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/vaporproof

Ignition protected—safe for installation aboard gasoline powered boats

Supports high-output alternators up to 120 Amperes

Dual sensing

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)