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Installation relays

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Electromagnetic relayPK- 1P 24V AC / DC 1P 16A contact

Electromagnetic relayPK- 1P 24V AC / DC 1P 16A contact

HEMPIS Sp. z o.o.
€5.63 +VAT
PLN 26.53
  • Manufacturer: F&F FILIPOWSKI SPÓŁKA JAWNA
Supplier
HEMPIS Sp. z o.o.
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Thermal relay 0.24-0.4A ZE-0.4 014300

Thermal relay 0.24-0.4A ZE-0.4 014300

TT Partner Artur Krupa
€29.51 +VAT
PLN 139.03
  • EAN: 4015080143000
  • Manufacturer: eaton
Supplier
TT Partner Artur Krupa
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Electromagnetic relay 12V AC / DC 2x8A

Electromagnetic relay 12V AC / DC 2x8A

HEMPIS Sp. z o.o.
€7.66 +VAT
PLN 36.11
  • Manufacturer: ZAMEL SPÓŁKA Z OGRANICZONĄ ODPOWIEDZIALNOŚCIĄ
Supplier
HEMPIS Sp. z o.o.
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Electromagnetic relay 48V AC / DC 2x8A

Electromagnetic relay 48V AC / DC 2x8A

HEMPIS Sp. z o.o.
€6.42 +VAT
PLN 30.24
  • Manufacturer: ZAMEL SPÓŁKA Z OGRANICZONĄ ODPOWIEDZIALNOŚCIĄ
Supplier
HEMPIS Sp. z o.o.
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Electromagnetic relay 24V AC / DC 2x8A

Electromagnetic relay 24V AC / DC 2x8A

HEMPIS Sp. z o.o.
€7.66 +VAT
PLN 36.11
  • Manufacturer: ZAMEL SPÓŁKA Z OGRANICZONĄ ODPOWIEDZIALNOŚCIĄ
Supplier
HEMPIS Sp. z o.o.
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Electromagnetic relay 12V AC / DC 16A

Electromagnetic relay 12V AC / DC 16A

HEMPIS Sp. z o.o.
€6.57 +VAT
PLN 30.95
  • Manufacturer: ZAMEL SPÓŁKA Z OGRANICZONĄ ODPOWIEDZIALNOŚCIĄ
Supplier
HEMPIS Sp. z o.o.
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Electromagnetic relay 230V AC 2x8A

Electromagnetic relay 230V AC 2x8A

HEMPIS Sp. z o.o.
€7.82 +VAT
PLN 36.85
  • Manufacturer: ZAMEL SPÓŁKA Z OGRANICZONĄ ODPOWIEDZIALNOŚCIĄ
Supplier
HEMPIS Sp. z o.o.
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Electromagnetic relay 230V AC 16A

Electromagnetic relay 230V AC 16A

HEMPIS Sp. z o.o.
€5.73 +VAT
PLN 26.98
  • Manufacturer: ZAMEL SPÓŁKA Z OGRANICZONĄ ODPOWIEDZIALNOŚCIĄ
Supplier
HEMPIS Sp. z o.o.
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24V AC / DC 16A electromagnetic relay

24V AC / DC 16A electromagnetic relay

HEMPIS Sp. z o.o.
€4.90 +VAT
PLN 23.07
  • Manufacturer: ZAMEL SPÓŁKA Z OGRANICZONĄ ODPOWIEDZIALNOŚCIĄ
Supplier
HEMPIS Sp. z o.o.
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Thermal relay 4-6A ZB12-6 278439

Thermal relay 4-6A ZB12-6 278439

TT Partner Artur Krupa
€26.38 +VAT
PLN 124.28
  • EAN: 4015082784393
  • Manufacturer: eaton
Supplier
TT Partner Artur Krupa
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Relay: electromagnetic; DPDT; Ucoil: 24VAC; 10A / 110VAC

Relay: electromagnetic; DPDT; Ucoil: 24VAC; 10A / 110VAC

HEMPIS Sp. z o.o.
€3.63 +VAT
PLN 17.11
Supplier
HEMPIS Sp. z o.o.
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Siemens Installation relay 16A 2CO 230V / 400V AC 110V DC (5TT4217-1)

Siemens Installation relay 16A 2CO 230V / 400V AC 110V DC (5TT4217-1)

Morele.net
€27.78 +VAT
PLN 130.89
  • Manufacturer: Siemens
Supplier
Morele.net
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Eaton Installation relay 20A 4Z 230V AC Z-TN230 / 4S (265579)

Eaton Installation relay 20A 4Z 230V AC Z-TN230 / 4S (265579)

Morele.net
€28.66 +VAT
PLN 135.03
  • Manufacturer: Eaton
Supplier
Morele.net
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Hager Polo Installation relay 16A 2NO 0R 230V AC ERC216

Hager Polo Installation relay 16A 2NO 0R 230V AC ERC216

Morele.net
€12.42 +VAT
PLN 58.53
  • Manufacturer: Hager Polo
Supplier
Morele.net
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Eaton Installation relay 20A 1NO 1NC 230V AC Z-TN230 / 1S1O (267975)

Eaton Installation relay 20A 1NO 1NC 230V AC Z-TN230 / 1S1O (267975)

Morele.net
€21.59 +VAT
PLN 101.74
  • Manufacturer: Eaton
Supplier
Morele.net
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Finder Impulse relay 1Z 10A 250V 24V AC mounting in junction boxes and housings (26.01.8.024.0000)

Finder Impulse relay 1Z 10A 250V 24V AC mounting in junction boxes and housings (26.01.8.024.0000)

Morele.net
€7.76 +VAT
PLN 36.58
  • Manufacturer: Finder
Supplier
Morele.net
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Relpol Installation relay MT-PI-17S-11-5024 1P 16A 24V AC (858792)

Relpol Installation relay MT-PI-17S-11-5024 1P 16A 24V AC (858792)

Morele.net
€6.80 +VAT
PLN 32.02
  • Manufacturer: Relpol
Supplier
Morele.net
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F&F Installation Relay 4Z 8A 12V AC / DC (PK-4PZ 12)

F&F Installation Relay 4Z 8A 12V AC / DC (PK-4PZ 12)

Morele.net
€10.87 +VAT
PLN 51.21
  • Manufacturer: F&F
Supplier
Morele.net
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Hager Polo Installation relay 16A 4Z 230V AC (ERC416)

Hager Polo Installation relay 16A 4Z 230V AC (ERC416)

Morele.net
€19.32 +VAT
PLN 91.05
  • Manufacturer: Hager Polo
Supplier
Morele.net
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Siemens Installation relay 16A 2CO 230V / 400V AC 24V DC (5TT4217-2)

Siemens Installation relay 16A 2CO 230V / 400V AC 24V DC (5TT4217-2)

Morele.net
€51.89 +VAT
PLN 244.48
  • Manufacturer: Siemens
Supplier
Morele.net
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Installation relays

An installation relay is an electrical device that responds to a change in a certain physical quantity, such as electrical voltage or current. It performs a step change of state in one or more output circuits due to changing input conditions.

The task of the relay - controlling the electric circuit

The role of the relay is to control the operation of an electric circuit (or a group of circuits) in an efficient and safe way. Relays control lighting, ventilation systems, heating, heat pumps, but also quite small motors that drive shutters or blinds in the windows. Although the relays are implemented in various forms (e.g. for installation in boxes), today installation relays are the most popular - especially in applications in public utility facilities or residential buildings. It is worth knowing that regardless of the type of device, the appropriate selection of the relay is not only a key issue, but also requires some experience and knowledge in the field of electrical engineering.

Electromagnetic relay in installation housing

The installation relay is not some particular type of device, but simply an electromagnetic relay enclosed in a installation box . Thanks to this, it is possible to standardize the device dimensions and mount them on TH35 rail in modular switchboards.

The basic electromagnetic relay performs the on-off function, that is, it closes and opens the output electrical circuit with the use of a signal at the device input. The task is performed by two main elements of the device - the coil and contacts. After the control circuit is supplied with power to the coil, the contacts close or open - depending on whether they are make, break or changeover contacts.

Installation relays look very similar to miniature circuit breakers, i.e. esek. A diode is installed on their housing to indicate the status of the power supply. Most often, the correct power supply is indicated by a green LED emitting a continuous light.

Relays in building and industrial automation

Installation relays are commonly used in electrical installations of industrial automation. They are used in many production devices, electrical machines or control systems, e.g. conveyor belts. However, it is worth knowing that the relays are also responsible for controlling escalators in shopping centers, ventilation, elevators and street traffic lights. They are also very often used in building automation , where they cooperate with the control clocks of administrative circuits of multi-family buildings, switches in stairwells or other control buttons. They are also an important element of "smart home" systems.

How to choose the right relay?

An incorrectly selected relay will malfunction, which can easily lead to irreparable damage to electrical devices and electronic systems. Therefore, when replacing or installing the relay, the most important parameters of the device must be taken into account, such as:

  1. type of contacts (make, break or changeover),
  2. rated voltage - sometimes the manufacturer allows the device to be powered with both 24 V (alternating and direct) and 230 V alternating voltage,
  3. maximum contact voltage,
  4. maximum switching capacity, i.e. the maximum power that can be switched on with the relay,
  5. load current (maximum and rated),
  6. electric and mechanical durability determining the number of switchings for which the manufacturer guarantees the correct operation of the device,
  7. operating temperature (usually manufacturers guarantee stable operation of the device at temperatures from -20 to 50 degrees Celsius).

It is also important to choose from the offer of proven, well-known manufacturers who guarantee that the relays made by them are of the highest quality, just like other devices.