Check the listing for details. Therm-O-Disc 15/17 KW Heat Sequencer 24V - Replaces R24CB4007 15SH41-309509. Condition: New. Listed at 18.00 USD. Therm-O-Disc 15/17 KW Heat Sequencer 24V - Replaces R24CB4007 15SH41-309509 Product Description: This is a brand new Therm-O-Disc 15/17 KW Heat Sequencer, designed for use in electric furnaces. It is engineered to stage the heating elements one at a time, preventing any drain on the electrical system. This sequencer operates with a 24-volt coil and can manage up to three heating elements, making it a reliable replacement for part numbers R24CB4007 and 15SH41-309509. Key Features:Brand: Therm-O-DiscPower Rating: 15/17 KWVoltage: 24VReplacement Part Numbers: R24CB4007, 15SH41-309509Application: Electric Furnace Heat SequencerFunction: Stages heating elements to prevent electrical overloadCompatibility: Suitable for various HVAC systems