{"product_id":"commodore-cm-202s-on-off-battery-disconnect-switch-300a-marine-and-rv-battery-isolator","title":"Commodore CM-202S On\/Off Battery Disconnect Switch, 300A Marine and RV Battery Isolator","description":"\u003cp\u003e\u003cstrong\u003eOn\/Off Battery Disconnect Switch\u003c\/strong\u003e\u003c\/p\u003e\u003cp id=\"isPasted\"\u003eThe 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.\u003c\/p\u003e\u003cp\u003eThis 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.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli id=\"isPasted\"\u003eHigh-Performance Ratings: Handles 300A continuous, 500A intermittent, and 900A cranking current, ensuring dependable performance for high-power marine or RV systems.\u003c\/li\u003e\n\u003cli\u003eDurable Tin-Plated Copper Studs: Features corrosion-resistant copper studs for maximum conductivity and long-lasting performance in harsh environments.\u003c\/li\u003e\n\u003cli\u003eVersatile Mounting Options: These can be surface-mounted or flush-mounted with snap-off side plates, offering flexible installation and clean cable management.\u003c\/li\u003e\n\u003cli\u003eWater-Resistant and Ignition Protected: Certified to ISO 8846 Marine standards, IP66-rated for protection against water jets, and safe for use in engine compartments.\u003c\/li\u003e\n\u003cli\u003eEasy Wire Access: The isolating cover includes three snap-off side pieces, allowing wiring from any direction while protecting rear terminals for enhanced safety.\u003c\/li\u003e\n\u003cli\u003eMeets Industry Standards: Complies with ABYC C-7, UL 1107, CSA C22.2 No.4, and other stringent safety regulations, ensuring compatibility and reliability.\u003c\/li\u003e\n\u003cli\u003eCompact and Lightweight Design: Weighing only 0.83 lbs (0.38 kg), the compact design saves space without compromising durability or performance.\u003c\/li\u003e\n\u003cli\u003eRugged Marine-Grade Construction: Built to withstand the harshest marine and off-grid environments, ensuring long-lasting protection and reliable operation.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMaximum Voltage: 48 VDC\u003c\/li\u003e\n\u003cli\u003eSwitch Type: Single Circuit On-Off\u003c\/li\u003e\n\u003cli\u003eBattery Inputs: 1\u003c\/li\u003e\n\u003cli\u003eColor: Grey\u003c\/li\u003e\n\u003cli\u003eCable Clearance for 4\/0 AWG Cables: 1.12 in (28.45 mm)\u003c\/li\u003e\n\u003cli\u003eCable Size to Meet Ratings: 4\/0 AWG (120mm2)\u003c\/li\u003e\n\u003cli\u003eSwitch Positions: 2\u003c\/li\u003e\n\u003cli\u003eBattery Combine: No\u003c\/li\u003e\n\u003cli\u003eAlternator Field Disconnect: No\u003c\/li\u003e\n\u003cli\u003eCranking Rating 30 seconds: 900A\u003c\/li\u003e\n\u003cli\u003eContinuous Rating: 300A\u003c\/li\u003e\n\u003cli\u003eIntermittent Rating: 500A (5 min)\u003c\/li\u003e\n\u003cli\u003eMounting Holes: Accept #10 Screw\u003c\/li\u003e\n\u003cli\u003eStud Material: Tinned Copper\u003c\/li\u003e\n\u003cli\u003eStud Torque: 120 in-lb (13.56 Nm)\u003c\/li\u003e\n\u003cli\u003eTerminal Stud Size: 3\/8 - 16 (M10)\u003c\/li\u003e\n\u003cli\u003eWeight: 0.65 lbs (0.29 kg)\u003c\/li\u003e\n\u003c\/ul\u003e \u003c!--- cis2:m2lsl5xp ---\u003e\n\u003cp\u003e\u003cstrong\u003eCommodore CM-202S On\/Off Battery Disconnect Switch\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe Commodore CM-202S On\/Off Battery Disconnect Switch provides dependable control for marine, RV, and off-grid electrical systems. Designed for single-circuit battery isolation, it supports up to 300A continuously, 500A intermittently, and 900A for cranking applications. This makes it suitable for managing high-power battery circuits while helping simplify system shutdown and electrical maintenance.\u003c\/p\u003e\u003cp\u003eBuilt for demanding environments, the switch features tinned copper studs for conductivity and corrosion resistance, along with an IP66-rated isolating cover that helps protect the rear terminals from water jets and debris. ISO 8846 Marine Ignition Protection certification supports use in engine compartments, while compliance with ABYC C-7, UL 1107, and CSA C22.2 No. 4 provides clearly defined industry-standard performance requirements.\u003c\/p\u003e\u003cp\u003eThe Commodore CM-202S supports both surface and flush mounting. Three snap-off side pieces provide wiring access from different directions, helping accommodate installation layouts and cable routing needs. The switch accepts 4\/0 AWG cable to meet its rated performance and uses 3\/8-16 terminal studs. Its gray housing and compact design make it a practical choice for professional installations, boat owners, RV users, and DIY electrical projects.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e300A continuous, 500A intermittent, and 900A cranking ratings support high-power battery applications.\u003c\/li\u003e\n\u003cli\u003eTinned copper studs provide conductive, corrosion-resistant electrical connections.\u003c\/li\u003e\n\u003cli\u003eIP66-rated isolating cover helps protect rear terminals from water jets and debris.\u003c\/li\u003e\n\u003cli\u003eISO 8846 Marine Ignition Protection supports installation in engine compartments.\u003c\/li\u003e\n\u003cli\u003eSurface-mount or flush-mount installation with three snap-off side pieces for flexible wire access.\u003c\/li\u003e\n\u003cli\u003eSingle-circuit on\/off operation provides straightforward battery isolation for marine, RV, and off-grid systems.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eProduct Details:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBrand: Commodore\u003c\/li\u003e\n\u003cli\u003ePart Number: CM-202S\u003c\/li\u003e\n\u003cli\u003eSwitch type: Single-circuit on\/off\u003c\/li\u003e\n\u003cli\u003eMaximum voltage: 48 VDC\u003c\/li\u003e\n\u003cli\u003eBattery inputs: 1\u003c\/li\u003e\n\u003cli\u003eSwitch positions: 2\u003c\/li\u003e\n\u003cli\u003eColor: Gray\u003c\/li\u003e\n\u003cli\u003eCranking rating: 900A for 30 seconds\u003c\/li\u003e\n\u003cli\u003eContinuous rating: 300A\u003c\/li\u003e\n\u003cli\u003eIntermittent rating: 500A for 5 minutes\u003c\/li\u003e\n\u003cli\u003eRecommended cable size to meet ratings: 4\/0 AWG\u003c\/li\u003e\n\u003cli\u003eStud material: Tinned copper\u003c\/li\u003e\n\u003cli\u003eTerminal stud size: 3\/8-16\u003c\/li\u003e\n\u003cli\u003eMounting holes: Accept #10 screws\u003c\/li\u003e\n\u003cli\u003eStandards: ISO 8846 Marine Ignition Protection, ABYC C-7, UL 1107, and CSA C22.2 No. 4\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eChoose the Commodore CM-202S for reliable, flexible battery disconnect control in marine, RV, and off-grid electrical systems.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSEO Meta Description:\u003c\/strong\u003e\u003cbr\u003eCommodore CM-202S battery disconnect switch delivers 300A continuous capacity, flexible mounting, IP66 protection, and marine ignition protection.\u003c\/p\u003e\u003cstyle\u003etable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }\u003c\/style\u003e\n\u003ctable class=\"productattributes\"\u003e\n\u003cthead\u003e\u003ctr\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003eTruck Freight: No\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eOversized: No\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cbr\u003e","brand":"Commodore","offers":[{"title":"Default Title","offer_id":44934315606105,"sku":"106828","price":42.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0623\/1818\/2489\/files\/106828XL.jpg?v=1789759844","url":"https:\/\/www.marinepartsonly.com\/products\/commodore-cm-202s-on-off-battery-disconnect-switch-300a-marine-and-rv-battery-isolator","provider":"Marine Parts Only","version":"1.0","type":"link"}