Power Guard Guide
Learn about Power Guard Phidgets and when to use one.
Products for USB Sensing and Control
The Power Guard Phidget 30V 50A is used to protect your system from power surges caused by motors. When this device detects a power surge, it steps in to regulate the excess energy and protect your system.
View our Power Guard Guide to determine if your application requires a power guard.
This Phidget protects a power supply between 0 and 30V DC. Check the product page or data sheet of the device being powered to determine how much current is needed and what voltage range is permissable. Select the power supply from the list below that matches your region's wall socket type.
| Product | Electrical Properties | Physical Properties | ||
|---|---|---|---|---|
| Part Number | Price | Power Supply Current | Output Voltage | Wall Plug Style |
 Power Supply 24VDC 14.6A
|
$40.00 | 14.6 A | 24 V | — |
 Power Supply 24VDC 25A Current Limiting
|
$120.00 | 25 A | 24 V | — |
 Power Supply DIN Mount 24VDC 1A
|
$20.00 | 1 A | 24 V | — |
 Power Supply 12VDC 0.5A - EU
|
$1.50 | 500 mA | 12 V | European |
 Power Supply 12VDC 0.5A - US
|
$1.50 | 500 mA | 12 V | North American |
 Power Supply 12VDC 2.0A - AU
|
$10.00 | 2 A | 12 V | Australian |
 Power Supply 12VDC 2.0A - EU
|
$10.00 | 2 A | 12 V | European |
 Power Supply 12VDC 2.0A - UK
|
$10.00 | 2 A | 12 V | British |
 Power Supply 12VDC 5A
|
$20.00 | 5 A | 12 V | — |
 Power Supply 24VDC 1.0A - US
|
$10.00 | 1 A | 24 V | North American |
 Power Supply 24VDC 2.5A
|
$20.00 | 2.5 A | 24 V | — |
 Power Supply 24VDC 5A
|
$40.00 | 5 A | 24 V | — |
 Power Supply-12VDC 2.0A - US
|
$10.00 | 2 A | 12 V | North American |
Welcome to the SAF2020 quick start guide! In order to get started, make sure you have the following hardware on hand:
Next, you will need to connect the pieces:
Ensure that you use wires with an appropriate gauge for the amount of current in your system. We recommend using the included lug covers to protect against short circuits.
For more information, view our Selecting a Resistor for Your Power Guard guide.
The 30V 50A Power Guard Phidget (SAF2020) protects both your system from power surges caused by motors. For more information, view our Power Guard Guide.
| Power Supply Protector | |
|---|---|
| Trip Voltage | 37 |
| Continuous Current | 50 A |
| Physical Properties | |
| Operating Temperature Max | 85 °C |
| Operating Temperature Min | -40 °C |
| Recommended Wire Size | 16 - 26 AWG |
| Customs Information | |
| Canadian HS Export Code | 8471.80.00 |
| American HTS Import Code | 8471.80.40.00 |
| Country of Origin | CN (China) |
The enclosure for the SAF2020 may incorrectly say 40A instead of 50A.
| Date | Board Revision | Device Version | Comment |
|---|---|---|---|
| December 2024 | 0 | N/A | Product Release |
