Three Phase Solid State Relay

Three Phase Solid State Relay 25-60A, 4-32vdc or 80-250vac input and 24-480VAC output.

• 
  Current:0.5A~400A
• Operation Voltage: 24V~480V
• Control Voltage: 4-32vdc or 80 to 250vac
• LED indicator showing “ON” or “OFF”
• Protect Panel
• IEC standard
• Input & output types DC/AC AC/AC DC/DC
  

Overview

The Solid State Relay is industrial control appliance that uses semiconductor devices for the main control, compare with traditional industrial magnetic contactors, they are more high-powered, intelligent, digital, systematic and green friendly.

The main advantage of solid-state relays is they have no moving parts to wear out, and no contact bounce issues. They can switch both “ON” and “OFF” much faster than a conventional mechanical relay, as well as zero-voltage turn-on and zero-current turn-off eliminating electrical noise.

Input Signal

One of the main components of a solid-state relay (SSR) is the optoisolator (also called an optocoupler) which contains one (or more) infra-red light-emitting diode or LED light source, and a photosensitive device within a single case. The optoisolator isolates the input from the output.

Output Signal

The output switching capabilities of a solid-state relay can be either AC or DC similar to its input voltage requirements. The output circuit of most standard solid-state relays are configured to perform only one type of switching action giving the equivalent of a normally-open, single-pole, single-throw (SPST-NO) operation of an electromechanical relay.

Heat Dissipative Power Curve

The unit will generate heat during operation so a heatsink base or a finned heatsink should be used. See curves below for details.To find out more about solid-state relays click here.