Blue Sea Systems ML Series Automatic Charging Relay - available in 12V or 24V.
500 Amp magnetic latching (bi-stable) relay automatically combines batteries during charging and isolates batteries when discharging and when starting engine.
Includes the vibration, shock, thermoshock, moisture & salt spray resistant SPDT Remote Control Contura Switch - ON-OFF-ON (2146).
Features:
- Magnetic Latching (ML) relay draws very low current in the ON state
- 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 maximise alternator output
- Manual override knob provides an added level of safety allowing control with or without power and offering LOCKED OFF capability for servicing
- Senses charging on two battery banks
- LED output to remotely indicate switch state – requires optional LED or Remote Control Contura Switch with integrated LED (included in retail package)
- 3/8″-16 tin-plated copper studs for maximum conductivity and corrosion resistance
Specifications:
ML-ACR DC 500A
|
12V
|
24V
|
Control Circuit Connection
|
Tinned Wire
|
Tinned Wire
|
Nominal Voltage
|
12V DC
|
24V DC
|
Manual Control
|
Yes
|
Yes
|
Engine Isolation
|
Yes
|
Yes
|
Mounting
|
#10
|
#10
|
Start Assist
|
Yes
|
Yes
|
Start Isolation
|
Yes
|
Yes
|
Amperage Operating Current
|
13mA
|
13mA
|
Amperage Operating Current when changing state
|
<7.0A
|
<7.0A
|
Terminal Stud Torque
|
140 in-lb (15.82 Nm)
|
140 in-lb (15.82 Nm)
|
Continuous Rating
|
500A
|
500A
|
Intermittent Rating
|
700A (5 min)
|
700A (5 min)
|
Cranking Rating 30 sec
|
1450A DC
|
1450A DC
|
Minimum Operating Temperature
|
-10° C
|
-10° C
|
Maximum Operating Temperature
|
60° C
|
60° C
|
Cable Size to Meet Ratings
|
4/0 AWG x 2
|
4/0 AWG x 2
|
Live Current Switching
|
300A @ 12V DC
|
300A @ 12V DC
|
Stud Material
|
Tinned Copper
|
Tinned Copper
|
Switching Cycles
|
100000
|
100000
|
Terminal Ring Diameter Clearance
|
1.12in (28.45 mm)
|
1.12in (28.45 mm)
|
Terminal Stud Length
|
1.50in (38.1 mm)
|
1.50in (38.1 mm)
|
Terminal Stud Size
|
3/8" - 16 (M10)
|
3/8" - 16 (M10)
|
Wire Size
|
20 AWG
|
20 AWG
|
Relay Contact Position
|
|
|
Combine 30 sec
|
13.5V
|
27.0V
|
Combine 90 sec
|
13.0V
|
26.0V
|
Open 10 sec
|
12.35V
|
24.7V
|
Open 30 sec
|
12.75V
|
25.5V
|
Open High
|
16.2V
|
32.4V
|