HP59A6 Danaher
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The Danaher HP59A6 is part of the Timers and Controllers series and operates at 120V, 60 Hz with a maximum output rating of 10 Amps at 120 VAC. It features a dial circumference of 7.85 inches with 10 minute divisions and allows for timer settings from 20 minutes to 10 hours. The unit has a clutch burden of 10.5 VA, a motor burden of 2.45 VA, and an electrical life of 250,000 operations at full load.
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Product Description:
The HP59A6 is a mechanical interval timer produced by Danaher within the Timers and Controllers series. Designed for panel mounting in process equipment, it drives an internal clutch and synchronous motor to index a front dial and switch heavy-duty contacts at user-selected intervals. In automation systems, the device establishes start, dwell, or purge periods for motors, heaters, or pumps without relying on electronic logic, providing predictable timing that is independent of ambient temperature or vibration.
It operates from a supply of 120 V at 60 Hz, and the output contacts are rated to carry 10 A at 120 VAC, so lighting circuits, solenoids, or motor starters can be switched directly. The timing motor consumes 2.45 VA, while the clutch requires 10.5 VA only during set-to-run engagement, resulting in modest heat generation inside control cabinets. A 7.85-inch dial marked in 10-minute increments allows quick visual adjustment. The scale can be set anywhere up to 10 hours, and the cam permits a minimum repeatable interval of 20 minutes. Cycle-to-cycle deviation is held within ±3 minutes, making the unit suitable for batch processes where moderate precision is sufficient.
After a timing cycle, the mechanism relatches in 0.5 seconds, so a new sequence can start almost immediately. Coil energization reaches full pull-in within 28 milliseconds, and release occurs in only 17 milliseconds, which limits contact arcing at the beginning and end of each run. The timer has 15 screw terminals that provide isolated changeover contacts plus separate motor and clutch connections for versatile wiring. Mechanical endurance is rated for 250,000 operations at full electrical load. The large dial circumference and 10-minute divisions make settings legible, while the modest motor and clutch power requirements help keep transformer sizing small.
