Relays - Overview

Switching Large  & Small Capacities   :-  Basically, the reliability of the contacts in the relay reaches to a maximum at a medium current load thanks to the continuous self cleaning effect. As the contact load increases & hence leads to more severe erosion of the contacts, the switching reliability decreases with an increasing number of switching operations.

Contacts of Silver-Nickel which is standard for the majority of Relays are generally suitable for currents of approximate 10ma & higher. Such large surface contacts can switch both low & high currents.

For applications that call for improved contact reliability or low currents / voltages, conventional relays with hard plated gold contacts are preferable because they do not erode & therefore operate more reliably.

If maximum switching reliability is necessary, especially for low currents/ voltages, a relay should not be your first choice. In these instances its  advisable  the use of Optos. Wear & abrasion caused by mechanical movements are non – existent in optos.

Electromagnetic Relay Selection Chart

2 Change Over Industrial Relay
12 A/ 250 V Ac, Default Mechanical Latch And Test Button Feature, For Plug-In Sockets

3 Change Over Industrial Relay
10 A/ 250 V Ac, Default Mechanical Latch And Test Button Feature, For Plug-In Sockets

4 Change Over Industrial Relay
6 A/250 V Ac, Default Mechanical Latch And Test Button Feature, For Plug-In Sockets

Single Change Over Miniature Relay
16 A/250 V Ac, Height 15.7 Mm, Recyclable Packing For Pcb And Plug In Sockets

2 Change Over Miniature Relay
8 A/250 V Ac, Height 15.7 Mm, Recyclable Packing For Pcb And Plug In Sockets

Single Change Over Miniature Relay
16 A/250 V Ac, Height 15.7 Mm, Recyclable Packing For Pcb And Plug In Sockets

2 Change Over Interface Relay
8 A/250 V Ac, Complete Assembly Includes: Relay + Socket + Clip + Reverse Polarisation Protection And Coil Activitation Indication Module

Sugar Cube Miniature Relay
Small Dimensions, Switching Current Up To 10 A/ 15 A, Sealed For Soldering, Designed To Be Used In High Temperature And In Chemical Environment. Application: For House Hold Equipmnets, Office Machines, Audio Equipments, Coffee Machines, Control Devices Etc.