Compact three phase solid state relay

Features

① Optical isolation between control circuit and load circuit, compact three-phase solid state relay, with rail mounting, built-in heat sink.

② Thyristor output, zero current turn-off, voltage zero-crossing turn-on.

③ Compact size, economical, single in-line PCB soldering installation, standardized dimensions.

④ Control signal compatible with TTL logic.

⑤ Flame-retardant engineering plastic housing.

⑥ Wide range of applications: such as industrial electric furnaces, ovens, water pumps, motors, electrical switch cabinets, automation control equipment, commonly used in refrigerators, air conditioners, currency binding machines, mahjong machines, and other household appliances.

Compact Three-Phase Solid State Relay

The compact three-phase solid state relay, with rail mounting and built-in heat sink, is a contactless on-off electronic switch. It has two terminals for input control and two terminals for output control, with optical isolation in between, using optocoupling for input and output. When a DC or pulse signal is applied to the input terminal, the output terminal can switch from off to on (in the absence of a signal, it remains off), thus controlling a larger load. The entire device has no moving parts or contacts, achieving functions equivalent to common mechanical electromagnetic relays.

Since the solid state relay is a contactless switch element composed of solid components, it has advantages over electromagnetic relays such as reliable operation, fast switching speed, no noise, long life, compact size, no sparks, corrosion resistance, explosion-proof, and vibration resistance. It has minimal external interference, is compatible with logic circuits, has strong anti-interference capability, fast switching speed, and is easy to use, making it applicable in a wide range of fields.

It is gradually replacing traditional electromagnetic relays and can further expand into areas where traditional electromagnetic relays cannot be used, such as computers. It is now widely used in computer peripheral interface devices, electric furnace heating and temperature control equipment; CNC machinery, remote control systems, industrial automation devices; signal lights, traffic lights, stage lighting control equipment; instruments, medical equipment, copiers, color expansion machines, rubber and plastic machinery, automatic washing machines, refrigerators, air conditioners, currency binding machines, mahjong machines; and in chemical, coal mining, and other environments requiring explosion-proof, moisture-proof, and corrosion-resistant conditions. It has become an ideal replacement product in the relay family (EMR).