EMAS CP101AA21 is a spring-return 22 mm key-operated industrial control switch with two normally open contacts, 0–I positions, key removal at 0 and IP65 protection.
£25.48
The EMAS CP101AA21 is a robust 22 mm key-operated control switch designed for controlled operation of industrial machinery, electrical panels and automation systems. Part of the EMAS CP Series, it combines two normally open contacts with a spring-return mechanism and key-controlled access.
This control switch has two positions marked 0–I and a 60° switching angle. Turning the key from 0 to I operates the contacts, while the spring-return mechanism automatically returns the switch to the 0 position when released. The key can be removed in the 0 position, helping restrict equipment operation to authorised personnel.
With an AC-15 operational current rating of 4 A at 230 V AC, an IP65 protection rating and a standard 22 mm mounting diameter, the CP101AA21 is suitable for machine control panels, operator stations and industrial control enclosures.
Spring-return key switches provide momentary, access-controlled operation of industrial equipment. The operator must hold the key in the active position to keep the normally open contacts closed, and releasing the key allows the mechanism to return automatically to its normal 0 position.
The EMAS CP101AA21 is suitable for control functions where a maintained command is not required. Its two normally open contacts can operate two control circuits together, while key removal at 0 helps ensure that equipment cannot be activated without access to the key.
| Manufacturer | EMAS |
|---|---|
| Series | CP Series Plastic |
| Model | CP101AA21 |
| Product type | Key-operated control switch |
| Switch positions | 0–I |
| Switching angle | 60° |
| Operating mechanism | Spring return |
| Key removal position | 0 position |
| Contact configuration | 2NO |
| Operational current | 4 A at 230 V AC |
| Utilisation category | AC-15 |
| Rated insulation voltage (Ui) | 300 V |
| Rated impulse withstand voltage (Uimp) | 2.5 kV |
| Dielectric strength, body to contact | 2,500 V AC |
| Dielectric strength, contact to contact | 1,500 V AC |
| Insulation resistance | Minimum 10 MΩ at 500 V DC |
| Mechanical life | Minimum 500,000 operations |
| Electrical life | Minimum 100,000 operations |
| Maximum operating frequency | 3,000 mechanical operations per hour / 1,200 electrical operations per hour |
| Operating temperature | −15 to +65 °C |
| Pollution degree | 3 |
| Protection rating | IP65 |
| Contact material | AgNi |
| Cable connection capacity | 1.5–2.5 mm² |
| Terminal tightening torque | 1.5 Nm |
| Conditional short-circuit current | 1 kA |
| Mounting diameter | 22 mm |
| Standards | TS EN 60947-5-1, IEC 60947-5-1, UL 508 and VDE 0660 |
The CP101AA21 provides momentary, key-controlled switching for industrial machinery, electrical panels and automation equipment where operation must be restricted to authorised personnel.
No. The switch has a spring-return mechanism that automatically returns it from I to the 0 position when the key is released.
The switch is fitted with two normally open contacts, identified as a 2NO contact configuration.
The CP101AA21 has an AC-15 operational current rating of 4 A at 230 V AC.
The switch is designed for installation in a standard 22 mm panel mounting hole.
EMAS CP Series control units provide dependable switching, standardised panel mounting and robust protection for industrial machinery, automation equipment and electrical control applications.
● Service Agreements
Credit Accounts
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.
● frequently asked questions
At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.
We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
● latest blog
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...