Temperature power controller SCR – DIN-A-MITE C

The DIN-A-MITE C silicone controlled rectifier (SCR) provides you with a versatile and compact power controller, capable of controlling power to heating elements at a low cost.  Utilising a DIN-A-MITE C SCR controller provides increased heater life as the temperature swings are reduced, while still providing a smooth output. The DIN-A-MITE C has current switching capabilities ranging from 30-80A depending on the mode of operation. Where the standard DIN-A-MITE-C provides current switching ranging from 30-70A and the Fan-Cooled DIN-A-MITE-C provides a range of 70-80A. Basic modes of operation include single-phase, three-phase\two leg and three-phase\three leg at 600VAC.

The DIN-A-MITE C is completely touch safe with both DIN-rail and standard panel mounting/thru wall mounting available. The DIN-A-MITE C offers a range of different SCR firing methods which can be implemented, including; Zero-Cross switching, Burst firing, Fixed time-based firing and Variable time-based firing.

- Zero-Cross Switching: Zero cross switching is the process of switching the SCR on/off at the lowest possible voltage (zero volts). By doing so, we greatly reduce any electrical noise.

- Burst Firing: Burst firing is defined as how many AC cycles are ‘on’ per second. This phenomenon uses short “bursts” of current to the load to ensure that just the right amount of power is provided. How many and how often these cycles occur is determined by the time base of the cycle. Of which, we have two possibilities, fixed or variable time based.

1)  Fixed Time Based: As suggested by its name, a fixed time-based SCR has a permanently fixed “cycle time”. This means that for a set amount of time (cycles) the SCR will be switched on and after the percentage of power has been achieved, it will switch off.

2) Variable Time Based: Unlike a fixed time-base, a variable time base SCR changes the time base according to the power requirement (using the smallest number of AC cycles achievable).

Variable Time Base switches the heater ON/OFF more often, hence there are less temperature variations. Resulting in longer heater life