Call Us Today 01706 242050
EMAS H100S21 EMAS H 30MM SELECTIVE PUSH BUTTON NO PERMAN.START (0-1)

EMAS H100S21 EMAS H 30MM SELECTIVE PUSH BUTTON NO PERMAN.START (0-1)

Why Choose the EMAS H100S21 EMAS H 30MM SELECTIVE PUSH BUTTON NO PERMAN.START (0-1)?

SKU: H100S21MPN: H100S21
Price
List Price £9.00 ex VAT
Your Price (ex VAT)
£9.00
Manufacturer Lead Time Please contact us for a delivery time before you order
Get the best trade prices Trade exclusive

Create a trade account to unlock exclusive pricing, special offers and more.

Sign up for a trade account Quick & easy setup
SUBTOTAL (EX VAT) £9.00
Trade pricing is personalised to your account

Manufacturer Lead Time

£9.00

EMAS H100S21 30mm Selector Switch 2 Position Spring Return 1NO

EMAS H100S21 30mm Selector Switch 2 Position Spring Return 1NO

The EMAS H100S21 is a 30mm industrial selector switch control unit designed for reliable manual operation in automation systems, electrical panels and industrial machinery. Featuring a 0-I two-position 60° spring return selector mechanism with a 1NO contact configuration, the H100S21 provides dependable momentary switching control for industrial applications.

Why Choose the EMAS H100S21?

  • Industrial-grade 30mm selector switch design
  • Two-position 0-I spring return selector operation
  • 60° switching angle for precise operator control
  • 1 Normally Open (1NO) contact configuration
  • Suitable for industrial automation and machine control panels
  • Reliable construction for demanding industrial environments

Key Features of the EMAS H100S21 30mm Selector Switch

  • Manufacturer: EMAS
  • Model: H100S21
  • Series: H Series Plastic
  • Product Type: Selector Control Unit
  • Selector Type: Spring Return
  • Selector Position: 0-I
  • Switching Angle: 60°
  • Contact Configuration: 1NO (Normally Open)
  • Mounting Diameter: 30mm
  • Rated Operational Current: 4A at 250V AC
  • Utilisation Category: AC-15
  • Mechanical Life: Minimum 500,000 operations
  • Electrical Life: Minimum 100,000 operations
  • Operating Frequency: Mechanical 3000 operations/hour, Electrical 1200 operations/hour
  • Insulation Voltage: 300V
  • Impulse Withstand Voltage: 2.5kV
  • Contact Material: AgNi
  • Protection Rating: IP50
  • Operating Temperature: -15°C to +80°C
  • Cable Section: 1.5-2.5mm²
  • Standards: IEC 60947-5-1, UL 508, VDE 0660

EMAS H100S21 Product Overview

The EMAS H100S21 is part of the H Series Plastic selector control range, designed for industrial applications requiring reliable spring-return switching. Unlike the maintained H100S20 version, the H100S21 automatically returns to its original position after operation, making it suitable for momentary control commands.

With its standard 30mm mounting format, 1NO contact arrangement and durable mechanical design, the H100S21 is ideal for machine control systems, electrical cabinets, automation panels and industrial operator interfaces.

Applications

  • Industrial automation panels
  • Machine operating controls
  • Electrical control cabinets
  • Motor control applications
  • Production line equipment
  • OEM machinery interfaces

Technical Specifications

Tick the specs you need, then view products that match.

Device Type Pushbutton
Product Series Emas H Series
Mounting Diameter 30 mm
Operation 2 positions – maintained
Illumination Illuminated
Contacts 1NO

Frequently Asked Questions

What is the EMAS H100S21?

The EMAS H100S21 is a 30mm selector switch control unit with a 0-I two-position spring return selector mechanism and 1NO contact configuration for industrial applications.

What contact type does the EMAS H100S21 use?

The EMAS H100S21 uses a 1 Normally Open (1NO) contact configuration.

What is the mounting size of the EMAS H100S21?

The EMAS H100S21 is designed for 30mm panel mounting applications.

Is the EMAS H100S21 spring return or maintained?

The EMAS H100S21 is a spring return selector switch. The selector returns automatically after being turned, unlike the maintained H100S20 model.

Where can the EMAS H100S21 be used?

The H100S21 is commonly used in industrial automation systems, machinery control panels, electrical cabinets and operator control stations.

● 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.

 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 

Trusted Manfacturers

● frequently asked questions

Common questions about our products and support

 

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.

What product ranges do you supply

We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products. 

Can you help specify the correct part?

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.

Do you have stock for urgent orders?

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.

What are your delivery times and costs?

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.

What about warranties, returns and faulty items?

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

Discover  our latest insights and
expert advice

From a Simple Idea to Small Business of the Year: The LED Controls Story So Far…

From a Simple Idea to Small Business of the Year: The LED Controls Story So Far…

by | Aug 11, 2026 |

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.

LED Controls: Danfoss Drives Authorised Partner

LED Controls: Danfoss Drives Authorised Partner

by | Jan 17, 2026 |

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...

LED Controls: Your Complete Control Panel Solution

LED Controls: Your Complete Control Panel Solution

by | Jan 17, 2026 |

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...