Overview

The Victron Energy SCC125110412 is a SmartSolar MPPT 250/100-Tr VE.Can solar charge controller for 12 V, 24 V, and 48 V battery banks, with 36 V selection available manually. It delivers up to 100 A charging current and accepts high-voltage solar arrays with a 250 V absolute PV open-circuit limit under cold conditions.

On a boat, this unit fits larger house-bank solar systems where changing light is part of daily use. The MPPT tracking helps the controller keep harvesting when clouds pass, sails or other moving objects shade the panels, and the VE.Can connection lets multiple controllers work together in a larger Victron system.

Key features

• 100 A rated charge current for larger marine solar charging systems.
• Supports 12 V, 24 V, and 48 V battery banks with automatic voltage selection; 36 V systems can be set manually.
• Nominal PV power ratings of 1450 W at 12 V, 2900 W at 24 V, and 5800 W at 48 V.
• 250 V absolute maximum PV open-circuit voltage under cold conditions, with 245 V maximum for start-up and operation.
• Tr terminal version with 35 mm² / AWG 2 PV and battery terminals for hard-wired array and battery connections.
• VE.Can, VE.Direct, and built-in Bluetooth connections for setup, monitoring, and system integration.
• Parallel operation through VE.Can for synchronized charging across multiple controllers on larger installations.
• IP43-rated electronics with an IP22 connection area, suited to protected indoor marine electrical spaces.
• Protection against PV reverse polarity, output short circuit, and over-temperature conditions.
• Safety standards include EN/IEC 62109-1, UL 1741, and CSA C22.2.

Electrical and system integration

This controller fits Victron electrical systems where solar charging needs to be visible and coordinated from the central monitoring setup. VE.Can can daisy chain multiple MPPT controllers to a GX device, while VE.Direct and Bluetooth give local access for commissioning, charging profiles, and live performance checks.

Charge settings can be matched to common battery types such as lithium, AGM, gel, and flooded lead-acid. The unit uses a multi-stage adaptive charge algorithm with default absorption, float, and equalization set points that can be adjusted through the supported setup methods.

Installation and fit

The Tr version is the hard-wired terminal model, with 35 mm² / AWG 2 PV and battery terminals. It measures 216 x 295 x 103 mm and weighs 4.5 kg, so it belongs on a solid vertical panel or bulkhead with service access for cable bends, torque checks, and ventilation.

The enclosure rating makes it a protected-space component rather than a deck-mounted accessory. Install it in a dry electrical locker, machinery space, or electronics area away from direct spray and standing water, with disconnects and over-current protection selected for the vessel installation.

Use cases on board

This controller is a good match for cruising yachts, trawlers, workboats, and fishing vessels carrying larger solar arrays and house battery banks. It is especially useful where panel output changes during the day because of clouds, sail shade, or the boat’s angle to the sun.

Maintenance and care

Keep the connection area dry, secure cables so vibration does not load the terminals, and leave space around the housing for heat to dissipate. Periodic checks of terminal tightness, cable condition, and controller status are worthwhile in saltwater installations, especially after seasonal haul-out or major battery work.