Carlo Gavazzi PAC01CM40 star-delta timer relay with a 0.1 s to 600 s selectable timing range, 380–415 V AC supply and 8 A SPDT relay output for industrial three-phase motor starting control.
£93.23
The Carlo Gavazzi PAC01CM40 is a reliable star-delta timer relay designed for controlled starting of three-phase motors in industrial machinery and automation systems. As part of the Carlo Gavazzi PAC01 timer series, it automatically controls the transition between star and delta motor connections, helping reduce starting current and electrical stress during motor acceleration.
The PAC01CM40 provides selectable timing ranges covering 0.1 s to 600 s, allowing the star operating period to be matched to the starting requirements of the connected motor. A short transition interval between star and delta operation helps ensure controlled contactor sequencing before the motor changes to its normal delta running configuration.
Designed specifically for 380–415 V AC supply systems, the PAC01CM40 features an 8 A SPDT relay output and a compact 36 × 80 × 94 mm Euronorm housing. Its 11-pin plug-in socket mounting format enables straightforward installation and replacement within industrial motor control panels.
Star-delta starting is commonly used to reduce the initial current drawn by suitable three-phase induction motors. During starting, the motor windings are connected in star configuration. After the selected starting period, the timer disconnects the star circuit and subsequently enables the delta circuit so the motor can continue operating normally.
The Carlo Gavazzi PAC01CM40 automates this sequence and provides a defined transition interval between the two switching states. Its adjustable timing, 380–415 V AC supply and plug-in construction make it particularly suitable for conventional contactor-based motor starters in industrial control panels.
| Manufacturer | Carlo Gavazzi |
|---|---|
| Series | PAC01 |
| Model | PAC01CM40 |
| Product type | Star-delta timer relay |
| Function | Star-delta motor starting control |
| Timing range | 0.1 s to 600 s |
| Star-to-delta transition interval | 50–130 ms |
| Supply voltage | 380–415 V AC |
| Output type | Relay |
| Contact configuration | 1 × SPDT with neutral centre position |
| Output rating | 8 A |
| Mounting type | Plug-in socket |
| Socket type | 11-pin |
| Housing type | Euronorm |
| Dimensions (W × H × D) | 36 × 80 × 94 mm |
| Certifications | CE, UL, CSA |
The PAC01CM40 is a star-delta timer relay used to control the starting sequence of suitable three-phase motors, automatically managing the transition from star to delta operation.
The PAC01CM40 provides selectable timing ranges covering 0.1 s to 600 s, allowing the motor's star starting period to be adjusted for the application.
The Carlo Gavazzi PAC01CM40 is designed for a 380–415 V AC supply.
The PAC01CM40 provides a single 8 A SPDT relay output with neutral centre position for controlling the star-delta switching sequence.
The PAC01CM40 uses an 11-pin plug-in socket mounting format and has a compact 36 × 80 × 94 mm Euronorm housing.
Carlo Gavazzi PAC01 star-delta timer relays provide machine builders and control engineers with dependable motor starting control, adjustable transition timing and straightforward integration into industrial electrical panels.
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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...