BLUE SEA SYSTEMS SI Series Automatic Charging Relay Isolator

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 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 Specifications: - Nominal Voltage: 12V DC, 24V DC - Start Isolation: Yes - Amperage Operating Current: 175mA (combined) 15mA (open) - Continuous Rating: 120A - Intermittent Rating: 210A (5 min) - Cable Size to Meet Ratings: 1/0 AWG - Terminal Ring Diameter Clearance 1.12in (28.45 mm) - Terminal Stud Length: 0.875in (22.23 mm) - Terminal Stud Size: 3/8´ - 16 (M10) - Terminal Stud Torque: 140 in-lb (15.82 Nm) - Weight: 1.25lb (0.57 kg)