Solid State Relay — BCH India Manufacturer and supplier of Solid State Relay

 BCH Electric Limited is one of the leading Manufacturer and supplier of Solid State Relay in India. Our Solid State Relay  is widely used in heating control, Motor control, capacitor switching and lighting control, solenoid, transformer control, and air conditioning applications.

BCH Solid State Relay ranges from 12A to 125A. In which single-phase and three-phase Solid State Relay are available with low-level output control without interfacing. Its narrow Solid State Relay range has current monitoring & temperature controller PID with high switching frequency and longer life. Solid relay has a compact size that has input voltage 3 to 32VDC while other voltages are on request.

What Is a Solid State Relay?

A Solid State Relay (SSR) is a relay that does not have a moving contact. Solid state relays are not very different from mechanical relays with moving contacts in operation. Solid state relay employs semiconductor switching elements, such as thyristors, triacs, diodes, and transistors.

Solid-state relays are the modified form of relays. A solid-state relay is composed of a solid-state material with better features than the typical relays. Relays are used for automatic switching of power. The relays are used to eliminate the typical switching techniques that are manual and difficult to handle. A solid-state relay is a type of switch which is a non-contact switch. The manufacturing material for the solid-state relays is a solid-state element. The benefit of using the solid-state element is that the solid-state element can control high load current with a smaller control signal. There is no possibility of sparking in the solid-state relay due to the characteristics of the solid-state element used in the relay. The switching OFF and ON state in the solid-state relay can be achieved easily.

Solid-state relays have different features, which are:

• There are no mechanical elements in the solid-state relays
• Voltage rise in very low
• Zero-crossing technology is used in solid-state relays

Solid-state relays have other advantages like:

• Corrosion resistance
• Vibration resistance
• High reliability and
• Long life.

Solid State Relay Working

The working of the solid state relay can be understood by categorizing the solid-state relays into two categories. One is the AC solid state relay, and the other is the DC solid state relay. It consists of one input and output terminal. The relay's inputs and output are attached to the specified terminals. When a specific control signal is provided to the input terminals of the solid-state relay, the ON and OFF function on the output terminal is performed accordingly. After attaining that function, the switching function of the relay is turned ON. Then, with the help of the coupling circuit in the solid-state relay, a channel is formed between the input and output of the relay.

This coupling circuit also performs the cutoff function in case of unwanted or uncertain situations, set initially before installing the relay. Optical couplers are used in the coupling circuit of the solid-state relay. The optical couplers have good sensitivity, higher response speed, higher input and output insulation levels. The load used in the solid-state relay is a LED used to match the level of the input signal. The output is either "0" or "1" in the solid-state relay. The output of the solid-state relay is connected with a computer for interfacing.

In the case of the DC solid state relays, there is no snubber circuit and zero-crossing control circuit. Instead, a transistor with a larger value is used to switch the solid-state relay. Another working principle for this relay is the same as the above working principle.

Applications of Solid State Relays

The most common application of the solid state relay is the load switching of AC load. Some household circuits have solid state relays for AC load switching. Solid state relays have different applications with power control. Moreover, different solid state relays are used for heater controls.

Examples 

• Furnaces (e.g., Baking furnaces)
• Robots
• Machine tools
• Molding machines

Specification and Features Solid State Relay

1. Range 12A to 125A
2. Single-phase and three-phase Solid State Relay
3. Slim Solid State Relay range (22.5mm) with current monitoring & temperature controller PID
4. Input Voltage 3 to 32VDC,Other voltages on request
5. High switching frequency and longer life
6. Reliable and quite an operation
7. Compact size
8. Low-level output control is possible without interfacing
9. Marked

To know more about range download  our catalogue  now to get the brief description on our product.