Blue Sea Systems ML-ACR Automatic Charging Relay - 24V DC 500A
Model: 7621-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 |
24V 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 24v
- SPDT Remote Control Contura Switch - ON-OFF-ON
