SI-ACR Automatic Charging Relay - 12/24V DC 120A

Blue Sea Systems
SKU
BSS7610

Automatically combines batteries during charging, isolates batteries when discharging and when starting engines


Features

  • Protects sensitive electronics by temporary isolation of house loads from engine circuit during engine cranking
  • Designed for 12 or 24 volt systems
  • 12/24 volt auto-ranging voltage input
  • Hermetically sealed contacts/vapor proof
  • Ignition protected—safe for installation aboard gasoline powered boats
  • Supports high-output alternators up to 120 Amperes
  • Dual sensing

 

Optional Features

  • Start Isolation allows temporary isolation of House loads from Engine circuit during engine cranking to protect sensitive electronics from sags and spikes
  • Remote LED remotely indicates ACR states - requires optional LED
£138.26
RRP Ex. VAT
Specifications
Nominal Voltage 12V DC
24V DC
Start Isolation* Yes
Amperage Operating Current 175mA (combined)
15mA (open)
Terminal Stud Torque 140 in-lb (15.82 Nm)
Continuous Rating** 120A
Intermittent Rating*** 210A (5 min)
Cable Size to Meet Ratings 1/0 AWG
Stud Material Tinned Copper
Terminal Ring Diameter Clearance 1.12in (28.45 mm)
Terminal Stud Length 0.875in (22.23 mm)
Terminal Stud Size 3/8" - 16 (M10)
Relay Contact Position  
Combine 30 sec 13.6V @ 12 V
27.2V @ 24 V
Combine 90 sec 13.0V @ 12 V
26.0V @ 24 V
Open 10 sec 12.35V @ 12 V
24.7V @ 24 V
Open 30 sec 12.75V @ 12 V
25.5V @ 24 V
Open High 16.0V @ 12 V
30.0V @ 24 V
Over Voltage Lockout 16.0V @ 12V
32.0V @ 24V
Under Voltage Lockout**** 9.5V @ 12 V
19V @ 24 V
Weight 1.25lb (0.57 kg)

 

*Condition: Engine starting

  • Relay is open isolating batteries
  • Batteries are isolated to protect sensitive electronics from voltage sags and spikes

**The maximum current a switch is designed to conduct for an indefinite period.

***The maximum amount of current a switch is designed to carry for a minimum of a designated period of time.

****As a safety feature, some ACRs prevent combining into a severely discharge battery. A dual-sensing ACR will monitor the voltage on both batteries and will not connect if either battery is below the undervoltage lockout level. Use caution when combining into a battery with extremely low voltage, because this might represent a faulty battery or a problem elsewhere in the system.