300 watt Dump Load and Controller. Prevents batteries from overcharging. Designed for small systems. Has status and fault indicator LEDs, 18 gauge powder coated steel enclosure, 3.375" x 3.75" x 18.5", 24 volt, 10 amp Model, uses 3 ohm 300 watt built-in wire wound power resistor. Controller is set for: 29.2 volts Bulk (28.6v sealed), 26.8 volts Float (26.8v sealed) and 32 volts OVP (30v sealed). Current draw is 3mA @ 24 volts when not load dumping. 15 amp breaker recommended.