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DBB02CM24 – SPDT DELAY ON RELEASE TIMER
Carlo Gavazzi DBB02CM24 battery-powered true delay-on-release timer relay with a 60-second to 10-hour adjustable range, 24–240 V AC/DC supply and 8 A SPDT output.
£96.95
Why Choose the Carlo Gavazzi DBB02CM24 True Delay-on-Release Timer?
The Carlo Gavazzi DBB02CM24 is a battery-powered true delay-on-release timer relay designed to maintain its changeover output for an extended period after the power supply is removed. As part of the Carlo Gavazzi DBB02 timer series, it provides dependable long-duration timed switching for industrial machinery, automation equipment and electrical control systems.
When power is applied, the relay energises and the built-in rechargeable battery is charged. Removing the supply starts the selected timing period, during which the output remains energised before releasing at the end of the delay. This battery-powered operation allows release delays of up to 10 h without requiring a continuous external supply.
With three selectable timing ranges covering 60 s to 10 h, a wide 24–240 V AC/DC supply and an 8 A SPDT relay output, the DBB02CM24 is ideal for extended shutdown and run-on applications. Its 22.5 mm DIN-rail housing enables straightforward installation inside industrial control panels.
Key Advantages
- Battery-powered true delay-on-release operation.
- Extended adjustable timing range from 60 s to 10 h.
- Versatile 24–240 V AC/DC multi-voltage supply.
- High-capacity 8 A SPDT changeover relay output.
- Three timing ranges selectable using internal DIP switches.
- Automatic timing start when the power supply is removed.
Key Features
- Carlo Gavazzi DBB02 true delay-on-release timer series.
- Three selectable ranges covering 60 s to 10 h.
- Built-in rechargeable 4.8 V DC NiCd battery for timing operation.
- 24–240 V AC/DC combined supply range.
- SPDT relay output rated at 8 A at 250 V AC for resistive loads.
- Timing repeatability of ≤ 0.2%.
- Knob-adjustable delay setting with DIP-switch range selection.
- Green LED indication for power-supply status.
Extended Delayed Release Using Stored Battery Power
A battery-powered true delay-on-release timer keeps its relay energised for a preset period after supply power is removed. Its internal rechargeable battery supports substantially longer delay periods than a conventional capacitor-powered timer, making it suitable for extended run-on and shutdown sequences.
The DBB02CM24 begins timing automatically following supply interruption and releases its changeover contact when the selected period expires. If power returns before the relay releases, the timing cycle resets and the relay remains energised while the internal battery resumes charging.
Typical Applications
- Extended machinery shutdown sequences.
- Fan, blower and pump run-on control.
- Industrial automation and process equipment.
- Motor control centres and electrical panels.
- HVAC and ventilation systems.
- Lighting, alarms and backup control sequences.
Technical Specifications
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| Supply Voltage | 110–127 V AC/DC, 208–250 V AC/DC, 24 V AC, 24 V DC, 48–72 V AC/DC | |
|---|---|---|
| Mounting Type | DIN rail | |
| Timing Function | Off-delay | |
| Timing Range | 1 min – 10 h | |
| Device Type | Single-function timer | |
| Coil / Supply Voltage | 110 V AC, 110 V DC, 115 V AC, 120 V AC, 125 V DC, 208 V AC, 220 V AC, 220 V DC, 230 V AC, 24 V AC, 24 V DC, 240 V AC, 48 V AC, 48 V DC, 60 V DC, 72 V DC | |
| IP Rating | IP20 | |
| Manufacturer | Carlo Gavazzi | |
| Series | DBB02 | |
| Model | DBB02CM24 | |
| Product type | True delay-on-release timer relay | |
| Timing method | Battery powered | |
| Timing range | 60 s to 10 h | |
| Selectable ranges | 60–600 s, 0.1–1 h and 1–10 h | |
| Range selection | DIP switches | |
| Time adjustment | Front-mounted rotary knob | |
| Repeatability | ≤ 0.2% | |
| Supply voltage | 24–240 V AC/DC +10%/-15% | |
| Supply frequency | 45–65 Hz | |
| Rated power consumption | 3.7 VA AC or 1.3 W DC | |
| Built-in battery | 4.8 V DC, 80 mAh NiCd | |
| Minimum supply pulse | 200 ms | |
| Output configuration | 1 SPDT changeover relay | |
| Resistive contact rating | 8 A at 250 V AC or 5 A at 24 V DC | |
| Inductive contact rating | 2.5 A at 250 V AC or 2.5 A at 24 V DC | |
| Protection rating | IP20 | |
| Mounting type | DIN-rail mounting | |
| Connection type | Screw terminals | |
| Operating temperature | 0 to 60 °C | |
| Dimensions (W × H × D) | 22.5 × 80 × 99.5 mm | |
| Weight | approx. 130 g | |
| Approvals | UL, CSA and CE marked |
Frequently Asked Questions
What is the Carlo Gavazzi DBB02CM24 used for?
This timer keeps its changeover output energised for an adjustable period after the power supply is removed, making it suitable for extended shutdown and run-on applications.
What makes the DBB02CM24 a true delay-on-release timer?
The timer uses its built-in rechargeable battery to maintain the relay output and complete the selected delay period after external supply power has been removed.
What timing range does the DBB02CM24 provide?
The timer provides three selectable ranges covering adjustable delays from 60 s to 10 h.
What supply voltage does the timer require?
The DBB02CM24 operates from a wide 24–240 V AC/DC supply.
What type of output does the DBB02CM24 have?
It has one SPDT changeover relay output rated for resistive loads up to 8 A at 250 V AC.
Trusted Industrial Timing from Carlo Gavazzi
Carlo Gavazzi timer relays are widely used by control-panel builders, machine manufacturers and automation engineers for reliable timed switching in industrial equipment and building automation systems.
