EMAS PSA020MS182S motor start cam switch, a 20 A single-phase 1-0-2 spring return rotary switch designed for industrial motor control applications.
£21.77
The EMAS PSA020MS182S is a compact and reliable motor start rotary cam switch designed for industrial electrical motor control applications. Part of the EMAS PSA Series cam switch range, it provides dependable manual motor starting and control operation for machinery, electrical panels and automation systems.
This motor start cam switch features a single-phase configuration with a 1-0-2 switching function, spring return operation and a 30°-60° operating angle. Its compact 48 × 48 mm panel mounting design enables straightforward installation while providing reliable switching performance in industrial environments.
With a rated current of 20 A and an AC21A utilisation category, the PSA020MS182S is suitable for motor starting applications requiring momentary manual control, dependable operation and long service life.
Motor start cam switches such as the EMAS PSA020MS182S provide a practical solution for manually initiating motor operation. The spring return mechanism allows controlled momentary switching while preventing unintended continuous operation.
The PSA Series is designed for machine builders, panel manufacturers and automation engineers requiring compact motor control devices with reliable switching performance and long operational life.
| Manufacturer | EMAS |
|---|---|
| Series | PSA Series |
| Model | PSA020MS182S |
| Product type | Rotary cam switch |
| Application | Motor Start |
| Switch type | Motor Start |
| Switch position | 1-0-2 |
| Pole / phase configuration | 1 Phase |
| Rated current (Ie) | 20 A |
| Operating angle | 30°-60° |
| Frame size | 48 × 48 mm |
| Utilisation category | AC21A |
| Insulation voltage (Ui) | 690 V |
| Impulse withstand voltage (Uimp) | 4 kV |
| Protection rating | IP54 |
| Contact material | AgNi |
| Mechanical life | Minimum 100,000 operations |
| Electrical life | Minimum 50,000 operations |
| Operating temperature | -25 to +80 °C |
| Pollution degree | 3 |
| Cable section | 1–2.5 mm² |
| Short circuit breaking capacity (Ics) | 6 kA |
| Mounting type | Panel mounting |
The EMAS PSA020MS182S is a motor start rotary cam switch designed for manual starting and control of single-phase motor circuits.
The PSA020MS182S has a rated current of 20 A.
The switch provides a 1-0-2 motor start switching function with spring return operation.
The PSA020MS182S has an IP54 protection rating, making it suitable for industrial environments.
The switch is typically installed in electrical control panels, machinery and industrial motor control systems.
EMAS PSA Series cam switches are widely used in industrial automation and motor control applications where reliable manual switching, compact design and long service life are essential.
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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...