JL Audio XMD-MCB-30 Waterproof Ignition Protected Circuit Breaker is a marine-grade 30 amp circuit breaker designed to protect electrical circuits in marine and powersports audio installations. Its waterproof, ignition-protected design delivers reliable over-current protection in harsh environments and satisfies marine safety standards. This breaker automatically resets after a fault condition clears and features a rugged corrosion-resistant housing. It is intended for accessory and audio power circuit protection, not as a primary battery disconnect device. Key Features 30 amp waterproof circuit breaker Ignition protected for marine environments Automatic reset after fault condition clears Rugged corrosion-resistant housing Designed for marine and powersports accessory circuits Installation Notes Mount the circuit breaker in an accessible location near the protected circuit. Connect in line with the positive power lead feeding the accessory or audio component. Use appropriate wire sizing and follow JL Audio wiring and breaker mounting guidelines for safety and reliability. What’s Included JL Audio XMD-MCB-30 waterproof ignition protected circuit breaker Identifiers & Packaging Garmin PN 010-13681-00 JL Legacy PN 90944 MPN XMD-MCB-30 UPC 699440909440 Sold As Each Why Buy From MCOR Automotive 22+ year Authorized JL Audio dealer with marine and powersports install expertise Spec-accurate listings with verified product compatibility Expert support for JL Audio electrical protection solutions Fitment & Installation Help Need help confirming fitment or installation parts? Use our Fit Guide or contact us through the chat button before ordering. Authorized Retailer & Warranty MCOR Automotive is an authorized JL Audio / Garmin retailer. Products purchased from MCOR include applicable manufacturer warranty coverage when installed and used according to manufacturer guidelines.