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Southwire 44390 50 Amp Portable Surge Guard with Cover, 120/240V RV Power Protection

Southwire 44390 50 Amp Portable Surge Guard with Cover, 120/240V RV Power Protection
Southwire 50 Amp Portable Surge Guard with Cover, 120/240V RV Power Protection
 
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Part Number: 44390
Manufacturer: Southwire

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Southwire 44390 50 Amp Portable Surge Guard with Cover, 120/240V RV Power Protection

Southwire 44390 50 Amp Portable Surge Guard with Cover, 120/240V RV Power Protection

Portable 50 amp RV Surge Guard protector for 120/240V campground and shore power connections. Helps identify faulty park power, provides surge protection, and includes a fully enclosed receptacle cover for added connection protection.

About the Southwire 44390 Portable Surge Guard

The Southwire 44390 is a portable 50 amp RV Surge Guard protector designed for 120/240V RV shore power connections. It plugs in between the campground pedestal and the RV power cord to help identify faulty park power conditions and provide surge protection before power reaches the RV.

This model includes an easy-to-read LED fault chart, fully enclosed receptacle cover, and anti-theft lock ring on the cord. It is a plug-in power protection device for RVs using 50 amp shore power service.

⚡ 50A 120/240V Protection

Designed for 50 amp RV shore power connections

🛡️ Surge Guard

Provides surge protection and basic faulty park power detection

💡 LED Fault Chart

Easy-to-read indicators help identify common power faults

☔ Full Cover

Fully enclosed receptacle cover helps protect the RV cord connection

Key Features & Benefits

  • 50 Amp Portable Surge Guard: Plug-in RV power protection device for 50 amp 120/240V RV shore power systems
  • Identifies Faulty Park Power: Helps detect common campground pedestal wiring and power issues before they affect the RV
  • Surge Protection: Provides protection from power surges on the incoming shore power connection
  • 4200 Joules: Third-party product data commonly lists this model with 4200 joules of surge protection
  • LED Fault Chart: Easy-to-read indicator chart provides simple power analysis at the pedestal
  • Open Ground Detection: Tests for open ground conditions
  • Open Neutral Detection: Tests for open neutral conditions
  • Reverse Polarity Detection: Product data commonly lists reverse polarity testing/indication
  • Missing Leg 1 / Leg 2 Voltage Detection: Product data lists missing leg voltage indication for 50 amp service
  • Fully Enclosed Receptacle Cover: Helps protect the RV cord connection area while in use
  • Anti-Theft Lock Ring: Includes a lock ring on the cord for added theft deterrence when used with a compatible lock
  • Increased Receptacle Brass Thickness: Southwire notes increased receptacle brass thickness to help reduce heat

🚐 Common RV Applications

The Southwire 44390 is commonly used with RVs that plug into 50 amp 120/240V shore power, including larger travel trailers, fifth wheels, motorhomes, toy haulers, and other 50 amp RV electrical systems.

This product is a portable surge protector/power analyzer, not a 50 amp extension cord and not an automatic transfer switch.

Technical Specifications

Part Number 44390
Brand Southwire / Surge Guard
Product Type Portable RV surge protector / power protection device
Amp Rating 50 amps
Voltage Rating 120/240V AC RV service; Southwire page lists 50A 240V
RV Service Type 50 amp 120/240V RV shore power
Surge Protection Yes
Surge Rating 4200 joules commonly listed by retail product data
Protection / Testing Open ground, open neutral, reverse polarity, missing leg 1/leg 2 voltage, surge protection status, overheating plug/receptacle depending on listing reference
Indicator Type LED fault chart / power analysis indicators
Cover Fully enclosed receptacle cover
Anti-Theft Feature Anti-theft lock ring on cord
Listing UL/CUL listed according to product data
UPC 029892750435
Warranty Limited lifetime warranty commonly listed
Important Note This is not a 50 amp RV extension cord; it is a portable 50A Surge Guard protector with cover

📦 What's Included

• One Southwire 44390 50 amp portable Surge Guard protector with cover

📋 Use Notes

Plug the Surge Guard into the campground pedestal first, then connect the RV’s 50 amp power cord to the protected receptacle. Review the LED fault chart before powering the RV.

This unit helps identify common pedestal faults and provides surge protection, but it should not be used as a substitute for correcting unsafe campground wiring or damaged RV power cords.

⚠️ Electrical Safety

Use only with compatible 50 amp RV shore power connections. Do not use damaged cords, loose pedestal outlets, overheated plugs, or wet/unsafe electrical connections.

If the Surge Guard indicates a fault, disconnect power and have the pedestal or RV electrical system inspected before use.

RV Surge Protector Use Checklist

Check Before Use Why It Matters
RV Service Rating
This model is for 50 amp RV shore power systems
Pedestal Condition
Loose, burned, or damaged pedestal outlets can overheat and create unsafe power connections
Fault Indicators
Review the LED fault chart before powering the RV so unsafe conditions can be corrected first
Open Ground / Open Neutral
These wiring faults can create dangerous shock hazards or damage RV equipment
Reverse Polarity
Reverse polarity indicates improper wiring and should be corrected before RV power is used
Missing Leg Voltage
50 amp RV service uses two hot legs, so missing leg voltage can leave part of the RV electrical system without proper power
Product Type
This is a portable surge protector/power analyzer, not a 50 amp RV power cord

The Southwire 44390 is a 50 amp portable RV Surge Guard protector with cover for 120/240V shore power systems. It provides surge protection and helps identify faulty park power conditions such as open ground, open neutral, reverse polarity, missing leg voltage, and other pedestal power issues.



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