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Description
Blue Sea Ml-acr Automatic Charging Relay With Manual Control 24vdc 500aBlue Sea Systems ML ACR Automatic Charging Relay with Manual Control 24V DC 500A Model: 7623 BSS Automatically manages the charging of two large battery banks Allows paralleling of battery banks for emergency starting 500 Ampere continuous rating to support high output alternators Magnetic Latch (ML)ACR draws very low current (<40mA to monitor terminal voltage) in the ""ON"" or ""OFF"" states, and draws moderate current for very short time when
Blue Sea Systems ML-ACR Automatic Charging Relay with Manual Control - 24V DC 500A
Model: 7623-BSS- Automatically manages the charging of two large battery banks
- Allows paralleling of battery banks for emergency starting
- 500 Ampere continuous rating to support high-output alternators
- Magnetic Latch (ML)—ACR draws very low current (<40mA to monitor terminal voltage) in the ""ON"" or ""OFF"" states, and draws moderate current for very short time when changing state
- Dual sensing—senses charge on both battery banks
- Start Isolation (SI)—can be configured for temporary isolation of House loads from Engine circuit during engine cranking to protect sensitive electronics
- Engine Isolation (EI)—can be configured for isolation of two engines while both are running to protect engine electronics and maximize alternator output
- Senses charging on two battery banks
- Manual control switch provides an added level of safety allowing control with or without power, and offering LOCK OFF capability for servicing
500 Amp magnetic latching (bi-stable) relay automatically combines batteries during charging and isolates batteries when discharging and when starting engine
Specifications| Control Circuit Connection | Tinned Wire |
| Nominal Voltage | 24V DC |
| Manual Control | Yes |
| Engine Isolation | Yes |
| Mounting | #10 |
| Start Assist | Yes |
| Start Isolation | Yes |
| Amperage Operating Current | 13mA |
| Amperage Operating Current when changing state | <7.0A |
| Terminal Stud Torque | 140 in-lb (15.82 Nm) |
| Continuous Rating | 500A |
| Intermittent Rating | 700A (5 min) |
| Cranking Rating 30 sec | 1450A DC |
| Minimum Operating Temperature | -10° C |
| Maximum Operating Temperature | 60° C |
| Cable Size to Meet Ratings | 4/0 AWG x 2 |
| Live Current Switching | 300A @ 12V DC |
| Stud Material | Tinned Copper |
| Switching Cycles | 100000 |
| Terminal Ring Diameter Clearance | Terminal Ring Diameter Clearance |
| Terminal Stud Length | 1.50in (38.1 mm) |
| Terminal Stud Size | 3/8"" - 16 (M10) |
| Wire Size | 20 AWG |
What's in the Box:
- ML-ACR Automatic Charging Relay with manual Control 24v
- SPDT Remote Control Contura Switch - ON-OFF-ON
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
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
4.2 ★★★★★
Based on 1787 reviews
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Product Reviews
★★★★★ 5
Sooo good!
Color: Rice Probiotics (Barrier Jelly)
This is AMAZING! I used this over my serums and a retinol moisturizer before bed and woke up with the most moisturized and smooth skin I’ve had in forever. It’s a thick consistency but smooths on easily. It is a bit tacky for a little bit before it dries down but absolutely worth it. I learned about this on Beautiful and Bothered and Johnny is right!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 2, 2026
★★★★★ 4
A little goes a long way
Color: Rice Probiotics (Barrier Jelly)
I love overnight masks, especially for dull winter skin, and this is a really nice one! The texture is extremely thick and jelly like and it has a lovely cooling effect. It didn’t clog my pores or irritate my skin, though I do find that it feels a bit heavy and stifling if applied very liberally. But, after a few tried I’ve finally found the right amount, a little goes a very long way. Because of that, this little pot should last me a long time, even with regular use so it’s a great value! I like to layer it over my barrier protecting/repair products or over retinols and I wake up with hydrated, bright, and fresh skin in the morning! Highly recommend.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 13, 2026
★★★★★ 5
So extremely hydrating
Color: Rice Probiotics (Barrier Jelly)
Best hydrating mask I have ever seen! Used it once so far at night. I would only use at night because it is sticky and stays sticky BUT so worth it! I had applied it 3 hours before going to sleep. During that 3 hours I could see it working. My skin kept getting plumper by the hours. I am 62 years old with deep wrinkles and very dry skin. Guess what...my skin was not dry all day after using this mask overnight. Can not wait to keep using it. My deep wrinkles are plumped up. I have bouncy skin.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 1, 2026
★★★★★ 5
Great, way better than "slugging"!
Color: Rice Probiotics (Barrier Jelly)
It's heavy, but less so than Vaseline. Vaseline causes me to breakout even though I'm constantly told it shouldn't. This feels sticky, but otherwise calming and seems to help my skin heal. I have pcos - large pores and produce extra oil, rosacea, and just very sensitive skin. You definitely have to let it sit before laying down but my skin is always less irritated in the morning.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 7, 2026
★★★★★ 3
It's just okay
Color: Rice Probiotics (Barrier Jelly)
Meh. I feel like it just stayed on top of my skin and didn't really help. Not bad, but nothing special.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026
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