The PS7141L-2A-E5-A is a solid state relay (SSR) manufactured by CEL (California Eastern Laboratories). It is designed for switching AC or DC loads using an optically isolated input.

Applications

• Industrial automation
• Motor control
• Lighting control
• Heating control
• Security systems

Features

• Optically isolated input
• Zero-cross switching
• High surge capability
• Low on-resistance
• Compact package

Benefits

• Provides electrical isolation between control and load circuits
• Reduces EMI (Electromagnetic Interference)
• Withstands high inrush currents
• Minimizes power dissipation
• Saves board space

Additional Details

The PS7141L-2A-E5-A SSR uses an LED to activate a photo-sensitive semiconductor switch. This provides complete electrical isolation between the control circuit and the load. The zero-cross switching feature ensures that the relay switches only when the AC voltage is near zero, reducing EMI and extending the life of the load. The SSR is designed to withstand high surge currents, making it suitable for driving inductive loads such as motors and transformers. The low on-resistance minimizes power dissipation, improving energy efficiency. The compact package allows for high-density mounting on printed circuit boards. The device is ideal for applications where safety and reliability are critical.

The optical isolation protects sensitive control circuitry from voltage spikes and noise on the load side. The zero-cross functionality is especially useful for resistive loads and helps in minimizing stress on the switching elements. The high surge current handling capability makes it a robust and dependable solution for a variety of industrial applications.