AUTOMATIC CHARGING RELAY, SI-ACR 12/24v, 120 AMP

Automatically manages the charging of two battery banks and can be configured for temporary isolation of House loads from Engine circuit during engine cranking to protect sensitive electronics. Rated at 120A continuous and supports high-output alternators. Built in LED light indicates when batteries are combined and blinks when the undervoltage or the starting isolation feature is engaged.
Maximum Cable Size: 1/0 AWG Terminal Stud Size: 3/8″-16
(accepts M10 ring terminal)
Clip-on cover protects terminal connections. 12/24V auto ranging voltage input. Hermetically sealed contacts/vapour-proof. Ignition protected, Safe for installation aboard gasoline powered boats. Meets UL 1500, SAE J1171 external ignition protection requirements and is IP67 certified for temporary immersion for 30 minutes.