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On/Off Battery Disconnect Switch
The Commodore On/Off Battery Disconnect Switch provides a reliable, durable, and safe solution for managing your marine or RV electrical systems. With a 300A continuous rating and a 900A cranking rating, this battery switch is designed to handle high-power applications, ensuring stable operation for your boat, RV, or off-grid systems. Its tin-plated copper studs offer superior conductivity and corrosion resistance, while the IP66-rated isolating cover provides robust protection against water and debris.
This versatile switch can be surface-mounted or flush-mounted, with snap-off side pieces allowing wiring access from any direction. Designed to meet stringent marine safety standards, including ISO 8846 Marine Ignition Protection, this switch is a must-have for any professional or DIY marine electrical system. Built for durability and reliability, the CM-202S ensures your system stays safe and operational in even the harshest conditions.
Features:
- High-Performance Ratings: Handles 300A continuous, 500A intermittent, and 900A cranking current, ensuring dependable performance for high-power marine or RV systems.
- Durable Tin-Plated Copper Studs: Features corrosion-resistant copper studs for maximum conductivity and long-lasting performance in harsh environments.
- Versatile Mounting Options: These can be surface-mounted or flush-mounted with snap-off side plates, offering flexible installation and clean cable management.
- Water-Resistant and Ignition Protected: Certified to ISO 8846 Marine standards, IP66-rated for protection against water jets, and safe for use in engine compartments.
- Easy Wire Access: The isolating cover includes three snap-off side pieces, allowing wiring from any direction while protecting rear terminals for enhanced safety.
- Meets Industry Standards: Complies with ABYC C-7, UL 1107, CSA C22.2 No.4, and other stringent safety regulations, ensuring compatibility and reliability.
- Compact and Lightweight Design: Weighing only 0.83 lbs (0.38 kg), the compact design saves space without compromising durability or performance.
- Rugged Marine-Grade Construction: Built to withstand the harshest marine and off-grid environments, ensuring long-lasting protection and reliable operation.
Specifications:
- Maximum Voltage: 48 VDC
- Switch Type: Single Circuit On-Off
- Battery Inputs: 1
- Color: Grey
- Cable Clearance for 4/0 AWG Cables: 1.12 in (28.45 mm)
- Cable Size to Meet Ratings: 4/0 AWG (120mm2)
- Switch Positions: 2
- Battery Combine: No
- 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: 0.65 lbs (0.29 kg)
Specifications:
- Continuous Amperage: 300
- Positions: 2
- Box Dimensions: 3"H x 3"W x 4"L WT: 0.5 lbs
- UPC: 817683023154
Brochure (pdf)
FAQs
Product & Usage
1. Is your gear authentic and warranty-backed?
Yes — we are an authorized US dealer for 300+ marine electronics brands. Every order ships with the manufacturer’s full warranty.
2. Are these products beginner-friendly?
Yes. Our products are designed for both seasoned boaters and first-time owners. Each unit ships with a manufacturer manual, and we’re happy to answer setup questions over email.
3. Are these products built for marine conditions?
Yes. Marine electronics are engineered for saltwater spray, vibration, and weather. Check the product specs for IPX waterproof rating and saltwater certifications.
Maintenance & Accessories
1. What maintenance does marine electronics require?
Rinse with fresh water after saltwater exposure, store in a dry place, and follow your manufacturer’s cleaning and storage instructions.
2. Can I buy replacement parts and accessories separately?
Yes — we carry replacement parts, mounts, transducers, cables, and accessories for the brands we stock.
3. Do you provide product manuals or installation guides?
Every product ships with the original manufacturer’s manual. Digital copies and detailed installation guides are typically available on the brand’s website.
Warranty & Guarantee
1. Does my purchase include a warranty?
Yes — every order includes the full manufacturer warranty. Coverage length varies by brand (typically 1–3 years for Garmin, Lowrance, Raymarine, Simrad, Humminbird, Furuno, and others).
2. How do I register for warranty coverage?
Register directly with the manufacturer using your unit’s serial number. Manufacturer registration is the fastest path to warranty support if you ever need it.
3. What does the manufacturer warranty cover?
Defects in materials and workmanship under normal use. Damage from impact, improper installation, or saltwater corrosion (without protection) may be excluded. Check brand-specific terms in your unit’s documentation.
4. Can I extend the warranty?
Some manufacturers offer extended-coverage programs through their registration portals. We don’t sell third-party warranty programs.
Purchasing & Support
1. How fast does my order ship?
Orders placed before 4pm EST Monday–Friday ship the same business day via UPS from our NJ or FL warehouses. Continental US delivery typically takes 3–7 business days for Economy.
2. Do you offer bulk or fleet pricing?
Yes — we offer volume pricing for fleet operators, marinas, dealers, and commercial customers. Email support@marineelectronicsdepot.com with your needs.
3. How can I contact support?
Email support@marineelectronicsdepot.com or call during business hours (Mon–Fri 9am–5pm ET). We’re happy to help with pre-purchase questions, order status, or post-sale support.
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