NO means Normally Open. This is another PCB Mount SSR I/O
Module or Solid State Relay. Can Go a bit better on the Amps
than the Slim PCB-SSR shown earlier, which is more of an I/O
Module for interface from digital circuits to contacters. This
circuit is the same, a bigger box, with a alumina filled epoxy
and a Small Aluminum plate on top, this way more Load is
Here is an Embedded System that could make use of such Relays
CAn Remote Automation-Control with AVR
This ability to carry more load, does not depend on circuit,
yes the tracks have to be reinforced by copper braid for
higher currents. Or thick copper strands. The main issue is to
get the heat off the BTA16-600 Triac.
16A 600V is good, provided load short circuit is avoided,
inductive loads are taken care of. and the heat from triac
which increases with more current. has to be pumped out from
the aluminum plate to surrounding air.
This is a SSR that was custom made as a Stackable Output
Module. It is maent for PC Mount low current applications and
generally drives an external Contacter to Power the Motors or
Now the Silpad or Mica can be Avoided for BTA16-600 Type of devices, (see datasheet) The Metal tab or sometimes a Non-metal tab of other devices offer kilo-volts of insulation. You can take extra precaution with mica-silpad or a thin layer of thermally conductive epoxy. But this will reduce its Amps or Load abilities.
In a SSR the circuit is not everything, the PCB, the
engineering, the production, testing will ensure you can give
rugged industrial grade products.
10th Jun 2020
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