Relays

How to choose this product

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.

404 companies | 3314 industrial products

Companies per page

34 products CROUZET
new CROUZET 17.5 mm | Chronos 2
DINrail time delay 17.5 mm | Chronos 2 CROUZET

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

new CROUZET 24 - 230 V | KNA3-YS series
Emergency stop 24 - 230 V | KNA3-YS series CROUZET

This safety relay serves as an emergency stop and gate monitoring capabilities. This one channel operation device assures...

new CROUZET 24 - 230 V | KNE3-YS series
Emergency stop 24 - 230 V | KNE3-YS series CROUZET

This out of the ordinary safety relay is specially built with an emergency stop and safety monitoring functions. This state of the art device has several remarkable...

new CROUZET 24 - 230 V | KZH2-YS, KZH3-YS
Safety for twohand controls 24 - 230 V | KZH2-YS, KZH3-YS CROUZET

This device is for monitoring of external contractors with Y1/Y2 feedback circuits,...

CROUZET 0.1 s - 1 h, 8 A | TUR, TBR, TLR series
Electronic multifunction time delay 0.1 s - 1 h, 8 A | TUR, TBR, TLR series CROUZET

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

CROUZET 0.1 s - 1 h, 10 A | OUR, PUR series
Plugin time delay 0.1 s - 1 h, 10 A | OUR, PUR series CROUZET

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

47 products FINDER France
new FINDER France 50 A | 67 series
Solar power 50 A | 67 series FINDER France

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...

FINDER France 6 A, 0.2 W | 32 series
PCB miniature electromechanical 6 A, 0.2 W | 32 series FINDER France

In high power, intermediate and sensitivity; solid state and low profile...

FINDER France 0.1 - 6 A, 0.17 W | 34 series
PCB lowprofile electromechanical 0.1 - 6 A, 0.17 W | 34 series FINDER France

This sensitive DC coil may contain up to 170mW that measures 5 mm wide. The technical...

FINDER France 10 A, 0.36 W | 36 series
PCB sugar cube 10 A, 0.36 W | 36 series FINDER France

Pole Changeover Contacts known as 1 Pole opens contact comes in miniature Sugar...

FINDER France 8 - 16 A | 40 series
Electromechanical plugin 8 - 16 A | 40 series FINDER France

FINDER is the go-to for any piece of equipment requiring precise and accurate...

new ABB Oy Distribution Automation REC615
Feeder protection REC615 ABB Oy Distribution Automation

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...

ABB Oy Distribution Automation REF630 IEC
Feeder protection REF630 IEC ABB Oy Distribution Automation

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...

ABB Oy Distribution Automation REG630 IEC
Generator protection REG630 IEC ABB Oy Distribution Automation

Relion® REG630 is a comprehensive generator management IED for protection, control, measuring and supervision of small and medium sized power generators. REG630 is a member of ABBs Relion® product...

ABB Oy Distribution Automation REM630 IEC
Motor protection REM630 IEC ABB Oy Distribution Automation

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...

ABB Oy Distribution Automation RET630 IEC
Transformer protection RET630 IEC ABB Oy Distribution Automation

Relion® RET630 is a comprehensive transformer management IED for protection, control, measuring and supervision of power transformers, unit and step-up transformers. RET630 features necessary control...

new ABB Oy Distribution Automation REF620 IEC
Feeder protection REF620 IEC ABB Oy Distribution Automation

Relion® REF620 is a native IEC 61850 feeder IED perfectly aligned for the protection, control, measurement and supervision of utility and industrial power distribution systems. REF620 offers extensive...

1 products Clippard
Clippard max. 100 psig, 5 l/min
Snapaction pneumatic max. 100 psig, 5 l/min Clippard

The Clippard Low Pressure Piloted Valves are specifically created ideally for small industrial...

16 products SCHMERSAL
SCHMERSAL SRB 031MC
Safety with timedelayed output SRB 031MC SCHMERSAL

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

SCHMERSAL 24 V | SRB 219IT
Multifunction safety 24 V | SRB 219IT SCHMERSAL

Multifunctional safety relay module for superior diagnostics and visualisation Fit for signal evaluation of outputs of safety...

SCHMERSAL SRB 301AN
Safety SRB 301AN SCHMERSAL

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

SCHMERSAL 24 - 230 V | SRB 308IT
Multifunction safety 24 - 230 V | SRB 308IT SCHMERSAL

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

SCHMERSAL 24 V | SRB 400C series
Safety monitoring 24 V | SRB 400C series SCHMERSAL

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

SCHMERSAL AES 113x series
Safety monitoring AES 113x series SCHMERSAL

This AES 113x microprocessor works especially well. It serves...

PEPPERL & FUCHS max. 30 VDC | KFD2-SR2-2.W.SM
Speed and standstill monitoring max. 30 VDC | KFD2-SR2-2.W.SM PEPPERL & FUCHS

1-channel signal conditioner 24 V DC supply PNP/push-pull,...

PEPPERL & FUCHS 4 - 20 mA | KFD, KFU series
Trip 4 - 20 mA | KFD, KFU series PEPPERL & FUCHS

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

PEPPERL & FUCHS max. 90 VDC
Trip max. 90 VDC PEPPERL & FUCHS

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

PEPPERL & FUCHS max. 30 V, IP20 | KFD0-RO-Ex2
Module max. 30 V, IP20 | KFD0-RO-Ex2 PEPPERL & FUCHS

Pepperl+Fuchs developed unique module switches that can be used in hazardous areas....

PEPPERL & FUCHS max. 30 VDC | KFD0-RSH-1 series
Module max. 30 VDC | KFD0-RSH-1 series PEPPERL & FUCHS

1-channel signal conditioner 24 V DC supply...

LEUZE ELECTRONIC 24 VAC / DC | MSI-CM series
Safety 24 VAC / DC | MSI-CM series LEUZE ELECTRONIC

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

LEUZE ELECTRONIC 24 VAC / DC | MSI-DT series
Configurable safety 24 VAC / DC | MSI-DT series LEUZE ELECTRONIC

This Safety Relay with adjustable delay time can be used for E-Stop and protective-door monitoring or AOPD monitoring in safety circuits in accordance with...

LEUZE ELECTRONIC 24 VAC / DC | MSI-SR5 series
Multifunction safety 24 VAC / DC | MSI-SR5 series LEUZE ELECTRONIC

Two devices can be connected to the MSI-SR5 Safety Relay at the inputs, either...

LEUZE ELECTRONIC 24 VAC  /DC | MSI-2H
Safety for twohand controls 24 VAC /DC | MSI-2H LEUZE ELECTRONIC

The MSI-2H Safety Relay is the link between two-hand-command devices and the machine control; it functions...

LEUZE ELECTRONIC 24 VAC / DC | MSI-MC3x
Multifunction safety 24 VAC / DC | MSI-MC3x LEUZE ELECTRONIC

The MSI-MC310 Safety Relay serves as evaluation unit for the application of Magnetically Coded Sensors. In combination with the MSI-MC310 Safety Relay, the MC3x Magnetically Coded...

LEUZE ELECTRONIC 24 VAC / DC | MSI-SR4
Safety 24 VAC / DC | MSI-SR4 LEUZE ELECTRONIC

On the off chance that safety switches or opto-electronic defensive gadgets are utilized for protecting risk zones, the MSI-SR4 safety relay makes the connection to the machine’s control...

3 products TURCK
TURCK max. 7 A
Safety max. 7 A TURCK

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

TURCK
Safety for twohand controls TURCK

Two-hand control stations of the DUO-TOUCH series meet all safety-related...

TURCK
Coupling TURCK

* Safe galvanic separation of all signal types * Level...

25 products HENGSTLER
HENGSTLER 24 VDC | H-462
PCB bistable power 24 VDC | H-462 HENGSTLER

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

HENGSTLER 36 VDC | H-464
Electromechanical 36 VDC | H-464 HENGSTLER

8 or 10 contacts max. 10 A switching and constant current Drive...

HENGSTLER 24 VDC | H-466
Electromechanical 24 VDC | H-466 HENGSTLER

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

HENGSTLER 24 VDC | H-467
Electromechanical 24 VDC | H-467 HENGSTLER

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

HENGSTLER 24 VDC | K-RAS
Electromechanical 24 VDC | K-RAS HENGSTLER

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

HENGSTLER 6 / 6 VDC | K-RP
PCB bistable power 6 / 6 VDC | K-RP HENGSTLER

1 change-over contact for max. 20 A 2 change-over contacts...

B&R Industrie-Elektronik X67
Safety X67 B&R Industrie-Elektronik

Safety shut-offs do not always have to involve a full machine shutdown. Smart, safe reactions to various situations provide safety without having to stop...

4 products PILZ
PILZ PNOZ
Safety PNOZ PILZ

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...

video PILZ PNOZmulti Mini
Configurable safety PNOZmulti Mini PILZ

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

PILZ PMDsrange, PMDsigma
Electronic supervision PMDsrange, PMDsigma PILZ

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

PILZ PNOZcompact Series
Safety monitoring PNOZcompact Series PILZ

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...

MITSUBISHI ELECTRIC EUROPE 24 VDC | QS90SR2SP
Safety 24 VDC | QS90SR2SP MITSUBISHI ELECTRIC EUROPE

The QS90SR2SP safety relay module allows safety I/O to be included in a conventional System Q controller, for when it is not cost effective to specify a dedicated safety controller. The...

1 products JOKAB SAFETY
JOKAB SAFETY Cat. 4/PL, e/SIL 3, IP 40, IEC 60529
Safety Cat. 4/PL, e/SIL 3, IP 40, IEC 60529 JOKAB SAFETY

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...

3 products ifm electronic
ifm electronic 250 V, 6 A, 114 x 50 x 105 mm, IP20 | G1502S
Safety for twohand controls 250 V, 6 A, 114 x 50 x 105 mm, IP20 | G1502S ifm electronic

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...

ifm electronic 250 V, 6 A, 100 x 25 x 105 mm, IP20 | G1501S
Safety monitoring 250 V, 6 A, 100 x 25 x 105 mm, IP20 | G1501S ifm electronic

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...

ifm electronic 250 V, 6 A, 100 x 25 x 105 mm, IP20 | G1503S
With safety semiconductor outputs 250 V, 6 A, 100 x 25 x 105 mm, IP20 | G1503S ifm electronic

Multifunctional with semiconductor outputs suitable for your applications. E-stop with cross-fault monitoring and optional simultaneity monitoring. Connection of mechanical safety switches and...

BANNER ENGINEERING CORP. 24 - 230 V | DUO-TOUCH SG series
Safety for twohand controls 24 - 230 V | DUO-TOUCH SG series BANNER ENGINEERING CORP.

Modules work with Banner STB self-checking touch buttons or can be retrofitted with existing mechanical palm buttons to create a complete, ergonomic two-hand control system. To ensure reliability, modules...

BANNER ENGINEERING CORP. max. 230 V | DUO-TOUCH series
Safety for twohand controls max. 230 V | DUO-TOUCH series BANNER ENGINEERING CORP.

Monitors a pair of mechanical push buttons or OTB optical touch buttons Permits machine operation only when the operator has both hands on the controls Designed...

BANNER ENGINEERING CORP. 20 ms, 24 V | IM-T series
Solidstate interface module 20 ms, 24 V | IM-T series BANNER ENGINEERING CORP.

Increases the switching current capacity of low voltage primary safety devices to 6 amps Serves as a relay for primary safety devices with OSSD solid-state...

BANNER ENGINEERING CORP. max. 6 A | EM series
Safety expansion module max. 6 A | EM series BANNER ENGINEERING CORP.

Banner’s extension modules are specifically created with safety in mind. These state-of-the-art modules provide additional safety outputs for a primary safety...

GE Digital Energy G60
Generator protection G60 GE Digital Energy

Built on the industry-leading UR platform, the G60 offers superior protection for medium and large generators, including large steam...

GE Digital Energy G30
Generator protection G30 GE Digital Energy

Built on the industry-leading UR platform, the G30 provides advanced protection for small to medium-sized steam, hydraulic...

GE Digital Energy 25 - 60 Hz| SR489
Generator protection 25 - 60 Hz| SR489 GE Digital Energy

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

GE Digital Energy GPM - S
Stator earth fault protection GPM - S GE Digital Energy

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

GE Digital Energy MIGII
Digital generator protection MIGII GE Digital Energy

The MIGII, part of the M II Family of economical and highly functional digital relays, provides comprehensive...

GE Digital Energy MIW II
Digital generator protection MIW II GE Digital Energy

The MIW II, a member of the M II Family of Relays, is a digital device that provides directional power and loss of field...

SIEMENS Smart Grid 7UT85
Differential protection for transformers 7UT85 SIEMENS Smart Grid

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...

SIEMENS Smart Grid 7UT86
Differential protection for transformers 7UT86 SIEMENS Smart Grid

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

SIEMENS Smart Grid 7UT87
Differential protection for transformers 7UT87 SIEMENS Smart Grid

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

SIEMENS Smart Grid 7SS52x
Distributed busbar and breaker failure protection 7SS52x SIEMENS Smart Grid

The SIPROTEC 7SS52 numerical protection is a selective, reliable and fast protection for busbar faults and breaker failure in medium, high and extra-high voltage substations with various possible busbar...

SIEMENS Smart Grid 7SS523
Distributed busbar and breaker failure protection 7SS523 SIEMENS Smart Grid

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...

SIEMENS Smart Grid 7SS60
Centralized busbar protection 7SS60 SIEMENS Smart Grid

The SIPROTEC 7SS60 system is an inexpensive numerical differential current protection for busbars in a centralized configuration. It is suitable for all voltage...

Honeywell Sensing and Control
Power Honeywell Sensing and Control

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

Honeywell Sensing and Control
Emergency stop Honeywell Sensing and Control

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

Johnson Electric 100 - 120 A, 230 VAC | LEDEX-EM series
Magnetic latching power 100 - 120 A, 230 VAC | LEDEX-EM series Johnson Electric

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

Johnson Electric 200 A, 240 VAC | LEDEX-BLP series
Magnetic latching power 200 A, 240 VAC | LEDEX-BLP series Johnson Electric

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...

SIEMENS Low-Voltage & Products 5TT4
Remote switch 5TT4 SIEMENS Low-Voltage & Products

Switching relays are used in residential, non-residential and industrial buildings for the purpose of contact multiplication. They can be used with safe isolation between coil...

SIEMENS Low-Voltage & Products 5TT6
Overcurrent 5TT6 SIEMENS Low-Voltage & Products

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...

SIEMENS Low-Voltage & Products 5TT3
Voltage 5TT3 SIEMENS Low-Voltage & Products

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/...

SIEMENS Low-Voltage & Products 5TT5
Emergency stop 5TT5 SIEMENS Low-Voltage & Products

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...

SIEMENS Low-Voltage & Products 5TT3
Level monitoring 5TT3 SIEMENS Low-Voltage & Products

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...

SIEMENS Low-Voltage & Products 2 - 20 VA | 5TT3
Line protection 2 - 20 VA | 5TT3 SIEMENS Low-Voltage & Products

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...

1 2 3 4 5 6 7 8 9 10
Filter by :
Refine the search
Relays
Extend the search
Search by manufacturer
Find a distributor
Search by catalog
Associated Terms

industrial relays

With DirectIndustry you can find a nearby distributor, contact a manufacturer for an estimate or a price, or examine product characteristics and specifications.