Bluewater Enterprises 9800-7101-00 Automatic Charging Relay, 120A, 12V, Black

Bluewater Automatic Charging Relay (ACR/VSR), 120A Continuous / 140A Intermittent, 12V, Black

Bluewater Enterprises Automatic Charging Relay (ACR/VSR), Part Number 9800-7101-00, provides automatic battery management for marine and recreational vehicle electrical systems. Designed for 12V dual-battery installations, the relay connects battery banks when charging voltage is detected and separates them when voltage drops. This helps keep both batteries charged while protecting the starting battery from unnecessary discharge.

Supporting alternators up to 120A, the Bluewater 9800-7101-00 is well suited for boats with separate starting and house batteries, including sailboats and fishing boats, as well as RV applications. The start-isolation feature temporarily disconnects house loads during engine cranking, helping protect sensitive electronics from voltage fluctuations. An under-voltage lockout prevents the relay from closing when system voltage is too low, with a 9.5V lockout threshold for 12V systems.

Dual-color status LEDs provide at-a-glance indication of fault, charging, discharging, combine, start isolation, and override conditions. The relay is rated for 120A continuous operation and 140A intermittent operation, with support for cable sizes up to 4/0 AWG. Its IP67 protection rating helps guard against water and dust intrusion, while ignition protection makes it suitable for gasoline-powered boats. The black relay is supplied with a base and is designed for dependable automatic battery control in demanding environments.

Specifications
Continuous rating: 120A; intermittent rating: 140A; alternator support: up to 120A; system voltage: 12V; maximum voltage: 48VDC; under-voltage lockout: 9.5V for 12V systems; cable support: up to 4/0 AWG; protection: IP67 and ignition protected; color: black with base.

Features:

• Automatic battery management connects battery banks during charging and isolates them when voltage drops.
• Start isolation temporarily disconnects house loads during engine cranking to help protect sensitive electronics.
• Under-voltage lockout prevents closing when a 12V battery system falls below 9.5V.
• Dual-color status LEDs indicate fault, charging, discharging, combine, start isolation, and override modes.
• 120A continuous and 140A intermittent current ratings support demanding dual-battery applications.
• Supports alternators up to 120A and cable sizes up to 4/0 AWG.
• IP67 waterproof protection and ignition-safe construction are suitable for gasoline-powered boats.
• Black finish with base for marine and recreational vehicle installations.