SPECIFICATIONS Model Number: Part Number: BD48B7 19030638A December 18, 2002 Mechanical Drawing: Motor: Nominal Voltage Operating Voltage Range Nominal Running Current Locked Rotor Current Running Power Average Speed Bearings Air Flow Noise Additional Features: = 48 vdc = 24 - 56 vdc = 0.250 amps = 0.500 amps = 12 watts = 2950 rpm = Sleeve = 25 cfm = 51.2 dBA Construction: Venturi: Plastic, Black, UL 94V-0 Propeller: Plastic, Black, UL 94V-0 Agency Approvals: UL, CE Life Expectancy: This fan is designed for continuous duty life of 78,000 hours at 40C. Brushless DC Motor Polarity Protected Locked Rotor Protection Automatic Restart Capability Operating Temperature: Storage Temperature: -10C to 70C -40C to 85C Tachometer: Output: 5 volt TTL Compatible 5 mA Typical Pulses per Revolution: 2 Isolated: No I c: Termination: 12" Lead wires, AWG 22, UL 1061 Red: = Power (+) Black: = Return (-) Blue / White: = Tachometer (Output)