Commodore 4-Position Compact Dual Battery Selector Switch [CM-402S]
SKU: 9892611931

Commodore 4-Position Compact Dual Battery Selector Switch [CM-402S]

Sale price$44.99 Regular price$49.99
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Description

Commodore 4-Position Compact Dual Battery Selector Switch [CM-402S]4 Position Compact Dual Battery Selector Switch The 4 Position Battery Selector Switch is the ultimate solution for managing multiple battery banks in marine or RV electrical systems. Designed for 12V to 32V applications, this switch allows you to isolate battery banks, combine them, or direct power to all loads with a simple turn. Engineered with tin plated copper studs, the switch ensures maximum conductivity and corrosion resistance for reliable

4-Position Compact Dual Battery Selector Switch

The 4-Position Battery Selector Switch is the ultimate solution for managing multiple battery banks in marine or RV electrical systems. Designed for 12V to 32V applications, this switch allows you to isolate battery banks, combine them, or direct power to all loads with a simple turn. Engineered with tin-plated copper studs, the switch ensures maximum conductivity and corrosion resistance for reliable long-term performance in harsh environments.

This heavy-duty switch is IP66-rated for water resistance and features an ignition-protected design, meeting ISO 8846 and ABYC safety standards. The isolating cover with three snap-off side pieces protects rear contacts while allowing versatile wire access in any direction. With its robust one-piece terminal stud design and user-friendly operation, this battery switch is ideal for boats, RVs, and other off-grid applications requiring efficient power management.

Features:

  • Switches Between 4 Positions: Allows flexible power management by isolating battery banks, combining them, or directing power to all loads for maximum versatility.
  • Tin-plated copper Studs: Provides exceptional conductivity and corrosion resistance, ensuring efficient operation in harsh marine or RV environments.
  • Durable One-Piece Terminal Stud Design: Prevents loosening over time, ensuring a secure connection and stable performance for extended use.
  • Isolating Cover with Snap-Off Sides: Protects rear contacts while allowing easy wire access from any direction, making installation quick and hassle-free.
  • IP66 Water-Resistant Rating: Built to withstand powerful water jets, making it perfect for marine applications or environments exposed to moisture and dust.
  • Meets Strict Safety Standards: Certified to ISO 8846 Marine Ignition Protection, ABYC, UL 1500, and SAE J1171, ensuring compliance with industry-leading safety requirements.
  • Compact and Lightweight Design: Weighing just 0.83 lbs (0.38 kg), this switch is compact yet robust, saving space while delivering maximum performance.
  • High Current Handling Capability: Rated for 300A continuous and 900A cranking, this switch is ideal for high-power applications like engine start and onboard systems.

Specifications:

  • Maximum Voltage: 32 VDC
  • Switch Type: Selector 4-Position
  • Battery Inputs: 1
  • Color: Red
  • Cable Clearance for 4/0 AWG Cables: 1.12 in (28.45 mm)
  • Cable Size to Meet Ratings: 4/0 AWG (120mm2)
  • Switch Positions: 4
  • Battery Combine: Yes
  • Alternator Field Disconnect: No
  • Cranking Rating 30 seconds: 900A
  • Continuous Rating: 300A
  • Intermittent Rating: 500A (5 min)
  • Mounting Holes: Accept #10 Screw
  • Stud Material: Tinned Copper
  • Stud Torque: 120 in-lb (13.56 Nm)
  • Terminal Stud Size: 3/8" - 16 (M10)
  • Weight: 0.77 lbs (0.35 kg)

Specifications:

  • Continuous Amperage: 300
  • Positions: 4
  • Box Dimensions: 3"H x 3"W x 3"L WT: 0.7 lbs
  • UPC: 817683023161

Brochure (pdf)
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
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  • Delivery to the USA:
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 9892611931

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Verified Purchase
Ben
Alexandria, US
★★★★★ 5
The watch of our era
Color: Blackout
Bought this ‘used’ but looks like only the box had some ‘damage’ but the watch was perfectly brand new. I’ve been wearing a timex Ironman watch since my tenth birthday. I’ve served in the Marine corps and wore one while on tour. I’ve worn them snorkeling and diving. I’m a mechanic and have worn it on my belt loop while working, and depending what I’m doing I’ll leave it on. I wear it in the shower, the pool, beach, kayaking, skydiving, mudding, surfing, fishing, shooting, and while relaxing in my recliner. I’ve only had one battery die, and it was easily replaced. This is the watch of our era. Stop reading this review and buy one!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 27, 2026
S
Verified Purchase
Starboard10
Boise, US
★★★★★ 3
Very dim
Color: Black/Yellow Accent
This was a gift for our son. The watch functions well, but I returned it because the screen was very hard to read.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 16, 2026
K
Verified Purchase
Kimberly L. Howard
Houston, US
★★★★★ 5
Trust this seller speaks the truth!!
Color: C-Blue
Comfort is a 10! Appearance is very very nice!! Readability is excellent! Accuracy is 💯 !! Quality is a 10! Value - couldn’t love it more!! At first I didn’t think that he sent me a watch without a battery, but lo and behold I opened the box again and definitely saw the watch was working! I’ve been scammed several times- but this is truly AWESOME !!! Thank you all!!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026
M
Verified Purchase
MARK ELI UBOL VILLARUEL
Omaha, US
★★★★★ 5
It tells the time, day of the week and date of the month.
Color: A-Green Luminous, Color: A-Green Luminous
Affordable, functional, and practical. And it glows in the dark.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 3, 2026
J
Verified Purchase
Jerry W. Eastman
Battle Creek, US
★★★★★ 4
Hard to set day/date.
Color: A-Black
Watch very professional looking and appears to be well made. Everything about this watch is what I have been looking for at a reasonable price. The only issue I have is how to set the watches features, time, date, and day. The instructions are very clear and well written, to a point. That point being the instructions say to move the "crystal" to the first notch, to adjust the day/date, and the second notch for to set the time. What the instructions fail to mention is the day/date adjustment must be turned a full 24 hours to the next day or date settlings. Also, trying to hit just the second notch is almost impossible as the is no distinct way of knowing if you are in it or not,
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 30, 2026

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