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Safety relay
EN 50205

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Relay with forcibly guided contacts
5 mA - 6 A / 2 - 3 contacts

SIS 2 / SIS 3 / SIS 3 SEN

The new safety relay SIS212 measures a mere 29.2 x 16.6 x 16.2 mm (lxwxh) and thus satisfies the ever rising demand for ever smaller components. The DIN standard EN 50205, application type A, is fully complied with. Approvals by SEV, UL, cUL and TUV.

This relay is equipped with 3 forcibly guided contacts (2 normally-open contacts / 1 normally-closed contact). The contact nearest to the coil is the normally-closed contact. It is mostly used for [...]

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Relay with forcibly guided contacts
5 mA - 6 A / 4 - 6 contacts

SIS 4 / SIS 6

After presenting the world's smallest safety relays SIS with 6 contacts two years ago, ELESTA relays now starts with a 4-contact version in executions SIS 422 (2 N.O./2 N.C.) and SIS 312 (3 N.O./1 N.C.). Both types feature forcibly guided contacts and comply with standard EN50205. The outer dimensions are identical with those of the 6-contact version (I x w x h: 48 x 16.6 x 16.2mm) and allow high packing densities in housings for safety devices.
With a nominal [...]

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Flat relay with forcibly guided contacts
5 mA - 8 A / 4 contacts

SIF 4

The new SIF relays with an element height of just 10.9 mm are worldwide the flattest 4 to 6-pole relays with forcibly guided contacts and can switch at 8A.

The monostable, neutral magnet system requires a mere 660mW (6 poles) or 700mW (4 poles) coil drive capacity and can be lowered to approx. 200 mW after switching on. If the fixation pins on the relay's underside are taken advantage of as stand-off, the relay height is approx. 12.1 mm and SMD of up to 1mm element [...]

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Flat relay with forcibly guided contacts
5 mA - 8 A / 6 contacts

SIF 6

Relays for areas with a high explosion hazard must satisfy special safety requirements. Voltage flashovers and short-circuits can have devastating consequences. This is why Elesta relays pays highest attention to its products featuring generously dimensioned clearances and creepage distances. With the SIM range of relays, for example, these amount to >14 mm between control and load side, and the test voltage applied during one minute is 5,000V eff. As a result these relays can [...]

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Relay with forcibly guided contacts
10 mA - 8 A / 2 contacts

SGR 282 / SIR 282

The SGR282Z is one of most spread safety relays with 2 forcibly guided change-over contacts.
The SGR282Z is produced with standard and sensitive coils with up to 110VDC. The coil power consumption of the sensitive version is as low as 0.7mW, which is an increase of around 30% compared with the standard coil.

The creeping and leakage distances between both contacts are >5.5mm at a tested insulation voltage of 4’000 Veff. Switching capacity is 1’500 VA [...]

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Relay with forcibly guided contacts
10 mA - 8 A / 2 - 3 - 4 contacts

SIM 2 / SIM 3 / SIM 4

With the SIM range of relays clearances and creepage distances amount to >14 mm between control and load side, and the test voltage applied during one minute is 5,OOOV eff. As a result these relays can be used without problems also in operating equipment requiring explosion protection. Within the contact assembly, clearances and creepage distances of >5.5 mm exist and a test voltage of up to 4,OOOV eff is applied, depending on the relay type and contact [...]

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Relay with forcibly guided contacts
10 mA - 10 A / 4 contacts

The main problem with which developers of relays are confronted is to find the best compromise between entirely different and often opposing requirements. On the one hand the relays should be of the smallest possible volume, on the other they should be flexible for the activation. Apart from these aspects they should become more sensitive, offer a higher performance and reliability, but all this not at the expense of the contact data and insulation properties, of course.

ELESTA [...]

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Power relay with forcibly guided contacts
10 mA - 12 A / 4 contacts

SIR 4 Power

Relays for areas with a high explosion hazard must satisfy special safety requirements. Voltage flashovers and short-circuits can have devastating consequences. This is why Elesta relays pays highest attention to its products featuring generously dimensioned clearances and creepage distances. With the SIM range of relays, for example, these amount to >14 mm between control and load side, and the test voltage applied during one minute is 5,000V eff. As a result these relays [...]

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Relay with forcibly guided contacts
10 mA - 10 A / 6 contacts

SIR 6 / SIR SEN

What the development engineer appreciates particularly are the comprehensive possibilities for the implementation of intelligent and cost-effective devices and systems. With the SIR relays it is possible to build up circuits satisfying the highest safety levels of category 4 according to standard EN 954-1. This standard permits safety-oriented appliances equipped with SIR relays to be used at the highest safety level for the protection of humans and equipment.

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Relay with forcibly guided contacts
10 mA - 10 A / 8 - 10 contacts

SIR 8 / SIR 10

ELESTA relays stays with its policy to offer products with added safety within the contact block. With this added safety voltages of up to 250 V between two adjacent contact pairs can be insulated („safe separation“). As a matter of course the creeping distance are designed for pollution degree 3 according to the Norm EN50205 for relays with forcibly guided contacts.
Although the relay is designed for highest degree of insulation between the single contact pairs [...]

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Power relay with forcibly guided contacts
10 mA - 16 A / 6 contacts

SIP 6

Applications with a high number of operations and major switching loads are extremely demanding as far as the contact life is concerned. So far, one resorted in such cases to small or auxiliary contactors wired between the actual load. This is not necessary any more: a new development of ELESTA relays GmbH enables the direct activation of e.g. electric motors at a switching load of 380...440V up to 4.4 kW (6 HP).

The "power package" introduced under the type [...]

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Relay socket

For certain applications of safety relays the market specifies mounting bases ever more clearly. Although most of the users in question are aware of the advantages and drawbacks of a plug-in socket, the relay's suitability for a rapid exchange during service or in case of disturbances is emphasized. This is why Elesta relays GmbH has now included plug-in sockets in its range of products.

The programme of sockets consists of six versions:

- For the SGR282Z and the SIR282 [...]

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