The EMAS PSA120AK241E is a robust and reliable rotary cam switch designed for high-current industrial switching, isolation and control applications. As part of the proven EMAS PSA series, this 120 A safety On-Off cam switch provides dependable manual control for electrical panels, machinery and industrial automation systems.
This cam switch features a compact industrial design with a 2-phase configuration, a 0-1 On-Off switching function and a 90° safety switching mechanism. The PSA series is engineered for high precision, long service life and reliable operation in demanding industrial environments.
With a rated current of 120 A and an 85 × 85 mm mounting frame, the EMAS PSA120AK241E is suitable for industrial control panels, machinery isolation and electrical switching systems requiring dependable high-current manual switching performance.
Key Advantages
High-current rotary cam switch designed for industrial applications.
120 A current rating suitable for demanding electrical switching requirements.
2-phase On-Off switching configuration for reliable circuit control.
90° safety switching operation for controlled isolation.
Durable construction designed for long operational life.
Suitable for electrical panels, machinery and automation systems.
Key Features
EMAS PSA series rotary cam switch.
120 A rated current.
2-phase configuration.
On-Off switching function (0-1).
90° operating angle.
85 × 85 mm frame size.
IP54 protection rating for industrial environments.
Safety type design for reliable switching and isolation applications.
Reliable Switching for Industrial Control Systems
Rotary cam switches such as the EMAS PSA120AK241E provide a dependable method for manually controlling and isolating electrical circuits. Their mechanical switching design delivers reliable operation where durability, accuracy and straightforward control are essential.
The PSA series combines robust construction with reliable electrical performance, making it suitable for integration into industrial machinery, automation panels and electrical distribution systems requiring dependable On-Off switching and safety isolation.
Typical Applications
Industrial electrical control panels.
Machine isolation and maintenance switching.
High-current electrical control systems.
Automation and production machinery.
Industrial distribution systems.
OEM electrical assemblies.
Technical Specifications
Manufacturer
EMAS
Series
PSA Series
Model
PSA120AK241E
Product type
Rotary cam switch
Switch function
On-Off (0-1)
Rated current (Ie)
120 A
Poles / Phase
2-phase
Operating angle
90°
Frame size
85 × 85 mm
Usage category
AC21A
Insulation voltage
690 V
Impulse withstand voltage
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
Short circuit breaking capacity
6 kA
Frequently Asked Questions
What is the EMAS PSA120AK241E used for?
The EMAS PSA120AK241E is a rotary cam switch used for high-current industrial On-Off switching, isolation and electrical control applications.
What is the current rating of this cam switch?
The PSA120AK241E has a rated current of 120 A.
What type of switching configuration does this product have?
The switch uses a 2-phase On-Off (0-1) switching configuration with a 90° operating angle.
What protection rating does the EMAS PSA120AK241E provide?
The switch provides an IP54 protection rating suitable for industrial environments.
Where is this cam switch typically installed?
The switch is typically installed in electrical control panels, machinery and industrial automation systems.
Trusted by Industrial Engineers Worldwide
EMAS PSA series cam switches are widely used in industrial control applications where reliable manual switching, compact installation and long service life are required.
Manufacturer
EMAS
Series
PSA Series
Model
PSA120AK241E
Product type
Rotary cam switch
Switch function
On-Off (0-1)
Rated current (Ie)
120 A
Poles / Phase
2-phase
Operating angle
90°
Frame size
85 × 85 mm
Usage category
AC21A
Insulation voltage
690 V
Impulse withstand voltage
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
Short circuit breaking capacity
6 kA
No documents available for this product.
Delivery
We offer fast UK delivery on all stocked items. Orders placed before 3pm Monday to Friday are eligible for next-day delivery.
Standard delivery: 2–3 working days
Next-day delivery: available on in-stock items when ordered before 3pm
Express options available — contact us for details
Returns
If you need to return an item, please contact our sales team within 30 days of receipt. Items must be returned unused in their original packaging.
Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.
Priority sourcing and supply support
Flexible payment terms for qualifying organisations
Support for engineering, maintenance, and operations
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Stock lines ready to ship
1,000 +
Same day dispatches
3500 +
Customers supported
28
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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...