ESB20-11N-01 ABB Modular Contactor 20A 2P 1NO+1NC 24V AC/DC Coil 1SBE121111R0111

The ESB20-11N-01 (1SBE121111R0111) is a 20A ABB modular contactor featuring a 2-pole configuration with 1NO+1NC contacts and a 24V AC/DC coil. This modular contactor, also known as a lighting contactor, heating contactor, or installation contactor, is designed for reliable switching and control applications in commercial and industrial installations.

ABB's ESB20-11N-01 modular contactor delivers efficient electrical switching for loads up to 20A, making it ideal for controlling lighting circuits, heating systems, ventilation equipment, and motor applications. The innovative AC/DC coil design eliminates operational hum, ensuring quiet performance in noise-sensitive environments while providing flexible installation options.

Key Features

• Hum-Free AC/DC Coil Technology: The 24V AC/DC coil eliminates buzzing and humming noise, making it perfect for installations in offices, schools, and residential areas where quiet operation is essential
• Compact DIN Rail Design: At just 17.8mm wide, this space-saving modular contactor maximises panel efficiency while the standard DIN rail mounting ensures quick, secure installation
• Dual Contact Configuration: The 1NO+1NC contact arrangement provides versatile switching options, allowing simultaneous control of multiple circuits or interlocking applications
• 20A Current Rating: Handles substantial electrical loads safely, suitable for controlling multiple lighting circuits, heating elements, or small motors up to the rated capacity
• Flexible Cable Compatibility: Accommodates flexible cables up to 6mm², providing installation flexibility for various wiring requirements without additional terminal accessories
• Wide Operating Temperature Range: Functions reliably from -25°C to +55°C, ensuring consistent performance in challenging environmental conditions from cold storage facilities to warm plant rooms
• IP20 Protection Rating: Provides appropriate protection for standard panel installations, preventing accidental contact with live parts while maintaining compact dimensions

Applications

The ESB20-11N-01 modular contactor is widely deployed in building automation systems for switching and controlling lighting circuits, HVAC equipment, heating systems, and ventilation fans. It's particularly suited to commercial buildings, industrial facilities, and residential installations where reliable, quiet operation is required. The contactor also finds application in EV charging stations, pump control systems, and motor starting circuits where the 2-pole configuration and 20A rating meet system requirements.

Standards and Sustainability

This ABB modular contactor carries UKCA, CE, and UL certifications, ensuring compliance with British, European, and North American safety standards. The IP20 rating confirms suitability for standard electrical panel installations with appropriate protection levels.

Manufactured by ABB in Bulgaria, order code ESB20-11N-01 (alternate code 1SBE121111R0111).

Frequently Asked Questions

What cable sizes can I connect to the ESB20-11N-01 modular contactor?

The ESB20-11N-01 accepts flexible cables up to 6mm² maximum size. This accommodates most standard building wiring requirements for 20A applications without requiring additional cable lugs or terminals.

What's the difference between this AC/DC coil and standard AC coil contactors?

The AC/DC coil design eliminates the characteristic humming noise associated with standard AC contactors, making it ideal for noise-sensitive environments. It also provides greater installation flexibility as it operates on both AC and DC 24V control supplies.

How much panel space does this modular contactor require?

The ESB20-11N-01 measures just 17.8mm wide × 85mm high × 64.8mm deep, requiring minimal panel space. It mounts on standard 35mm DIN rail and weighs only 0.14kg, making it perfect for compact control panels.

Can this contactor be used for motor starting applications?

Yes, the 20A rating and 2-pole configuration make it suitable for small motor applications within its current rating. However, ensure the motor starting current and operational requirements are within the contactor's specifications and consider appropriate overload protection.

Where can I buy ESB20-11N-01 ABB Modular Contactor 20A 2P 1NO+1NC 24V AC/DC Coil 1SBE121111R0111 in the UK?

CSE Distributors stocks this ABB modular contactor at their Wooburn Green and Southampton locations. As an official ABB franchised distributor with over 50 years of experience, CSE provides genuine products with full warranty support and has earned hundreds of positive customer reviews for their technical expertise and service.