HG111A6 by Danaher

The HG111A6 is an electromechanical off-delay timer relay manufactured by Danaher and categorized under the Timers and Controllers series. Within automated machinery, this relay maintains the state of its changeover contacts for a preset interval after the control signal is removed, allowing motor starters, solenoid valves, or lighting circuits to follow a controlled shutdown sequence rather than switching simultaneously. By switching loads through its internal DPDT contact set, the device supports reliable cycle management in packaging lines, material conveyors, and process equipment where repeatable delay periods are essential for safe operation.

The timer operates from a control supply of 120 VAC and draws a burden of only 2.5 VA, so heat rise inside compact panels is minimal. Its timing circuit is synchronized to the 60 Hz line frequency, and the dial setting is held to within ±0.5 % of the dial setting, providing consistent delays across wide temperature swings. Output contacts are rated for a 10 A resistive load at 120 VAC and 5 A at 240 VAC; these ratings allow the relay to switch motor starters or heating elements directly without auxiliary interposing relays in many low-horsepower applications.

The relay provides a long operating life that supports preventive maintenance schedules. At the maximum contact load, the relay achieves an electrical life of 250,000 operations; when the current is reduced to 5 A, the rating extends to 1,000,000 operations. The cam and spring mechanism is designed for 10,000,000 operations, so most replacements are driven by contact wear rather than mechanical failure. Reliable function is maintained from -20 °F up to 140 °F, allowing the unit to operate in unconditioned enclosures near furnaces or in refrigerated rooms without auxiliary heaters or coolers.