For 1244-6661 Motor Speed Controller Forklift Curtis 1244 series 1311 1313 1314 32842067Features: Curtis Model: 1244 6661 Norminal Battery Voltage (Volts): 72V (default setting), 84V, 60V or 48V Amature Current Limit (amps): 600 Amature 1 Minute Current Rating (amps): 600 Amature 1 Hour Current Rating (amps): 140 Field 2 Minute Current Rating (amps): 50 Net Weight: 3. 9 kg Specifications: PWM operating frequency: 16 kHz Electrical isolation to heatsink (min.): 500 VAC KSI input current (no contactors engaged): 160 mA without programmer;