Swift Kompany 9821-8330 Dual XD NMEA 2000 ACR/ACR Switch with Knobs, 8-Pin DT

The Swift Kompany 9821-8330 is a dual-circuit XD NMEA 2000 switch, also called a dual battery relay or automatic charging relay (ACR) module. It is built for marine and heavy-duty electrical systems. Two switches share one compact, sealed housing, so you don't need two separate high-amp relays. The 9821-8330 part number is listed as the ACR/ACR version with manual override knobs and an 8-position DT connector.

Key Features:

• NMEA 2000 integration: Switch status and battery voltage can be controlled and monitored over the NMEA 2000 network.
• High current capacity: Rated for 500A continuous current per switch, and designed for engine cranking loads.
• Manual override knobs: The knobs show the state of the manual override, including whether a switch is locked on or locked off.
• Programmable by DIP switch: Each switch function can be configured by installers and OEMs.
• Sealed construction: IP67 / IP6K9K ingress protection, high-temperature electronics, and stainless-steel cable lug studs.
• Mounting: Large mounting holes accept 1/4-20 or M6 hardware.
• Wide voltage range: Auto-ranging 8-36 VDC input for 12V and 24V systems.
• Expandable: Link and cross-link busbars connect it to additional dual, triple, or single XD relays in 2- or 3-battery systems.

This XD series switch saves mounting space and weight compared with separate relays. It also lowers off-state current draw and gives clear diagnostic feedback through the NMEA 2000 network and on-board LEDs.