Carlo Gavazzi DAC01CM40 is a 22.5 mm DIN-rail star-delta timer relay with a selectable 0.1 s to 10 min timing range, 380–415 V AC supply and an 8 A SPDT output.
£84.75
The Carlo Gavazzi DAC01CM40 is a compact and dependable star-delta timer relay designed to control the starting sequence of three-phase induction motors. As part of the established Carlo Gavazzi DAC01 timer series, it provides adjustable timing and automatic transfer between the star and delta stages of a motor starter.
This timer offers selectable timing ranges from 0.1 s to 10 min, allowing the star operating period to be matched to the motor and driven load. After the selected time expires, the relay changes state to support transfer from the star contactor to the delta contactor.
With a dedicated 380–415 V AC supply, an 8 A SPDT relay output and a slim 22.5 mm DIN-rail housing, the DAC01CM40 is suitable for motor-control centres, pumps, fans, compressors and industrial machinery using high-voltage AC starter-control circuits.
Star-delta starting reduces the current drawn by a three-phase induction motor during acceleration. The motor initially starts with its windings connected in star, reducing the voltage applied to each winding, before the timer initiates transfer to the delta connection for normal operation.
The Carlo Gavazzi DAC01CM40 controls this sequence automatically according to the selected delay. Correct coordination with suitably rated contactors and electrical interlocking helps prevent the star and delta contactors from being energised simultaneously.
| Manufacturer | Carlo Gavazzi |
|---|---|
| Series | DAC01 |
| Model | DAC01CM40 |
| Product type | Star-delta timer relay |
| Timing function | Star-delta control |
| Timing range | 0.1 s to 10 min |
| Selectable ranges | 0.1–1 s / 1–10 s / 6–60 s / 1–10 min |
| Supply voltage | 380–415 V AC |
| AC supply frequency | 45–65 Hz |
| Power consumption | 4 VA |
| Output type | SPDT electromechanical relay |
| Contact configuration | 1 changeover contact |
| AC1 contact rating | 8 A at 250 V AC |
| AC15 contact rating | 2.5 A at 250 V AC |
| DC12 contact rating | 5 A at 24 V DC |
| DC13 contact rating | 2.5 A at 24 V DC |
| Time-setting accuracy | ≤5% |
| Connection type | Screw terminals |
| Mounting type | Industrial DIN-rail mounting |
| Housing width | 22.5 mm |
| Dimensions (W × H × D) | 22.5 × 80 × 99.5 mm |
The DAC01CM40 controls the timed transition between the star and delta stages of a reduced-current three-phase motor starter.
The timer offers selectable ranges covering star-stage delays from 0.1 s to 10 min.
The DAC01CM40 is designed for a 380–415 V AC supply.
The timer provides an 8 A SPDT electromechanical relay output with one changeover contact.
The timer is mounted on a DIN rail inside a motor-control panel and connected to the starter control circuit using its screw terminals.
Carlo Gavazzi timer relays are used by panel builders, automation engineers and equipment manufacturers to provide dependable timing, sequencing and motor-control functions in industrial systems.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...