... ,400W Compact design Low noise Dynamic Compact Semiconductor Fan Heater, Industrial Electric Air Heater, CSL 028, 150W,250W,400WCompact designLow noiseDynamic heating ... 028: 45m³/h (230VAC), 54m³/h (120VAC) service life 40,000h at 40°C (104°F)Connection2-pole clamp max. 2.5mm ... for 35 mm DIN rail, EN 60715 or screw fixing (Ø 5.3mm)Fitting positionvertical airflow (air outlet up)Operating / Storage ...