Product Description:

The HP510A601 is an electromechanical timer manufactured by Danaher for the Timers and Controllers series. It is used to start or interrupt machine operations after a preset interval, allowing repeatable sequencing in conveyors, ovens, or batch-processing equipment. A synchronous motor drives a cam and switch assembly so the device can perform single-shot or repetitive timing tasks without relying on solid-state electronics. This motor-driven arrangement provides a direct mechanical method for controlling equipment that must operate according to an adjustable schedule.

The control circuit is designed for a supply of 120 VAC at 60 Hz. The motor has a burden of 2.45 VA, while the clutch has a burden of 10.5 VA, keeping continuous power demand modest. Upstream protection must accommodate the maximum inrush current of 10 A. The front dial has a minimum setting of 1 hour, and the total selectable range reaches 30 hours. Individual graduations of 0.5 hour allow timing cycles to be adjusted without fine instruments. Repeat accuracy remains within ±9 minutes over the full timing range. The mechanically actuated contacts engage 28 ms after coil energization and release 17 ms after power is removed; these values represent the pull-in and dropout times.

The SPDT output section supports a 10 A resistive load at 120 VAC, making it suitable for many heater banks and pilot solenoids. Following each run, the reset mechanism clears in 0.5 seconds, allowing short-dwell applications to cycle with minimal delay. The assembly operates at ambient temperatures from 0 °F through 140 °F, permitting installation in many unconditioned enclosures. Its molded case protects the internal cam, switch assembly, and gearing during normal panel operation. The timer has a total weight of 2 lb 14 oz, which includes the case, motor, clutch, and mechanical timing components.