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3053_0 Phidgets Dual SSR Relay Board , 3053


Switch 2 SSRs rated for 28VAC/9amp or 40VDC/9amp using digital outputs.


Solid State Relays, or SSRs, are devices designed to operate like standard relays but without mechanical motion.

The SSR Board is safe to use with sensitive control devices like microprocessors, and will not damage a Phidget device or your PC. Optoisolation between the control inputs and outputs of the SSR in the form of a GaAs LED paired with a set of optically-controlled MOSFETs provides protection from output to input.

An on-board 47V bidirectional transorb across the relay output protects the board from static electricity and surges from inductive loads.


This SSR board can be controlled with Phidget digital outputs.

Electrical Properties

Relay Output Type


Isolation Method


Dielectric Strength

5.3 kV AC

Control Voltage Min

3 V DC

Control Voltage Max

30 V DC

Control Current

10 mA

Load Voltage Max (DC)

40 V DC

Load Voltage Max (AC)

28 V AC

Load Current Max (AC)

(per channel) 9 A

Load Current Max (DC)

(per channel) 9 A

Turn-on Time Max

1.9 ms

Turn-off Time Max

0.16 ms

Contact Resistance Max

50 mΩ

Switching Speed Max

300 cps

Physical Properties

Recommended Wire Size (Control)

16 - 26 AWG

Recommended Wire Size (Load)

12 - 24 AWG

Operating Temperature Min

-40 °C

Operating Temperature Max

100 °C