current, voltage or similar variables. Using electronic relays will reduce...

control relay / safety - PNOZcompact Series

Growing company PilZ is known for being automation wizard together with its booming PNOZ safety relays on its best functional level. The PNOZ developed a compact...

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dual over-current relay - 5TT6

The current relays monitor is a product of great ingenuity and brilliance. In regard to emergency lighting's the relays are of utmost importance for the flow...

voltage relay - 5TT3

Voltage relays are used for plant and device protection, detection of N-conductor breaks, short-time voltage interruptions and for supplying emergency light devices. They are supplied as under/...

emergency stop relay - 5TT5

EMERGENCY-STOP circuits are mainly for safety protocols for all laboratory devices and industrial parts. These modules meet the most critical demands with high consideration...

control relay / level - 5TT3

Level relays are used for the monitoring and control of conductive, non-combustible liquids and powders. They ensure overflow and dry run protection. Due to their sensor performance, the devices can also be used for general resistance monitoring.

LED displays:
- Green LED: lights up when operational voltage is applied
- Yellow LED: lights up if MIN...

security relay / line - 2 - 20 VA | 5TT3

Line circuit relays are used to interrupt circuits and prevent electromagnetic fields in circuits where there are currently no active loads. If the loads are disconnected, and the line circuit relay measures a usage of only 2 to 20 VA adjustable it disconnects the cable to the supply voltage and switches over to extra-low...

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safety relay - 24 VDC | QS90SR2SP

The QS90SR2SP safety relay module supports the safety I/O to be installed in the System Q controller in the event it is not economical to identify a dedicated safety controller. The module can be...

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safety relay - 24 VDC | QS90SR2SP

This unit uses a power relay that will manage signals and protect units from...

safety relay - 24 VDC | QS90SR2SP

Description
The FF-SRS5924 Emergency Stop Modules are designed...

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security relay / overload - 112 - 800 A | CWM

This product presents an advanced technology as well as safety and effortless installation. The WEG's 3-pole contractors, aside from easy installation,...

security relay / overload - 9 - 105 A | CWM

WEG makes three-pole contactors that works with an easy...

security relay / overload - 9 - 105 A | CWM

Monitoring Relays RPW is a product developed to monitor sensitive electronic circuits that need to be protected from noises, within the line....

control relay - SRW01

The WEG Smart Relay SRW01 low-voltage electric motor management system has reliable technology and network communication capabilities. Its modular concept makes it suitable for applications. The low-voltage electric motors...

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safety relay - Cat. 4/PL, e/SIL 3, IP 40, IEC 60529

ABB Jokab universal relay is a safety relay providing several input options for multiple safety devices and levels of risk. ABB Jokab relays are the most flexible and highest safety...

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bistable relay / power / printed circuit - 24 VDC | H-462

The Hengstler GmbH 402 safety relay with 4 to 6 contacts can handle a maximum 10A switching and...

electromechanical relay - 36 VDC | H-464

The 464 relay comprises of around 8/10 contacts. It can withstand...

electromechanical relay - 24 VDC | H-466

Including four, six, eight or ten contacts, this device offers a switching and constant current...

electromechanical relay - 24 VDC | H-467

Safety relays help check and monitor safety systems and provides economical solutions for smaller machines....

electromechanical relay - 24 VDC | K-RAS

This product has many great features to offer its users, including four contacts,...

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magnetic latching relay / power - 100 - 120 A, 230 VAC | LEDEX-EM series

The Johnson Electric product line for smart meters supports with the necessities of the electric power businesses smart grid enterprise. The...

magnetic latching relay / power - 200 A, 240 VAC | LEDEX-BLP series

Presenting a revolutionary new product. The Johnson Disconnect relays are top of the line creation. Assembled with state of the art parts and components. The Ledex-EM...

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safety relay - 24 VAC / DC | MSI-CM series

The MSI-CM Safety Relay is used as a contact extension module in accordance with DIN EN 60204‑1/VDE 0113 Part 1 for contact...

safety relay / configurable - 24 VAC / DC | MSI-DT series

LEUZE MSI-DT Series are designed and developed as safety relays with high-tech electronics that comprises their adjustable delay time that can be used for E-stop or protective-door...

safety relay / multifunction - 24 VAC / DC | MSI-SR5 series

The MSI-SR5 Safety Relay is designed to allow two devices to be connected at the inputs...

safety relay / for two-hand controls - 24 VAC  /DC | MSI-2H

The MSI-2H Safety Relay engineered by Leuze Electronic, performs as a link between the machine...

safety relay / multifunction - 24 VAC / DC | MSI-MC3x

The world class quality MSI-MC310 Safety Relay is used as an evaluation unit for magnetically coded safety system that can be used in the food, pharmaceutical...

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safety relay - ES4P series

A part of the Moeller® series, this device is an easySafety control relay. Both standard and safety functions can be found in this device. Indeed, these control relays have a great many safety features, such as the emergency-stop and position switches. These provide a high level...

safety relay / control - ESR5

The potential hazards of machine movement must be reliably managed. The Eaton ESR5...

control relay - easy 500/700/800

The Control relay easyRelay Moeller® series that includes the easy500, easy700 and easy800...

control relay / sizing / phase - EMR5-AWN/EMR5-AWM/EMR5-W

The EMR4/EMR5 range of measuring and monitoring relays is designed for use in various applications...

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safety relay - max. 7 A

Machine and system hazards have decreased significantly with the advancement of present...

safety relay - max. 7 A

The Duo-Touch series are designed with two handed control stations to provide an exceed...

safety relay - max. 7 A

The TURCK analog signal isolators provide safe galvanic separation for all signal types....

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safety relay / for two-hand controls - 250 V, 6 A, 114 x 50 x 105 mm, IP20 | G1502S

Multifunctional with relay outputs suitable for your applications.

Safety outputs with switch-off delay, time ranges 0.25...10 seconds.
E-stop with cross-fault monitoring and optional simultaneity monitoring.
Connection of mechanical...

safety relay / control - 250 V, 6 A, 100 x 25 x 105 mm, IP20 | G1501S

Standstill safely detected!
Rotational speed detection by 2 sensors.
Redundant structure of the hardware.
Redundant evaluation of the pulse sequences.
Relay with positively-driven contacts.
4 switch points selectable.
Operating principle
The...

safety relay / with semiconductor outputs - 250 V, 6 A, 100 x 25 x 105 mm, IP20 | G1503S

IFM multifunctional safety relay with semiconductor outputs feature E-stop with cross-fault and optional simultaneity monitoring. Used for connecting mechanical safety switches and fail-safe sensors, one advantage of the safety relay is allowing...

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safety relay / with time-delayed outputs - SRB 031MC

Fit for signal evaluation of outputs of safety magnetic switches
Drop-out delay can be set between 0,4...

safety relay / multifunction - 24 V | SRB 219IT

The SCHMERSAL multi-functional safety relay module offers exceptional diagnostics and superior visualization. The module is appropriate...

safety relay - SRB 301AN

This device is an SRB 301AN model and it comes from a series of general process...

safety relay / multifunction - 24 - 230 V | SRB 308IT

Multifunctional safety relay module for superior diagnostics and visualisation
Suitable for signal processing of...

control relay / safety - 24 V | SRB 400C series

The SRB 400C Series possesses two-function safety monitoring module (double evaluation). Level...

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How to choose this product

relay

A relay is a control mechanism that activates or deactivates one or several parts of an electrical circuit. The two main categories are electromechanical and solid state relays.

Applications

These devices are used primarily to remotely switch a device or a circuit on or off. Remote electromechanical or electronic switching protects the user from possible danger associated with direct switch or contactor use, and makes possible automated switching. Some relays are used for security and protection. At activation thresholds, relays are used to control current, voltage, or a signal level. Time-delay relays exist as well.

Technologies

Relays exist in mechanical form, with electromagnets moving contacts when energized. Normally open or normally closed relays change position when activated by an electrical signal. Compact, solid-state relays consist of semiconductors and have no moving parts.

How to choose

Choice of a relay depends on intended use. For example, a time-delay relay is activated with a predetermined lapse after receiving a signal. Current strength must also be considered. Solid state relays cannot handle currents of the same strength as electromechanical models. On the other hand, solid state relays offer faster switching speeds.

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