Allen-Bradley 700-HT22AA2 Industrial Relay Module

The Allen-Bradley 700-HT22AA2 is a general-purpose tube-base timing relay with an adjustable off-delay interval from 0.1 to 10 seconds. It uses a DPDT (two-pole, double-throw) contact arrangement and a 240 V AC coil (50/60 Hz), allowing two independent circuits to be switched in sequence or in parallel. The unit carries up to 10 A per contact, with silver cadmium oxide contacts and plug-in connections on an open-type base (not designed for DIN rail mounting). Power consumption is 4 VA (±10%) at 240 V AC, and it provides an off-delay function that keeps outputs energized for the programmed duration after input removal. Operating temperature is -28 °C, with storage down to -55 °C. Rated control supply voltage at AC 50 Hz/60 Hz is 240 V, and the device uses plug-in connections for easy replacement in compatible equipment. This 700-HT22AA2 is part of Allen-Bradley’s 700-HT family of tube-base timing relays, selected for timing control tasks in legacy control circuits, interlocks, and sequencing where a compact, plug-in DPDT timer is advantageous.