SEAFLO 300A Battery Disconnect Switch, 12V/24V/48V Heavy-Duty Single Circuit ON/OFF Isolator

Model # 23745839 Mfg # SFCBS-300-202-A
5 out of 5 Customer Rating
Orders placed by 3 PM EST typically ship the same day. Orders placed after this time will be processed the next business day.


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SEAFLO 300A Battery Disconnect Switch, 12V/24V/48V Heavy-Duty Single Circuit ON/OFF Isolator
Model # 23745839 Mfg # SFCBS-300-202-A
5 out of 5 Customer Rating
Orders placed by 3 PM EST typically ship the same day. Orders placed after this time will be processed the next business day.


Get 5X West Advantage Points on all purchases for a limited time! Not a rewards member? JOIN NOW

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SEAFLO 300A Battery Disconnect Switch – 12V/24V/48V Heavy-Duty Single Circuit ON/OFF Isolator | IP66 Waterproof | Marine, RV, Auto Use | CE & RoHS Certified (On/Off No-Cover)

The SEAFLO 300A Battery Disconnect Switch (Model: SFCBS-300-202-A) is a heavy-duty, single circuit ON/OFF isolator designed for 12V, 24V, and 48V DC systems. Ideal for marine, RV, automotive, and off-grid applications, it safely disconnects batteries to prevent power drain during storage or maintenance. Engineered with high-conductivity tin-plated copper studs and a vibration-resistant one-piece terminal design, this switch ensures reliable, long-lasting performance even in harsh environments. Its compact, streamlined build offers a cost-effective solution without a protective cover, while still delivering IP66-rated waterproof protection. Certified to meet ABYC, UL 1500, and SAE J1171 standards, this switch is built to perform in demanding outdoor and marine conditions. Backed by SEAFLO’s 4-Year Limited Warranty.

Key Features

  • Supports 12V, 24V, and 48V DC systems with 300A continuous, 500A intermittent (5 min), and 900A cranking (30 sec) ratings.
  • Tin-plated copper studs (3/8"–16 / M10) deliver excellent conductivity and corrosion resistance.
  • One-piece terminal design prevents loosening in high-vibration environments.
  • IP66 waterproof rating for superior resistance to water, dust, and weather exposure.
  • Complies with ABYC, UL 1500, and SAE J1171 standards; 4-Year Limited Warranty included.

Above / Below Deck Manual
Amperage 300A
Capacity Rectangular
Compatibility 12-48VDC
Height 3.17 Inch
Length 2.18 Inch
Material Plastic, Acrylonitrile Butadiene Styrene (ABS)
Weight 13.28 Ounce
Width 2.18 Inch

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