EMAS PSA020KS135S rotary cam switch, a 20 A single-pole five-step 0-5 switching device designed for industrial electrical control applications.
£33.79
The EMAS PSA020KS135S is a compact and reliable rotary cam switch designed for industrial electrical control and multi-position switching applications. Part of the EMAS PSA Series cam switch range, it provides dependable manual step switching for control panels, machinery and automation systems.
This cam switch features a five-step switching function (0-5) with a single-pole configuration and a 60° operating angle. Its compact 48 × 48 mm panel mounting format allows straightforward installation while providing reliable switching performance in demanding industrial environments.
With a rated current of 20 A and an AC21A utilisation category, the PSA020KS135S is suitable for applications requiring dependable manual step control, long service life and compact industrial switching solutions.
Rotary cam switches such as the EMAS PSA020KS135S provide a simple and reliable method of manually controlling electrical circuits through multiple predefined positions. The cam-operated mechanism enables accurate switching while maintaining dependable electrical performance in industrial equipment.
The PSA Series is designed for machine builders, panel manufacturers and automation engineers requiring compact switching devices with reliable operation, long mechanical life and straightforward installation.
| Manufacturer | EMAS |
|---|---|
| Series | PSA Series |
| Model | PSA020KS135S |
| Product type | Rotary cam switch |
| Switch type | Step switch |
| Switch position | 0-5 |
| Poles | 1 pole |
| Rated current (Ie) | 20 A |
| Operating angle | 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 PSA020KS135S is a rotary cam switch used for manual multi-position switching and control of electrical circuits in industrial applications.
The PSA020KS135S has a rated current of 20 A.
The switch provides a five-step 0-5 switching function with a single-pole configuration.
The PSA020KS135S has an IP54 protection rating, making it suitable for industrial environments.
The switch is typically installed in electrical control panels, machinery and industrial automation systems.
EMAS PSA Series cam switches are widely used in industrial automation and electrical 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...