Prices are subject to change May 1, 2024.

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PWRguard Plus



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  • PWRguard Unit
  • Owner's Manual
View Details | Restock Alert. The estimated return to stock date is September 30, 2024.
Recommended Batteries
  • Automatic safety switch turns off if voltage exceeds 15 volts or drops below 11.0 volts, turns back on when voltage in safe operating range
  • Momentary voltage dips below 11.0 volts are ignored to prevent false tripping while transmitting
  • Programming of custom trip limits available, contact sales for details
  • Rated for 40 amps maximum while transmitting, 30 amps continuous duty
  • Soft turn-on / turn-off solid state switch protects radio and reduces in-rush relay contact bounce!
  • Indicator LEDs and audible alarm notify user when safety switch turns power off. Buzzer may be disabled by user
  • External sense input can be wired to a switch or low voltage (3-5 volt) DC input. May be used for:
    • Keyswitch to prevent rig use during antenna repairs or when unattended.
    • Cut power based on a sensor input such as a water alarm.
    • Power up based on a sensor such as light detector or low current switch.
  • Uses Anderson Powerpole® connectors
  • Dimensions: 1.25" H x 4.5" W x 2.75" D

Please click here for more information on Powerpole® Connectors.


Electronics: Maximum voltage: 35VDC
Current: < 30mA Normal Mode
  < 5mA Sleep Mode
Solid State Switch:
Continuous Current: 30A
Maximum Current: 40A
Nominal ON resistance: 5 milliohms
Switching Ranges:
Hi Trip: 15.0 ± 0.1VDC
Low Trip: 11.0 ± 0.1VDC
Auto Re-Start: 13.0 ± 0.1VDC
Switching Time Constants:
Hi-Trip: 10 milli-seconds
Low-Trip: 3.3 Seconds
Mode Select: 5.0 Seconds
Sleep Mode: 60 Minutes

Quality Declaration

This product has been tested to comply with Part 15 of the FCC rules for a Class B computer peripheral and digital device for use in the home and office. This testing is done to ensure the product does not generate RF interference.

Product designed, tested and used by ham radio operators onsite.


PWRguard Plus Diagram

Integrated Set Up:
DC Power Diagram
Connectors and Crimp tools
PWRcrimp - Crimp Tool for Powerpole® Connectors
$39.95Buy NowAdd to Wish List
Powerpole® Connector 15A Pack - 12 Pair
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Powerpole® Connector 15A Bulk Pack - 100 Pair
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Powerpole® Connector 30A Pack - 12 Pair
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Powerpole® Connector 30A Bulk Pack - 100 Pair
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Powerpole® Connector 45A Pack - 12 Pair
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Powerpole® Connector 45A Bulk Pack - 100 Pair
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Fuse Assortment Low Value
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Fuse Assortment High Value
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Buss 10A ATC Circuit Breaker
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Buss 15A ATC Circuit Breaker
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Buss 20A ATC Circuit Breaker
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Buss 25A ATC Circuit Breaker
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Buss 30A ATC Circuit Breaker
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Battery Box for Group 24 Size Battery
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Powerwerx 30 Amp Desktop Switching Power Supply w/Powerpole®
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Battery - Post to Stud Conversion Kit
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Battery Fuse & Ring Terminal Kit
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PWRnode 4 Pole Temporary Power Node
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Red/Black Cord
Zip Cord, Black/Red 10 AWG, 25 Feet
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Zip Cord, Black/Red 10 AWG, 50 Feet
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Zip Cord, Black/Red 10 AWG, 100 Feet
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Zip Cord, Black/Red 12 AWG, 25 Feet
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Zip Cord, Black/Red 12 AWG, 50 Feet
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Zip Cord, Black/Red 12 AWG, 100 Feet
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Powerpole® is a registered trademark of Anderson Power Products.
Powerpole® Connector Features & Benefits
  • Genderless Housings: Provide simplified assembly and minimize the number of components
  • Stackable Modular Housings: Available in four sizes to right size your connection need
  • Connection Versatility: Contacts for wire, PCB, or busbar all fit into the same housings
  • Low Resistance Connection: Silver or tin plated contacts inside housings that strongly force the contacts together
  • Color Coded Housings: Help ensure that connectors are assembled and mated correctly
  • Self Securing Design: Stainless steel springs create a robust force between the contacts that holds the connector in the mated condition, but allows it to be quickly disconnected.

Anderson Powerpole® Connectors and General Installation Tips

Powerpole® Connectors
  15A 30A 45A
Amps (UL) Per Pole 0 to 55 0 to 55 0 to 55
Volts (UL) Per Pole 600 600 600
Amps Continuous 15 30 45
Wire Gauge (AWG) 20 - 16 16 - 12 14 - 10
Polarized Housing
PDF Files
Data Sheet
Buy Powerpole® Pack View Options