The IMO CS20A-ST51 is a durable industrial rotary cam switch designed for reliable manual switching and control applications in electrical panels, machinery and industrial automation systems. As part of the IMO CS20A rotary cam switch series, it provides dependable circuit selection and position control for machine builders, panel manufacturers and industrial engineers.
This cam switch combines robust construction with straightforward rotary operation, making it suitable for industrial environments where reliable switching performance and clear operator indication are required. The CS20A series uses a compact panel mounting format with legend plate identification for practical machine control applications.
With a 20 A rated current, 1-pole configuration and 5-position step switching operation, the CS20A-ST51 is ideal for machinery control panels, automation equipment and electrical control systems requiring multi-position manual selection.
Key Advantages
Reliable rotary cam switch designed for industrial control applications.
20 A rated current suitable for industrial electrical switching systems.
1-pole, 5-position step operation for flexible circuit selection.
Supplied with legend plate for clear operator indication.
Compact panel mounting design for control cabinets.
Suitable for machinery, automation panels and OEM applications.
Key Features
IMO CS20A rotary cam switch series.
20 A rated switching current.
1-pole switching configuration.
5-position step selector operation.
Legend plate included for position identification.
Non-illuminated rotary switching design.
22.5 mm central fixing panel mounting format.
Designed for industrial control and automation systems.
Reliable Switching for Industrial Control Systems
Cam switches such as the IMO CS20A-ST51 provide operators with a simple and effective method of controlling electrical circuits through rotary position selection. They are widely used where manual switching, equipment selection and operating mode control are required.
The CS20A series is designed for control engineers, panel builders and machine manufacturers requiring compact and reliable switching components. Its robust design, clear position indication and flexible configuration options support dependable operation in industrial automation environments.
Typical Applications
Industrial control panels and switchgear assemblies.
Machine operating mode selection.
Automation equipment and machinery.
Electrical control circuits.
OEM machine building applications.
Industrial distribution and control systems.
Technical Specifications
HS Code
8536508000
Country of Manufacture
Austria
Manufacturer
IMO
Series
CS20A Rotary Cam Switches
Model
CS20A-ST51
Product type
Rotary cam switch
Rated current
20 A
Number of poles
1-pole
Number of positions
5-position
Operation type
Step rotary switching
Legend plate
Included
Rated operational voltage
690 V AC
Mounting type
22.5 mm panel mounting
Protection rating
IP20
Frequently Asked Questions
What is the IMO CS20A-ST51 used for?
The IMO CS20A-ST51 is a rotary cam switch used for manual circuit selection and control applications in industrial machinery and electrical panels.
What current rating does this cam switch support?
The CS20A-ST51 has a rated current of 20 A.
How many positions does the switch have?
The IMO CS20A-ST51 features a 5-position step switching arrangement.
How many poles does the CS20A-ST51 have?
The CS20A-ST51 is a 1-pole rotary cam switch.
Where is this cam switch typically installed?
The switch is typically installed in electrical control panels, machinery cabinets and industrial automation systems.
Trusted by Industrial Control Engineers
IMO CS20A rotary cam switches are widely used by panel builders and automation engineers to provide reliable manual switching, clear operator control and dependable performance in industrial equipment.
HS Code
8536508000
Country of Manufacture
Austria
Manufacturer
IMO
Series
CS20A Rotary Cam Switches
Model
CS20A-ST51
Product type
Rotary cam switch
Rated current
20 A
Number of poles
1-pole
Number of positions
5-position
Operation type
Step rotary switching
Legend plate
Included
Rated operational voltage
690 V AC
Mounting type
22.5 mm panel mounting
Protection rating
IP20
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
500 +
Stock lines ready to ship
1,000 +
Same day dispatches
3500 +
Customers supported
28
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● frequently asked questions
Common questions about our products and support
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We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.
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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...