EMAS PSA025OK421S voltmeter measuring cam switch with 25 A rating, four pole four position switching and compact 48 × 48 mm design for industrial measurement applications.
£33.79
The EMAS PSA025OK421S is a compact and reliable voltmeter measuring rotary cam switch designed for phase selection and measurement circuit control in industrial electrical systems. As part of the proven EMAS PSA series cam switch range, it provides dependable switching performance, durable construction and precise operator control for electrical panels, control systems and automation applications.
This cam switch features a four-position measuring selector configuration with a four pole design, allowing operators to select measurement points in three-phase electrical systems. Its compact 48 × 48 mm panel mounting format enables straightforward installation in industrial control cabinets.
With a rated current of 25 A, a 45° switching angle and a compact panel format, the EMAS PSA025OK421S provides reliable manual selection for voltmeter measurement circuits in industrial electrical installations.
Measuring cam switches such as the EMAS PSA025OK421S provide reliable manual selection of electrical measurement circuits by mechanically switching between different contact configurations. This allows operators to safely select measurement points in industrial electrical panels and control systems.
The PSA series is designed for machine builders, panel manufacturers and automation engineers requiring compact switching components with reliable operation and flexible installation options.
| Manufacturer | EMAS |
|---|---|
| Series | PSA Series |
| Model | PSA025OK421S |
| Product type | Rotary cam switch |
| Switch type | Voltmeter measuring selector switch |
| Rated current | 25 A |
| Number of positions | 4 positions |
| Poles | 4-pole |
| Frame size | 48 × 48 mm |
| Operating angle | 45° |
| Insulation voltage (Ui) | 690 V |
| Protection rating | IP54 |
The EMAS PSA025OK421S is a voltmeter measuring cam switch used for selecting measurement circuits in industrial electrical systems.
The PSA025OK421S supports a rated current of 25 A.
The switch provides a four-position selector configuration with a 45° operating angle.
The EMAS PSA025OK421S features a 4-pole switching configuration for measurement applications.
The switch is typically installed in electrical control panels, measurement panels and industrial automation systems.
EMAS PSA series cam switches are widely used in industrial automation and electrical control applications to provide reliable manual switching, durable operation and flexible installation options.
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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...