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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
4.5 ★★★★★
Based on 1691 reviews
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Product Reviews
★★★★★ 5
Great product
Highly recommend for teething. - different texture keeps puppy amused- little pricy - actually was cheaper in local store but already bought here.
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Reviewed in the United States on April 29, 2020
★★★★★ 5
Dog loves it- lasts long
Much bigger than expected
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Reviewed in the United States on November 20, 2020
★★★★★ 5
Great toy
Size: Large, Style: Crinkle Fry
This high-quality toy has been thoroughly enjoyed by my dogs. Its appropriate size and durability ensure its safety, even for my largest chewers. The toy’s design facilitates easy chewing, making it an excellent value for money. Notably, it surpasses the quality of other brands in my experience. Furthermore, the toy contributes to maintaining healthy and clean teeth, resulting in improved breath.
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Reviewed in the United States on August 6, 2025
★★★★★ 5
Great for strong chewers!
Size: Large, Style: Crinkle Fry
My puppy LOVES to chew this! It’s a great distraction from sticks outside and trying to chew other hard items. It’s not messy, since it’s hard and she can’t break pieces off. It’s nicer than bully stick since it has no smell. It keeps her busy!
It is heavy so it’s not ideal for a smaller dog. If your dog is a strong chewer or is teething, this is perfect!
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Reviewed in the United States on October 26, 2025
★★★★★ 5
Nearly indestructible
Size: Medium, Style: Pork Chomp, Size: Medium, Style: Pork Chomp
My dog will chew this until it’s tiny but it will take him months. These are the best toys for a dog that can chew through anything.
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Reviewed in the United States on April 14, 2026