Solid State Relay, 3-phase, 150A/200A, DC to AC SSR

The operating environment temperature range of this three-phase solid-state relay is -20℃~75℃, and it is screw-fixed and can operate in a variety of industrial environment.

Features

• The three-phase solid-state relay has a wide input voltage range, low control current, is suitable for a variety of control systems, and has high energy efficiency.
• It adopts a design without mechanical moving parts, no wear, long service life and high reliability.
• The relay has fast switching speed, zero voltage start and zero current shutdown functions, which effectively reduces radio frequency interference.
• This solid-state relay has a built-in resistance and capacitance absorption circuit to protect the relay from the instantaneous current shock at startup and improve safety.
• The three-phase solid-state relay adopts input and output circuit photoelectric isolation technology, with an insulation withstand voltage of 2500V.
• It has a small and compact design, is internally potted with epoxy resin, has shockproof, moisture-proof and corrosion-resistant capabilities, and is suitable for various industrial environments.

Specification

Note: Please use with heat sink.

Heat Sink

Note: Due to different measurement methods, there may be slight errors in the size.

Dimension (mm)

Note: Due to different measurement methods, there may be slight errors in the size.

Wiring Diagram

There are two ways to connect three-phase AC, namely star connection and triangle connection:

Star connection is to connect the three ends of the three-phase load together as the common end, and the three first sections lead to three live wires.

(For example, A-phase load is represented by Ax, B-phase load is represented by By, and C-phase load is represented by Cz, that is, x, y and z are connected together, and three wires A, B and C are drawn out) The voltage borne by each phase coil of the load is the phase voltage of 220 volts, that is, the voltage between the live wire and the zero wire (neutral wire) is 220V.

Triangle connection is to connect the beginning and end of each phase of the three-phase load in sequence.

(For example, A-phase load is represented by Ax, B-phase load is represented by By, and C-phase load is represented by C, that is, x is connected to B, y is connected to C, and z is connected to A, and the three wires drawn out are Bx, Cy, and Az) The voltage borne by each phase load is the line voltage of 380 volts, that is, the voltage between the live wires.

Tips: The difference between solid-state relays and other relays

The biggest difference between solid-state relays (SSRs) and traditional relays (such as electromagnetic relays and mechanical relays) is that they have no mechanical contacts and rely on semiconductor devices for switch control. Therefore, they have the advantages of long life, fast switching speed, no noise, and strong vibration resistance. In addition, the working process of SSR does not generate arcs or mechanical wear, which can effectively reduce electromagnetic interference. It is suitable for scenes such as industrial automation, motor control, and heating systems that require high-frequency switching and long-term stable operation.