Why Choose the EMAS B100AA21 EMAS B KEY OPERATED BUTTON 1NO (0-1) SPRING RETURN?
£15.17
The EMAS B100AA21 is a B Series Plastic key operated selector switch designed for industrial control panels, automation systems, and electrical switching applications. Featuring a 1NO contact configuration, 0-I switching positions, 60° rotary operation, and a spring return mechanism, this compact control unit provides secure and reliable operator control for machinery and industrial equipment.
Manufactured by EMAS, the B100AA21 provides durable plastic construction suitable for professional industrial environments. Designed for standard 22mm panel mounting, it features key removal at the 0 position and is suitable for automation and electrical control applications requiring controlled access operation and momentary switching.
The EMAS B100AA21 key operated selector switch is commonly used in:
The EMAS B100AA21 provides secure key-controlled operation, reliable switching performance, and robust industrial construction in a compact 22mm panel-mounted format. Its spring return mechanism, 1NO contact configuration, and key removal at the zero position make it an ideal solution for controlled machine operation and industrial automation applications.
| Specification Value Product Code | B100AA21 |
|---|---|
| Manufacturer | EMAS |
| Series | B Series Plastic |
| Product Type | Key Operated Control Unit |
| Contact Type | 1NO |
| Operating Position | 0-I |
| Switching Angle | 60° |
| Operating Mechanism | Spring Return |
| Key Removal | At 0 Position |
| Mounting Size | 22mm |
| Rated Current | 4A (250V AC) |
| Usage Category | AC-15 |
| Mechanical Life | 500,000 operations minimum |
| Electrical Life | 100,000 operations minimum |
| Insulation Voltage | 300V |
| Impulse Withstand Voltage | 2.5kV |
| Protection Degree | IP50 |
| Operating Temperature | -15°C to +80°C |
The EMAS B100AA21 is a 22mm key operated selector switch with a 1NO contact configuration, 0-I positions, 60° operation, and spring return function for industrial control applications.
The EMAS B100AA21 features a single normally open (1NO) contact configuration.
The EMAS B100AA21 is designed for standard 22mm panel mounting applications.
The key can be removed in the 0 position, providing controlled access and preventing unauthorised switching.
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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...