Description
BLUE SEA SYSTEMS ML-ACR Automatic Charging Relay with Manual Control – 24V DC 500A – 7623.Ã’šÃ‚ 500 Amp magnetic latching (bi-stable) relay automatically combines batteries during charging and isolates batteries when discharging and when starting engine
- Manual control switch provides an added level of safety allowing control with or without power, and offering LOCK OFF capability for servicing
- Includes ML-Series Remote Control Contura Switch PN 2146
- 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)ââ’š¬”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 sensingââ’š¬”senses charge on both battery banks
- Start Isolation (SI)ââ’š¬”can be configured for temporary isolation of House loads from Engine circuit during engine cranking to protect sensitive electronics
- Engine Isolation (EI)ââ’š¬”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
- LED output to remotely indicate when batteries are combined, isolated, in voltage lockout, or in Start or Engine isolation
- 3/8″-16 tin-plated copper studs for maximum conductivity and corrosion resistance
- 7/8″ (22mm) stud length accepts multiple cable terminals
- Silver alloy contacts provide high reliability for switching live loads
- Label recesses for circuit identification
| Specifications | |
|---|---|
Control Circuit ConnectionÃ’šÃ‚  | Tinned Wire |
| Nominal Voltage | 24V DC |
| Manual ControlÃ’šÃ‚ | Yes |
| Engine IsolationÃ’šÃ‚ | Yes |
| Mounting | #10 |
| Start AssistÃ’šÃ‚ | Yes |
| Start IsolationÃ’šÃ‚ | Yes |
| Amperage Operating Current | 13mAÃ’šÃ‚ |
| Amperage Operating Current when changing state | <7.0A |
| Terminal Stud Torque | 140 in-lb (15.82 Nm) |
| Continuous RatingÃ’šÃ‚ | 500A |
| Intermittent RatingÃ’šÃ‚ | 700A (5 min) |
| Cranking Rating 30 secÃ’šÃ‚ | 1450A DC |
| Minimum Operating Temperature | -10Ã’š° C |
| Maximum Operating Temperature | 60Ã’š° 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 | 1.12in (28.45 mm) |
| Terminal Stud Length | 1.50in (38.1 mm) |
| Terminal Stud Size | 3/8″ – 16 (M10) |
| Wire Size | 20 AWG |
| Relay Contact Position | |
| Combine 30 sec | 27.0V |
| Combine 90 sec | 26.0V |
| Open 10 sec | 24.7V |
| Open 30 sec | 25.5V |
| Open High | 32.4V |
| Weight | 2.10lb (0.95 kg) |
The ML-ACR (Automatic Charging Relay) and ML-RBS (Remote Battery Switch), when paired, offer complete battery management of large battery banks with the push of a button. In addition to automatically sharing the charge from an engineââ’š¬Ã¢’ž¢s alternator between the start and auxiliary battery, the ML-ACR control switch provides momentary battery combining to assist with starting in the event of a low engine battery. Multiple remote battery switches can be easily connected to the ML-ACR with the optional Paralleling Link Bus for a complete remote battery management Subsystem.
This is a special order item. Most special order items are shipped within 72 hours of ordering, however, some items are not in stock. We will let you know if the item is not available. Alternatively, you may call us at 1-866-473-0420.
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