Blue Sea BS 7620 ML ACR 500A Automatic Charging Relay with Magnetic Latch (bi-stable relay) automatically combines batteries during charging and isolates batteries when discharging and starting the engine.
KEY FEATURES
- Includes the Contura switch remote control of the ML-Series Contura Switch PN 2146
- Automatically manages the charging of two large battery banks
- Allows parallel connection of battery banks for emergency start
- 500 Ampere continuous current capacity to support high-performance alternators
- Magnetic Latch (ML)-ACR consumes very little current (<40mA for monitoring terminal voltage) in "ON" or "OFF" operating states and consumes only low current for a very short time during state changes.
- Dual sensing charge on both battery banks
- Start Isolation (SI) - can be configured for temporary isolation of loads from the engine circuit to protect sensitive electronics.
- Engine Isolation (EI) - can be configured to isolate two engines while both are running to protect engine electronics and maximize alternator performance
- LED output for remote indication when batteries are combined, isolated, connected with voltage lock, or during start or engine disconnection.
- 3/8"-16 tinned studs for maximum conductivity and corrosion resistance
- 7/8" (22mm) stud length for multiple cable connections
- Silver alloy contacts provide high reliability in switching under voltage
- Label recesses for circuit identification
TECHNICAL DETAILS
- Nominal voltage: 12V DC
- Manual control: no
- Engine Isolation (condition: 2 engines running, one relay is open and one closed, engine 1 start battery and engine 2 start battery are isolated to protect engine electronics.
- Mounting: #10
- Start Assist - Starting the engine - relay is closed and combines batteries
When the starter battery is low, the batteries are combined to share power. - Start Isolation - Starting the engine - relay opens isolating batteries
The batteries are isolated to protect sensitive electronics from voltage drops and spikes. - Current operating current: 13mA
- Operating current consumption during state change: <7.0A
- Continuous charging current: 500A
- Peak charging current: 700A (5 min)
- Starter power 30 sec: 1450A DC
- Recommended cable gauge: 4/0 AWG x 2
- Live current switching: 300A @ 12V DC
- Switching cycles: 100000
- Terminal stud torque: 15.82 Nm
- Ring cable lug diameter clearance: 28.45 mm
- Terminal stud length: 38.1 mm
- Terminal stud size: 3/8" - 16 (M10)
- Line diameter: 20 AWG
- Relay contact position: combined 30 sec: 13.5V
combined 90 sec: 13.0V
open 10 sec: 12.35V
open 30 sec: 12.75V
open high: 16.2V