MC-SSR - Solid state relay

Drivers


General features

MC-SSR - MC-SSR

MC-SSR/x is a solid state relay suitable for piloting direct current loads even at high speeds.

It is particularly suitable for replacing the electro-mechanical relays in applications that require speed, repeatability and durability.
It has a built-in device to suppress disturbance generated when switching off inductive loads.

It is available in two versions:

  • MC-SSR/P for piloting loads operating in PNP logic
  • MC-SSR/N for piloting loads operating in NPN logic

Its compactness means that it can be used in systems where the space occupied is of crucial importance.

Technical details

DIMENSIONS (lenght x width x height) 93 x 30 x 56 mm
FIXTURE DIN guide
CONNECTIONS Extractable screw-n terminals for cable Ø max 1.5mm
POWER SUPPLY 12-30Vcc
INPUT VOLTAGE 6-30Vcc
INPUT RESISTANCE 1,5Kohm
MAX OUTPUT CURRENT 1,5A
MAX OPERATING TEMPERATURE * 40°C
OUTPUT SIGNAL ACTIVATION DELAY < 5µs
OUTPUT SIGNAL DE-ACTIVATION DELAY < 100µs
MINIMUM INSULATION VOLTAGE 500V

* Maximum ambient temperature withstood by the device used in maximum load conditions.

F.A.Q.

Can I use the SSR in any application?

Generally it is possible to replace any electromechanical relay with an equivalent SSR considering some aspects:

  1. The SSR are equipped with only the normally open contact (NO), then it can not be used as a normally closed contact (NC) or exchange
  2. The SSR have a field of use of the well-defined output contact: exist relay for direct current, relay for alternating current and also the output contacts have the voltage limits and usage current generally more restrictive than those of a common electromechanical relay
  3. SSR, especially those suitable for alternating currents, have a weak current that circulates within them (loss) of current even in conditions of relay not activated. These currents can be comprised between a few uA and some mA, value higher than that of electromechanical contacts, which in fact are devoid of current loss.
Normally I use electromechanical relays. Why should I use solid state relay (SSR)?

The SSR, over electromechanical relays, offer some advantages:

  • The total absence of electrical contacts or moving parts lengthens its life to a virtually infinite amount of time and also makes it more resistant to mechanical vibrations or to shock
  • The use of electronic components for the activation of the output lead to a greater input control sensitivity, which translates into the possibility to drive the SSR with a field of voltages far higher than that of electromechanical relays
  • The SSR are much faster than the corresponding electromechanical models, since the replacement of moving parts
    high-speed electronic components greatly reduces the time taken for the activation and deactivation of the output
  • The products from SSR Emmeci Electronics are also already equipped internally with devices for the reduction of the generated voltage surges
    piloted by inductive loads (high diodes velcotà), eliminating the need of having to be installed externally to the relay.

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