Industrial OEM POWER Solid State Relay (SSR) Boards.

The EID's SOSER-model A, B and C Solid State Relay (SSR) boards are designed to perform high voltage/current switching function utilizing low level isolated signals.

Same standard features and benefits of our Solid State Relay:

• Random and zero-cross standard

• Low zero-cross turn-on voltage standard 

• Input protection and control LED standard

• Connectors for power wiring standard

• Snubber circuit standard

• polarity changes protection circuit standard

• heat sinks standard

All Power Solid State Relay models include:

• Opto-Isolated Input to protect, completely isolated (up to 7500V) your low level signal such as logic (3V, 5V 10V, 24V DC/AC) from the high voltage side (24V-150VAC). Input signal from +3.0V to 24VAC or VDC. Interface directly with our USB line of Interface board (EUSB), etc.

• EID's Snubber circuitry especially designed for use on inductive loads, because of their high commutation performances. Additionally, it is designed for on/off or phase angle function in applications such as static relays, light dimmers and appliance motor speed controllers. The circuit when a load driver switches from on-state to off-state, the current passes through zero and the supply voltage is reapplied instantaneously across. In certain conditions, the it is not able to block this voltage and then turns on spontaneously. Our unique snubber filter take car of it. It important to mention that an snubber circuit must be used when there is a risk of load driver spurious triggering, i.e. when the dI/dtOff - dV/dtOff couple, measured in the application, is higher than the load driver values, (dI/dt)C at a given (dV/dt)C.

• Zero-Cross Opto-isolators the board consists of a infrared emitting diode optically coupled to a monolithic silicon detector performing the function of a zero voltage crossing bilateral output driver.

If used properly, it will eliminate the need for expensive boards and instruments, which would otherwise be needed to carry out the same switching tasks, or a pricey PLC.

The board is easy to install, setup and operate. If you want to do professional power switching, the board offers features you need.

Mounted easily via 0.125" (1/8") mounting holes using 4-40 screws (optional) and wire via convenient conventional industrial standards cage up terminal blocks (TB) or at you choice screw terminal (ST).

Setting the board is simple, just follow these easy steps:

1. Mount and connect the power lines (L1 and L2) between your load and the board.

2. connect and power the board of 2.5 to 36V DC/AC signals.

Please drop us a line at HVAC@eidusa.com and let us know where you use this unique Solid state relay board. Or, of course, if you have any adjustments deemed important--one of our OEM engineers will be happy to help you achieve them.

SOSER Model A (Resistive load with LED indicator):

Incandescent lamps, Resistive heating element...

SOSER Model A is SSR (Solid State Relay) specifically design for Resistive Loads

Resistive loads such as incandescent lamps and resistive heating elements are the two main classes of resistive loads for which 115 VAC is utilized. The main restriction is that the Board variation must be properly chosen to sustain the proper inrush loads. Incandescent lamps can sometimes draw a peak current known as “flashover” which can be extremely high, and the board should be protected by a fuse or rated high enough to sustain this current.

Shown above configured low (left) and high (right) current resistive load

SOSER Model B (Inductive load):

Motors, Solenoids, Magnets...

MODEL B is SSR (Solid State Relay) specifically design for Inductive Loads-Commutating dv/dt

Inductive loads (solenoids, motors, magnets, etc.) present a problem because the voltage and current are not in phase with each other. Since the board turns off at zero current, it may be trying to turn off when the applied current is zero but the applied voltage is high. This appears to the board driver like a sudden rise in applied

Voltage, which turns it on if the rate of rise exceeds the commutating dv/dt of the board current driver or the static dv/dt of the board input opto-isolation protection circuit. The simple solution to this problem is provided by the use of “snubber” networks to reduce the rate of voltage rise seen by the board circuit. In order to design a snubber properly, one should really know the power factor of the reactive load, which is defined as the cosine of the phase shift caused by the load. Unfortunately, this is not always known, and this makes snubbing network design somewhat empirical. However, a method of designing a snubber network may be defined, based upon a typical power factor. This can be used as a “first cut” and later modified based upon experiment. After many years EID’s engineer fine the magic numbers that seams to work on 97.8%.

SOSER Model C (Inductive load with input signal voltage fractionation and polarity changes protection circuit):

Motors, Solenoids, Magnets...

SOSER Model C like Model B is SSR (Solid State Relay) specifically design for Inductive Loads with with Input Protection Circuits

In some applications the input voltage varies widely. The SOSER Model C circuit allows a non-critical range of input voltages to properly drive the board and at the same time protects the input from inadvertent of reverse polarity.

SOSER Model A (Resistive load with LED indicator):

Incandescent lamps, Resistive heating element...

Figure A

1. Low voltage switching signal  input via terminal block.

2. High voltage output via terminal block, or wires nuts or high current screws terminal.

3. Heat sink current depended.

4. LED, Input signal power on indication.

SOSER Model B (Inductive load):

Motors, Solenoids, Magnets...

Figure B

1. Low voltage switching signal  input via terminal block.

2. High voltage output via terminal block, or wires nuts or high current screws terminal.

3. Heat sink current depended.

SOSER Model C (Inductive load with input signal voltage fractionation and polarity changes protection circuit):

Motors, Solenoids, Magnets...

Figure C

1. Low voltage switching signal  input via terminal block.

2. High voltage output via terminal block, or wires nuts or high current screws terminal.

3. Heat sink current depended.

4. On board low current input signal Protection Circuits

Features

• polarity changes protection circuit.

• Zero-Crossing.

• Snubber circuit.

• LED signal "ON" Indication.

• Also, designed to operate from input signals of 2.5 to 36V DC/AC (Model/P# depended)

Pricing 

* Prices, SKU#, P# and colors are subject to change without notice. 

SSR Model A with both input and output via terminal block and LED signal indicator and small heat sink. Rated 3A @ 120VAC RMS

EID-SOSER-ATBTB-3A120-SHL

$27.33

SSR Model A  with input via terminal block and output via screws terminal and LED signal indicator and small heat sink. Rated 3A @ 120VAC RMS

EID-SOSER-ATBST-3A120-SHL

$30.39

SSR Model A  with input via terminal block and output via 14 Gage wires 6"and LED signal indicator and small heat sink. Rated 3A @ 120VAC RMS.

EID-SOSER-ATBWR-3A120-SHL

$35.010

SSR Model A with both input and output via terminal block and small heat sink. Rated 3A @ 120VAC RMS

EID-SOSER-ATBTB-3A120-SH

$27.00

SSR Model A with input via terminal block and output via screws terminal and small heat sink. Rated 3A @ 120VAC RMS

EID-SOSER-ATBST-3A120-SH

$30.00

SSR Model A with input via terminal block and output via 14 Gage wires 6"and small heat sink. Rated 3A @ 120VAC RMS.

EID-SOSER-ATBWR-3A120-SH

$33.33

SSR Model A with both input and output via terminal block and LED signal indicator and large heat sink. Rated 6A @ 120VAC RMS

EID-SOSER-ATBTB-3A120-LHL

$30.33

SSR Model with input via terminal block and output via screws terminal and LED signal indicator and large heat sink. Rated 6A @ 120VAC RMS

EID-SOSER-ATBST-6A120-LHL

$33.39

SSR Model A with both input and output via 14 Gage wires 6"and LED signal indicator and large heat sink. Rated 6A @ 120VAC RMS

EID-SOSER-ATBWR-6A120-LHL

$38.10

SSR Model A with both input and output via terminal block

and large heat sink. Rated 6A @ 120VAC RMS

EID-SOSER-ATBTB-6A120-LH

$30.00

SSR Model A with both input and output via screws terminal and large heat sink. Rated 6A @ 120VAC RMS

EID-SOSER-ATBST-6A120-LH

$33.00

SSR Model A with both input and output via 14 Gage wires 6"and large heat sink. Rated 6A @ 120VAC RMS

EID-SOSER-ATBWR-6A120-LH

$36.33

SSR Model B with both input and output via terminal block and small heat sink. Rated 3A @ 120VAC RMS

EID-SOSER-BTBTB-3A120-SH

$30.00

SSR Model B with input via terminal block and output via screws terminal and small heat sink. Rated 3A @ 120VAC RMS

EID-SOSER-BTBST-3A120-SH

$33.00

SSR Model B with input via terminal block and output via 14 Gage wires 6"and small heat sink. Rated 3A @ 120VAC RMS.

EID-SOSER-BTBWR-3A120-SH

$36.33

SSR Model B with both input and output via terminal block

and large heat sink. Rated 6A @ 120VAC RMS

EID-SOSER-BTBTB-6A120-LH

$33.00

SSR Model B with both input and output via screws terminal and large heat sink. Rated 6A @ 120VAC RMS

EID-SOSER-BTBST-6A120-LH

$36.00

SSR Model B with both input and output via 14 Gage wires 6"and large heat sink. Rated 6A @ 120VAC RMS

EID-SOSER-BTBWR-6A120-LH

$39.33

SSR Model B with both input and output via terminal block and small heat sink and extra input protection circuits. Rated 3A @ 120VAC RMS

EID-SOSER-CTBTB-3A120-SH

$33.00

SSR Model B with input via terminal block and output via screws terminal and small heat sink and extra input protection circuits. Rated 3A @ 120VAC RMS

EID-SOSER-CTBST-3A120-SH

$36.00

SSR Model B with input via terminal block and output via 14 Gage wires 6"and small heat sink and input extra driver/amp. Rated 3A @ 120VAC RMS.

EID-SOSER-CTBWR-3A120-SH

$39.33

SSR Model B with both input and output via terminal block

and large heat sink and extra input protection circuits. Rated 6A @ 120VAC RMS

EID-SOSER-CTBTB-6A120-LH

$36.00

SSR Model B with both input and output via screws terminal and large heat sink and extra input protection circuits. Rated 6A @ 120VAC RMS

EID-SOSER-CTBST-6A120-LH

$39.00

SSR Model B with both input and output via 14 Gage wires 6"and large heat sink and extra input protection circuits. Rated 6A @ 120VAC RMS

EID-SOSER-CTBWR-6A120-LH

$42.33

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