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The TAC4 is a bypass timer that provides a closure across the low pressure switch during compressor startup. Its time delay circuit is totally solid state including the normally closed output. The molded housing with encapsulation, the single hole mounting, and 0.25 in. (6.35 mm) termination makes the TAC4 easy to use, rugged, and reliable.

Upon application of input voltage and closure of controller contact, CC, the load, CR, energizes and the time delay begins. During the time delay, the TAC4's solid state output bypasses the LPC, low pressure switch. This allows the compressor controlled by CR to start and establish acceptable pressure. At the end of the time delay, TAC4's output de-energizes and remains de-energized until reset. The TAC4 may be used in other applications where a controlling contact must be bypassed for a specified period of time.

Reset: Removing input voltage or opening CC resets the output and time delay.

• UL Approved for Air Conditioning & Refrigeration Equipment
• Delays from 0.05 ... 300 s
• 24, 120, or 230 V AC
• Redundant Circuitry
• Eliminates Chatter Problems