EMAS B100T20 Selector Switch 1NO (0-I) 90° Stay Put 22mm Control Unit
The EMAS B100T20 is a B Series plastic selector switch control unit designed for reliable industrial
automation, machinery control panels, and electrical switching applications. Featuring a 1NO contact configuration,
0-I selector positions, and a 90° stay-put maintained mechanism, this 22mm selector switch
provides dependable operator control for industrial systems.
Manufactured by EMAS, the B100T20 uses durable non-flammable V0 PA6.6 contact blocks and is designed to meet industrial
standards including IEC 60947-5-1, TS EN 60947-5-1, UL 508, and VDE 0660. It offers reliable switching performance with
a 4A rating at 250V AC, AC-15 utilisation category, IP50 protection, and long mechanical and electrical life.
Product Features
Brand: EMAS
Model: B100T20
Product Type: Selector Switch Control Unit
Series: B Series Plastic
Contact Configuration: 1NO (1 Normally Open)
Selector Positions: 0-I
Switching Angle: 90°
Operation: Stay Put / Maintained
Mounting Diameter: 22mm
Protection Rating: IP50
Rated Current: 4A at 250V AC
Mechanical Life: Minimum 500,000 operations
Electrical Life: Minimum 100,000 operations
Applications
The EMAS B100T20 selector switch is suitable for industrial control panels, automation equipment, electrical cabinets,
machinery interfaces, and applications requiring a maintained two-position selector control.
Why Choose EMAS B100T20?
Reliable maintained selector operation
Standard 22mm panel mounting design
90° switching angle for clear operator selection
Long mechanical and electrical service life
Durable flame-resistant contact block construction
Suitable for industrial automation and machine control systems
Technical Specifications
Specification Details Manufacturer
EMAS
Part Number
B100T20
Product Series
B Series Plastic
Switch Type
Selector Switch
Selector Type
Stay Put
Selector Position
0-I
Switching Angle
90°
Contact Configuration
1NO
Contact Material
AgNi
Rated Current
4A at 250V AC
Usage Category
AC-15
Insulation Voltage
300V
Impulse Withstand Voltage
2.5kV
Operating Temperature
-15°C to +80°C
Protection Degree
IP50
Mounting Size
Ø22.4 ±0.2mm
Cable Section
1.5-2.5mm²
Short Circuit Breaking Capacity
Ics 1kA
Standards
IEC 60947-5-1, TS EN 60947-5-1, UL 508, VDE 0660
Frequently Asked Questions
What is the EMAS B100T20?
The EMAS B100T20 is a 22mm B Series plastic selector switch control unit with a 1NO contact configuration and
0-I maintained selector operation at a 90° switching angle.
Is the EMAS B100T20 a maintained selector switch?
Yes. The B100T20 uses a stay-put mechanism, allowing the selected position to remain fixed until manually changed.
What are the selector positions of the EMAS B100T20?
The EMAS B100T20 provides two selector positions: 0 and I.
What mounting size does the EMAS B100T20 require?
The EMAS B100T20 is designed for standard 22mm control panel mounting.
Specification Details Manufacturer
EMAS
Part Number
B100T20
Product Series
B Series Plastic
Switch Type
Selector Switch
Selector Type
Stay Put
Selector Position
0-I
Switching Angle
90°
Contact Configuration
1NO
Contact Material
AgNi
Rated Current
4A at 250V AC
Usage Category
AC-15
Insulation Voltage
300V
Impulse Withstand Voltage
2.5kV
Operating Temperature
-15°C to +80°C
Protection Degree
IP50
Mounting Size
Ø22.4 ±0.2mm
Cable Section
1.5-2.5mm²
Short Circuit Breaking Capacity
Ics 1kA
Standards
IEC 60947-5-1, TS EN 60947-5-1, UL 508, VDE 0660
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
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.
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...