DBB51 multi voltage true delay on release timer is a timer product produced by Omron company of Germany. It can accept 24-240V AC and 24VDC power supplies. The product can be set to 1-600 seconds delay and has a 5A SPDT relay output. It can be mounted on DIN-rail.
The DBB51 is a true delay on release timer designed for DIN‑rail mounting. It offers a selectable time range from 1 to 600 seconds, knob‑adjustable setting, and a 5 A SPDT relay output with LED status indicators. The unit operates from both 24 VDC and 24‑240 VAC supplies and meets IEC and EN safety standards.
Key specifications include mechanical life over 30 million operations, IP20 protection, operating temperature from –20 °C to 60 °C, and compact housing dimensions of 17.5 × 81 × 67.2 mm. The datasheet provides wiring and operation diagrams, as well as detailed electrical ratings.
| Time range | 1 to 600 s |
|---|---|
| Relay output | 5 A SPDT |
| Power supply voltage | 24 VDC and 24‑240 VAC |
| Rated operational power (AC) | 1.5 VA |
| Rated operational power (DC) | 0.06 W |
| Mechanical life | > 30 × 10⁶ operations |
| Voltage interruption | < 40 ms |
| Housing dimensions | 17.5 × 81 × 67.2 mm |
| Weight | 70 g |
| Operating temperature | -20 to 60 °C |
The DBB51 can be set for a delay from 1 to 600 seconds.
It provides a 5 A SPDT relay output.
The timer resets and the relay remains ON.
The unit accepts 24 VDC (±15 %) and 24‑240 VAC (±10‑15 %) at 45‑65 Hz.