Skip to product information

Blue Sea 4027 AC Isolation Cover - 5-1/4 x 7-1/2x3 [4027]

Authorized Dealer
In Stock
Regular price
$46.79
Regular price
$57.99
Sale price
$46.79
Shipping calculated at checkout.

SKU: CWR-20391   UPC: 632085040277

  • 10 items left in stock
Visa Mastercard American Express Discover PayPal Apple Pay Shop Pay
Free Shipping Orders over $149.99
Secure Checkout SSL Encrypted
Manufacturer Warranty Full Warranty Included

Questions? Call, text or email us.

925-222-LOTZ (5689)  ·  shop@lotzoutdoors.com

AC isolation cover for marine and RV electrical panels, providing insulation for exposed panel backs and mechanical protection in confined spaces.

This Blue Sea Systems cover encloses panels or other objects measuring up to 7-1/2 inches long, 5-1/4 inches wide, and 3 inches deep. Its lightweight construction can be drilled for wire entry and exit, helping accommodate installation routing. The cover is intended for panels with combined AC and DC and meets applicable ABYC requirements.

  • Provides electrical insulation for exposed panel backs, helping separate energized components from surrounding areas.
  • Offers mechanical protection for panel backs that protrude into lockers or other confined spaces.
  • Fits objects up to 7-1/2 inches long by 5-1/4 inches wide by 3 inches deep.
  • Lightweight material can be drilled for wire entrance and exit during installation.
  • Suitable for use with compatible Blue Sea Systems AC panel installations and other appropriately sized electrical panels.

Use the 4027 AC Isolation Cover behind a marine or RV electrical panel when the exposed rear side needs additional insulation and physical protection. The enclosure helps shield panel backs that extend into lockers, cabinetry, or other storage areas where contact with surrounding equipment could occur.

The cover accommodates a panel or other object up to 7-1/2 inches long, 5-1/4 inches wide, and 3 inches deep. Its lightweight material can be drilled to create openings for wire routing, allowing the installer to position entry and exit points to suit the installation. Blue Sea Systems identifies this cover for panels with combined AC and DC and states that it meets ABYC requirements for those applications.

Specification Details
Brand Blue Sea Systems
Model 4027
Product type AC isolation cover
Category Switches & Accessories
Cover size 7-1/2 in. long x 5-1/4 in. wide x 3 in. deep
SKU CWR-20391
UPC 632085040277
  • What is the Blue Sea Systems 4027 used for?
    It provides electrical insulation and mechanical protection for exposed backs of electrical panels.
  • What size panel does it cover?
    It covers a panel or other object up to 7-1/2 inches long, 5-1/4 inches wide, and 3 inches deep.
  • Can the cover be modified for wiring?
    Yes. The lightweight material can be drilled for wire entrance and exit.
  • Where is it typically installed?
    It is used behind compatible marine or RV electrical panels, including panels extending into lockers or other confined spaces.
  • Is it intended for combined AC and DC panels?
    Yes. The cover is specified for panels with combined AC and DC and meets ABYC requirements for those panels.
🚚 Shipping & Fulfillment

Over 30,000 at Lotz Outdoors ship the same day when ordered
by 2pm EST, so you can get your gear quickly for your next adventure.

Some products are fulfilled directly from our trusted third-party partners. As a result, these items may:

• Ship separately from other items in your order

• Have different shipping rates

• Not be eligible for free shipping promotions

We work hard to keep shipping fast, reliable, and transparent across our entire catalog, and any differences will be clearly shown at checkout.

⚠️ Shipping restrictions

Shipping restrictions apply to certain products. By purchasing, you confirm compliance with all local, state, and federal laws.

⚠️ California Proposition 65 Warning

⚠️ WARNING: This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

This may include but is not limited to:
- Lead and lead compounds
- Nickel and nickel compounds
- Phthalates (DEHP, DBP, BBP, etc.)
- Bisphenol A (BPA)
- Cadmium and cadmium compounds

For more information go to www.P65Warnings.ca.gov

Discount available for Military, First Responders, Medical Workers and Teachers

Unlock Discount
Blue Sea 4027 AC Isolation Cover - 5-1/4 x 7-1/2x3 [4027]