As you know, there are several families, and we will explore each of them.

Let’s start with the RE17 series. It stands out for its ultra-compact 17.5 mm format, ideal when space is limited. These single-function models, such as on-delay or star-delta switching, offer a timing range from 0.1 seconds to 100 hours and operate with a universal supply voltage of 24 to 240 V AC/DC.

The RE22 series, slightly wider at 22.5 mm, offers dual-function models, for example on-delay and off-delay. Their timing range extends from 0.05 seconds to 300 hours. They feature a diagnostic button and can be equipped with screw or spring terminals, making them perfect for upgrading or complementing an existing installation.

The Zelio Time range meets more complex needs, with single- or multi-function timers, available in analog or digital versions. Their format varies from 17.5 mm to 45 mm, and their timing range can go from milliseconds to several days, offering high robustness for industrial environments.

Finally, the Harmony NFC version brings major innovation thanks to contactless programming via smartphone. Multi-function and universal, it allows quick and flexible configuration, particularly useful when settings need to be changed regularly. These timers cover all the classic timing functions: on-delay (TON), off-delay (TOFF), cyclic flashing, pulse, or star-delta sequence for motor starting. They are used in a wide variety of applications

Schneider Electric’s plug‑in time delay relays are available in several families, each designed to meet specific needs.

9050 JCK Series – A true benchmark in industrial environments, these relays stand out for their versatility and robustness. Built to withstand demanding conditions, they offer a wide range of timing modes (on‑delay, off‑delay, cyclic, etc.) and extended time ranges, allowing precise adjustment for various applications, from motor control to lighting management.

Harmony REXL (Zelio) Range – Compact and easy to integrate, these models are ideal where space is limited in an electrical cabinet or control panel. Their simple, intuitive design makes them a preferred choice for quick, reliable installations without complex settings, while maintaining accurate timing performance.

Harmony SE / TDR Models – Positioned as an intermediate solution, they combine solid functional flexibility with optimal compatibility for integration into standard modules. Suitable for both industrial and commercial applications, they offer an ideal balance between performance, size, and ease of installation.

Available with extended timing ranges from 0.02 seconds to 300 hours, these relays provide precise control suitable for all applications. They support supply voltages from 24 to 240 V AC/DC, feature 1 or 2 NO/NC contacts depending on the model, and are easily mounted thanks to their standard compact panel format. Screw or spring terminals simplify installation while ensuring a secure connection, and the LED indicator clearly displays the relay’s operating status.

Robust and reliable, these relays operate within a temperature range of –20 °C to +60 °C, delivering stable performance even in demanding industrial environments. Ideal for industrial automation, HVAC system control, safety device management, or conveyor operations, they offer a versatile and durable solution.

By choosing Schneider Electric’s panel‑mounted time delay relays, you are opting for precision, reliability, and ease of integration, while benefiting from the proven quality of Schneider products for your professional applications.