Blue Sea 7622 ML-Series Heavy Duty Automatic Charging Relay

The 7622 Manual Control Isolation Switch is designed specifically for marine and boating applications, providing reliable power management and enhanced safety for your vessel. This robust switch ensures seamless control over your electrical systems, whether you're on board for leisure or navigating challenging waters.

Key Features

• Manual Control: Equipped with a manual switch for added safety, allowing operation with or without power and offering a "Locked Off" position for secure servicing.
• Coil Voltage: Operates at 12 volts, suitable for standard marine electrical systems.
• High Current Rating: Supports up to 500 Amperes continuous rating, accommodating high-output alternators and demanding marine electronics.
• Energy Efficient: Magnetic Latch (ML)-ACR consumes less than 10 mA in "ON" or "OFF" states and only a moderate current during state changes, ensuring minimal power loss.
• Isolation Features:
  • Start Isolation (SI): Temporarily isolates house loads from the engine circuit during engine cranking to protect sensitive electronics.
  • Engine Isolation (EI): Isolates dual engines while both are running, safeguarding engine electronics and maximizing alternator performance.
• Battery Management: Monitors and senses charging on two separate battery banks, ensuring optimal power distribution.
• LED Indicators: Provides remote visual indicators for combined, isolated, voltage lockout, start, and engine isolation states.
• Durable Construction: Features 3/8"-16 tin-plated copper studs for maximum conductivity and resistance to corrosion, essential for marine environments.
• Flexible Connectivity: 7/8" (22mm) stud length accommodates multiple cable terminals for versatile installation options.
• Safety Enhancements: Includes label recesses for circuit protection and silver alloy contacts for high reliability when switching live loads.

Technical Specifications

Feature	Details
Model Number	7622
Manual Control	Yes
Coil Voltage	12V
Continuous Rating	500 Amperes
Magnetic Latch Current	<10 mA
Stud Size	3/8"-16 Tin-Plated Copper
Stud Length	7/8" (22mm)
Alternator Support	Up to 500 Amps

Safety Information

WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

Additional Resources

Owner's Manual (PDF)

Orders of physical products placed by 3 PM EST M-F typically ships the same day, if all requested items are in stock. Weekend orders will typically ship on Monday.

Shipping takes 2-7 days.

We currently ship to the Contiguous 48 States.

Life of Sailing merch is custom made for the customer after an order is placed. Total turnaround is typically 7-14 days from order to doorstep.