The Armstrong R40403-003 blower control replaces all 40403-001, 40403-002 and ST9120A, B or C blower controls. The R40403-003 blower control provides outputs for a 2 speed indoor blower motor and single speed inducer motor. The control receives inputs from the thermostat (W, Y, and G), pressure switch, and high temperature limit switches. The control also provides user selectable blower delays through dip switch settings. The 24 volt circuit of this control is protected by a 5 amp replaceable automotive type fuse.

• Specifications: Replaces: R40403-001, R40403-002, 20054502 Operating Line Voltage: 85 to 135 VAC, 50/60Hz Secondary Control Voltage: 18.0 to 30.0 VAC
• 50/60Hz Maximum Blower Loading: 15FLA, 30LRA @ 120 VAC; 7.5FLA, 15LRA @ 240 VAC Maximum Inducer Loading: 3FLA, 10LRA @ 120 VAC; 1.5FLA, 5LRA @ 240 VAC
• Humidifier Terminal: .8A @ 115 VAC Electronic Air Cleaner: .8A @ 115 VAC

Specifications: Replaces: R40403-001, R40403-002, 20054502 Operating Line Voltage: 85 to 135 VAC, 50/60Hz Secondary Control Voltage: 18.0 to 30.0 VACHoneywell