The SEA-3N and the SEA-6N can be used as manual, semiautomatic or automatic step control for single phase fans. Without a thermostat, the SEA transformers can be used as manual 5-step controllers. In case of semi-automatic control recommended thermostats are the T15-2 or T15-WD. In case of automatic control recommended thermostats are the T15-4 or ETD-S. For the SEA-3N the maximum output current is 3 Amps. For the SEA-6N the maximum output current is 6 Amps. • Robust, insensitive for short time power peaks and overloads • Applicable for both new and existing ventilation systems Features: • Manual control in 5 steps • Semi-automatic 5 speed control (in 3 steps in combination with a T15-2 or in 2 steps with a T15-WD thermostat) • Automatic speed control in 5 steps for single phase fans (in combination with a T15-4 or ETD-S thermostat) • Built-in over temperature protection Control diagram automatic / manual Step Step transformer control

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