BLUE SEA 7620 ML-ACR Automatic Charging Relay -12V DC 500A

BLUE SEA 7620 ML-ACR Automatic Charging Relay -12V DC 500A

Part #: 7620

A 500 amp magnetic latching (bi-stable) relay automatically combines batteries during charging and isolates batteries when discharging and when starting the engine. Automatically and efficiently manages the charging of two large battery banks, with no voltage loss. A 500 amp charging relay allows two battery banks to be charged from a single source, such as an alternator, but keep batteries isolated when not charging. A manual control switch provides an added level of safety allowing overriding

A 500 amp magnetic latching (bi-stable) relay automatically combines batteries during charging and isolates batteries when discharging and when starting the engine. Automatically and efficiently manages the charging of two large battery banks, with no voltage loss. A 500 amp charging relay allows two battery banks to be charged from a single source, such as an alternator, but keep batteries isolated when not charging. A manual control switch provides an added level of safety allowing overriding control, with or without power, and offering the ability to LOCK OFF the relay for servicing.

Features:

  • 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)—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
  • 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 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 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 13.5V
Combine 90 sec 13.0V
Open 10 sec 12.35V
Open 30 sec 12.75V
Open High 16.2V
Weight 2.04lb (0.93 kg)

Manufacturer: Blue Sea Systems

Part #: 7620

Length/Depth: 5.47 in.

Width: 3.75 in.

Height: 2.03 in.

Weight: 2.04 lbs.

Continuous Rating: 500 Amps

Intermittent Rating: 700 Amps

Voltage: 12 VDC

Max Cable Size: 4/0 AWG

Manual Operation: Yes

Start Isolation: Yes

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