Phidgets Inc. - 3952_0 - DC Solid State Relay

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3952_0 - DC Solid State Relay - 30V 100A

Quantity	Price
1	$40.00
5	$38.40
10	$37.20
25	$36.00
100	$34.80

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Product Features

Connects to a Digital Output
Switches high power DC loads
0 VDC - 30 VDC Load
100A Current Rating
Connects to any device with a Digital Output.

Approximate arrival date of new stock: May 30, 2013

Product Description

The 3952 DC Solid State Relay can be used to switch loads of up to 100A at 30VDC using the digital output from a Phidget I/O board. The Relay comes with an optional protective cover to protect people from touching the exposed high power wires, and a diode to protect your SSR from harmful transients. All wires connect to this relay by screw terminals. If you are switching a high power load or find the relay is getting hot, please consider a heat sink. Heat sinks 3955 and 3956 are designed for use with this relay.

Product Specifications

Electrical Properties

Relay Output Type	MOSFET
Isolation Method	Photoelectric
Dielectric Strength	2.5 kV AC
Control Voltage Min	3 V DC
Control Voltage Max	32 V DC
Load Voltage Max (DC)	30 V DC
Load Current Min	20 mA
Load Current Max (DC)	25 A
Load Current Max (With 3955 Heatsink)	50 A
Load Current Max (With 3956 Heatsink)	100 A
Load Surge Current	240 A
Turn-on Time Max	1 ms
Turn-off Time Max	0.5 ms

Physical Properties

Length	58 mm
Width	45 mm
Height	25 mm
Operating Temperature Min	-30 °C
Operating Temperature Max	80 °C

Other Properties

Manufacturer Part Number

HFS33/D-30D100M

Have a look at the Data Sheet for a complete set of specifications.

Warnings

When choosing a SSR, check the actual load current and the working ambient temperature. Refer to the characteristic curve in the Data Sheet and select the proper heat sink if required.
Use the heat transfer pad between the SSR and the heat sink. Failure to do so can cause overheating and could damage the relay.
Make sure that the SSR terminal screws are tight. If the screws are not tight, the SSR will get damaged by heat generated when the power is ON. Check the Data Sheet for recommended tightened torque.
When an SSR fails, it most often fails permanently closed - leaving your load powered, and possibly creating a fire or safety hazard.
You can use a fuse to protect your circuit from wiring mistakes and accidental short-circuits.
Make sure that you use the relay within the product specifications.

Comes Packaged with

A Protective Relay Cover
A Heat Transfer Pad
A Diode

Heat Sinks

Have a look at the relay's characteristic curve in the Data Sheet to decide if you need a heat sink. Without a heat sink, the maximum current that can be handled by this relay is 25A up to an ambient temperature of 40°C.

In order to be able to switch currents of up to 100A, you have to use the 3956 - Heat Sink.

Resources

Connection

This relay connects to any device with a Digital Output.

It should be connected as shown below.