HP52A6 Danaher
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The Danaher HP52A6 is part of the Timers and Controllers series and operates at a line voltage of 120 VAC with a frequency of 60 Hz. It features a max time setting of 15 seconds, a minimum setting of 0.5 seconds, and a dial division of 0.25 second increments. The timer supports an output rating of 10 Amps resistive at 120 VAC and has an electrical life of 250,000 operations.
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Product Description:
The HP52A6 is an electromechanical timing device built by Danaher within its Timers and Controllers series. Intended for panel-mounted sequencing or dwell control, the unit counts down a preset interval and then changes state, allowing conveyors, heaters, or index tables to run for controlled durations in automated equipment. Its round front dial requires a 3.187-inch panel cutout and has a calibrated circumference of 7.85 inches, allowing the time to be set without tools.
The timer operates on a supply of 120 VAC at the industry-standard frequency of 60 Hz, so it can be wired directly to common control transformers. The knob can be adjusted from a minimum of 0.5 seconds to a maximum of 15 seconds; this range establishes the allowable delay before the internal changeover contacts transfer. Each index mark on the dial represents a 0.25-second division. The clutch and motor burdens of 10.5 VA and 2.45 VA, respectively, indicate the power drawn while the mechanism is winding. Once energized, repeat cycles remain within ±0.08 seconds, providing consistent process timing. When the cycle is complete, the SPDT output can switch a resistive load of up to 10 A at 120 VAC, enabling direct actuation of solenoids, relays, or pilot lights.
The mechanical design provides an electrical service life of 250,000 operations under the rated load. A 0.5-second reset time returns the cam to zero before the next command. Ambient operating temperatures range from 0 °F to 140 °F, making the unit suitable for refrigerated packaging lines and warmer machine enclosures. The mechanism includes a 10.5 VA clutch that decouples the motor during idle periods. A 2.45 VA synchronous drive maintains speed despite line variations. The timer has 15 rear screw terminals that provide independent connections for power, the timing motor, the clutch, and the output contacts, simplifying wiring in dense control panels.
