What makes the H3Y-4 model different from the H3Y-2 series timers?
The main difference between the H3Y-4 and the H3Y-2 series timers lies in the number of output contacts and their control capability. Both belong to the same family of compact, plug-in type solid-state timers, but they serve slightly different control applications. The H3Y-2 model is a 2-pole timer with DPDT (Double Pole Double Throw) contacts, while the H3Y-4 model is a 4-pole timer with 4PDT (Four Pole Double Throw) contacts. This means the H3Y-4 can control more circuits simultaneously, making it suitable for applications that require multiple output connections or more complex timing sequences.
The Omron H3Y-4-B DC48 5M Timer offers a wider control range and greater versatility compared to the H3Y-2. It provides precise time delay control with selectable time ranges up to 5 minutes and operates on a 48V DC power supply. The additional output poles in the H3Y-4 make it ideal for multi-channel relay control, sequential start-up systems, or machinery requiring synchronized timing operations. Its plug-in design, mechanical indicator, and high repeat accuracy ensure reliable performance in industrial automation and panel control systems.