We are Dealer, Distributor, Supplier of Solid State Relays, SSR, DC Solid State Relays and our set up
is situated in Pune, Maharashtra, India. A solid state relay (SSR) is an electronic switching device
that switches on or off when an external voltage (AC or DC) is applied across its control terminals. It
serves the same function as an electromechanical relay, but has no moving parts and therefore results in
a longer operational lifetime. SSRs consist of a sensor which responds to an appropriate input (control
signal), a solid-state electronic switching device which switches power to the load circuitry, and a
coupling mechanism to enable the control signal to activate this switch without mechanical parts. The
relay may be designed to switch either AC or DC loads.
Packaged solid-state relays use power semiconductor devices such as thyristors and transistors, to
switch currents up to around a hundred amperes. Solid-state relays have fast switching speeds compared
with electromechanical relays, and have no physical contacts to wear out. Users of solid-state relays
must take into consideration an SSR's inability to withstand a large momentary overload the way an
electromechanical relay can, as well as their higher "on" resistance.
