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Description
Blue Sea Ml-acr Automatic Charging Relay 12vdc 500aBlue Sea Systems ML ACR Automatic Charging Relay 12V DC 500A Model: 7620 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
Blue Sea Systems ML-ACR Automatic Charging Relay - 12V DC 500A
Model: 7620-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
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 | 12V DC |
| Manual Control | No |
| 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
- 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
4.0 ★★★★★
Based on 30 reviews
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Product Reviews
★★★★★ 5
Excellent quality
Color: Silver
So, I took my two young children to a special photography shoot and they used something similar, it holds great, is not overbearing and lasts a very long time
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 2, 2026
★★★★★ 5
Mimimi
Color: White
So cute
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 21, 2026
★★★★★ 4
Great for Hair
Color: Silver
Good glitter for hair
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 8, 2026
★★★★★ 5
Sparkle
Color: Purple
We buy this for our dance team to use on game days to add a little extra sparkle.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 26, 2026
★★★★★ 5
Subtle but gorgeous
Color: Golden
I’d buy it just for the perfume bottle - just adorable.
The glitter is light and gives a delightful shimmer on skin and hair. Not saying exactly how old I am but I remember the 80s…if you older and just want some sparkle THIS IS IT. It’s light cover and sheen is just enough to add some glam without looking like you’ve just come off the pole… If you are heading in that direction just use an extra couple of puffs of glitter and you go girl… Will likely buy more colors, so fun!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 24, 2025
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