Victron Energy Cerbo-S GX Basic Version Communication Center, 8-70V DC, 3 VE.Direct Ports, 4 Digital Inputs, No BMS-Can Port

Overview

The Victron Energy BPP900450120 is a Cerbo-S GX communication centre for monitoring and controlling a Victron energy system from one place. It is the basic Cerbo-S GX version, with limited inputs and no BMS-Can port, which makes it a practical fit for less complex marine electrical installations that still need clear system visibility.

This unit accepts 8 to 70V DC power, so it can work with common 12V, 24V, and higher-voltage DC battery systems within that range. It brings together data from connected Victron equipment such as inverter/chargers, solar chargers, battery monitors, and DC-DC chargers, then makes that information available through VRM, Remote Console, a compatible MFD, VictronConnect, or an optional GX Touch display.

For onboard use, the important fit details are its 3 VE.Direct ports, VE.Bus connection, non-isolated VE.Can port, Ethernet, 2.4GHz WiFi, Bluetooth Smart, 4 digital inputs, and 2 programmable relays. The enclosure is IP20 and measures 78 x 154 x 48 mm, so it belongs in a dry, protected electronics space rather than an exposed cockpit, deck, or wet locker.

Key features

• Central monitoring point for Victron power systems, with local and remote access through VRM, Remote Console, VictronConnect, compatible MFD integration, or an optional GX Touch display.
• 8 to 70V DC supply range supports many marine DC battery systems, including 12V and 24V installations.
• 3 isolated VE.Direct ports support up to 15 VE.Direct devices in total when direct and USB-connected devices are counted together.
• Includes a VE.Bus connection for compatible Victron inverter/charger systems and a non-isolated VE.Can port for supported CAN-based integrations.
• 2 USB host ports, 1 USB power-only port, Ethernet, built-in 2.4GHz WiFi, WiFi Access Point mode, and Bluetooth Smart give installers several ways to connect, configure, and expand the system.
• 4 digital inputs and 2 programmable NO/NC relays allow practical control functions such as alarm signalling, generator start and stop, tank pump control, manual relay control, or temperature-based relay use when supported by the installation.
• Basic Cerbo-S GX configuration omits the BMS-Can port, resistive tank level inputs, and temperature sense inputs found on higher-input GX versions.
• IP20 housing and a -20 to +50°C operating temperature range suit protected helm consoles, electrical panels, nav stations, and equipment lockers.

Installation and setup

The Cerbo-S GX mounts on a wall or on 35 mm DIN rail when the proper DIN rail adapter is used. In a boat installation, it should be placed where cable runs to the battery system, inverter/charger, solar equipment, network hardware, and display location stay manageable, while the unit remains protected from spray and washdown water.

Power is supplied through the Power in V+ connector, not through Ethernet or USB. The included DC power cable has an inline 3.15 A slow-blow fuse and M8 terminal eyes for connection to a battery or DC busbar. For reliable monitoring during faults or shutdowns, the unit should be powered from a stable DC source rather than from the AC-out side of an inverter/charger.

Electrical and system integration

This model is suited to boats where the main goal is energy visibility and control rather than extensive tank and temperature monitoring from the GX unit itself. It can collect system data, provide a Remote Console interface, support remote firmware updates, and allow remote configuration changes when the system has internet access.

The relay outputs are potential-free NO/NC contacts. Relay ratings are 6 A up to 30V DC, 1 A up to 70V DC, and 6 A at 125V AC, so connected loads and control circuits need to stay within those limits. Relay 1 is commonly used for alarm, generator start and stop, tank pump, manual operation, or supported helper relay functions, while Relay 2 can be used for manual or supported temperature-based relay functions.

Marine use

This Cerbo-S GX is a good match for cruisers, fishing boats, workboats, and sailboats that already rely on Victron charging and inverter equipment and need a clearer view of battery state, charging sources, AC loads, solar input, and generator activity. It is especially useful where the owner wants remote access at the dock, at anchor, or away from the vessel through VRM.

Because it has no BMS-Can port, it should not be selected for systems that require that dedicated managed-battery connection. For installations that only need the available VE.Direct, VE.Bus, VE.Can, USB, Ethernet, WiFi, digital input, and relay functions, it keeps the system layout cleaner without paying for unused tank, temperature, or BMS-Can hardware.

What’s included

• Cerbo-S GX unit
• Power cable with inline fuse and M8 terminal eyes
• 2 VE.Can terminators
• Terminal blocks for the side connectors

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Orders of $100 or more qualify for free shipping when eligible. For orders under $100, shipping costs are calculated at checkout based on destination, package weight, and selected service. International shipping is available for eligible products, and certain items may require additional handling, warehouse transfers, or may ship directly from the manufacturer, which can affect processing time.

Deliveries are handled by preferred carriers such as USPS, UPS, FedEx, DHL, and others depending on your location and selected service. Estimated delivery times are displayed at checkout and may vary due to customs processing, carrier delays, weather, postal disruptions, or other circumstances beyond our control. Once your order ships, you'll receive a confirmation email with tracking information. Tracking may take up to 24 hours to update on the carrier's website and is also available through your account when applicable.

We ship throughout the United States and to most international destinations for products eligible for international shipping. International orders may be subject to customs duties, taxes, brokerage charges, or other import fees, which are the customer's responsibility and are not included in the product or shipping price. PO Boxes are accepted only when shipping through USPS, and not all packages qualify for this option. If your order does not arrive within the estimated delivery window, please contact us at info@apollolighting.com or +1 (954) 375-0100 so we can assist with locating your package.

Learn more.

Returns may be requested within 30 days of receiving your order. Items must be unused, uninstalled, unaltered, and returned in their original packaging with all tags, packing materials, blank warranty cards, manuals, instructions, accessories, and included items. Certain products, including installed or used electronics, electrical components, lighting, consumables, custom or special-order items, cut-to-length products, safety equipment, and merchandise exposed to water or marine conditions, may not be eligible for return.

To request a return, sign in to your account and select the applicable order and items, and submit your request for review. Eligible unfulfilled items may also be submitted for cancellation within 1 hour of placing the order. Returns or cancellations are not considered approved until you receive confirmation from Apollo Lighting. Please do not ship or drop off merchandise before receiving return approval and instructions.

Customers are responsible for arranging and paying for return shipping unless the return is due to an error by Apollo Lighting or the item is verified as defective, damaged, or incorrect. Missing, damaged, defective, or incorrect items must be reported within 2 business days of delivery, and photos or other documentation may be required for review. If the issue is verified, Apollo Lighting may provide or reimburse return shipping and issue a replacement or refund depending on the circumstances. International customers are responsible for return shipping, duties, taxes, customs charges, brokerage fees, and other costs associated with an international return.

After your return is received and inspected, approved refunds are issued to the original payment method and may take 5-7 business days to appear after processing. Original shipping and handling charges are nonrefundable, and the value of any included free items that are not returned may be deducted from the refund. Apollo Lighting does not charge a standard restocking fee on eligible returns. Returns that are incomplete, damaged, installed, used, altered, improperly packaged, or otherwise do not meet the eligibility requirements may be refused. We recommend using a trackable and appropriately insured shipping service for all customer-arranged returns.

For assistance, contact info@apollolighting.com or call +1 (954) 375-0100.

Learn more.

Many products sold by Apollo Lighting include a manufacturer's warranty covering defects in materials or workmanship. Warranty terms vary by brand, product category, and model, so eligibility, coverage duration, exclusions, and available remedies are determined by the applicable manufacturer. We recommend reviewing the warranty information provided with your product before installation or use, especially for marine electronics, navigation equipment, lighting, electrical systems, pumps, safety equipment, and other specialized marine products.

If you need warranty service, the claim must follow the process established by the manufacturer, authorized service center, or designated warranty provider. You may be asked for proof of purchase, a serial number, product registration, photos, maintenance or installation records, or other documentation. Apollo Lighting does not determine or modify a manufacturer's warranty coverage or final claim decision, but we are happy to help provide purchase information and direct you to the appropriate manufacturer or warranty resource.

Keep your receipt, product documentation, serial number information, and original packaging when practical. Damage caused by normal wear, misuse, improper installation, insufficient maintenance, corrosion, impact, unauthorized modifications, electrical issues, or operation outside the manufacturer's specifications may not be covered. Warranty claims are separate from standard returns, so a product that has been installed, used, or exposed to marine conditions may no longer qualify for return while still remaining eligible for evaluation under the manufacturer's applicable warranty.

Learn more.