CPC1130NTR Relays

Solid state relays (SSRs) have been increasingly replacing electromechanical relays in industrial and laboratory applications due to their low cost and long life. The CPC1130NTR is a type of SSR which offers extendable functionality, flexible input voltage ranges and fast transient response. This paper will discuss its application field and working principle.

Application Field

The CPC1130NTR is designed as a direct replacement for electromechanical relays in applications requiring the on-off control of a single-phase AC load. It is ideal for industrial, commercial and residential applications such as air conditioning, refrigeration, lighting control and medical equipment. Additionally, the unit is suitable for use in light-duty switching operations in motor controllers, household appliance controllers, vending machines, amusement machines and other consumer electronics components.

The CPC1130NTR is equipped with a Voltage Transfer Relay (VTR), which is capable of shifting the input voltage range from 0-230 volts AC to 0-30 volts DC. This allows it to be used in loads that require either AC or DC, making it a universal SSR. In addition, the unit is designed to automatically detect and adjust the power supply voltage, allowing it to be used in environments with fluctuating power supplies.

Working Principle

The CPC1130NTR uses a solid-state switching element, which is typically a silicon controlled rectifier (SCR). The SCR is connected in series with the load, and when energised, a current flows through it. This current is then used to switch the load on by closing the contacts. As the current flows through the SCR, it creates a strong magnetic field, which attracts and closes the armature of the relay, thus completing the circuit and turning on the load.

The CPC1130NTR also features a soft-start function which prevents inrush current when switching the load on. This function is especially important when switching high-voltage AC loads, as it prevents the load from being over-stressed. In addition, the unit also features a "cold-start" mode which allows the load to be energised in the event of a power failure.

In terms of safety, the CPC1130NTR meets the latest safety certification standards. It is equipped with an under-voltage trip and thermal shut-down functions, and is also RoHS compliant, making it safe to use in a range of applications.

Conclusion

The CPC1130NTR is a versatile solid state relay that provides on/off control of AC and DC loads. It features a wide input voltage range, fast transient response, soft start and cold start functions, as well as the latest safety certification. As such, the CPC1130NTR is well suited for use in a variety of industrial and commercial applications.