EMAS B101SL31K Illuminated Selector Switch 2NO (II-0-I) Red Single Spring Return 22mm
The EMAS B101SL31K is a high-performance illuminated selector switch designed for industrial control panels, automation systems, and machine control applications. Featuring a 2NO contact configuration, red illumination, and a single spring return mechanism, this 22mm EMAS B Series control unit provides reliable switching and clear operator indication.
Designed with a three-position II-0-I selector arrangement, the B101SL31K delivers dependable momentary control operation for industrial environments where accurate switching and fast operator response are required.
Why Choose the EMAS B101SL31K Selector Switch?
Industrial-grade reliability: Built for automation and electrical control applications.
Red illuminated selector: Provides clear visual indication during operation.
Single spring return design: Allows controlled momentary selector operation.
2NO contact configuration: Suitable for a wide range of switching requirements.
22mm mounting diameter: Compatible with standard industrial panel cut-outs.
Long service life: Mechanical life rated at a minimum of 500,000 operations.
Key Features of EMAS B101SL31K
Manufacturer: EMAS
Product Series: B Series Plastic
Product Code: B101SL31K
Product Type: Illuminated selector control unit
Selector Type: Single spring return
Positions: II-0-I (60°)
Contact Configuration: 2NO
Colour: Red
Mounting Diameter: 22mm
Rated Current (Ie): 4A at 250V AC
Usage Category: AC-15
Mechanical Life: Minimum 500,000 operations
Electrical Life: Minimum 100,000 operations
Protection Rating: IP50
Operating Temperature: -15°C to +80°C
Standards: IEC 60947-5-1, TS EN 60947-5-1, UL 508, VDE 0660
Applications
The EMAS B101SL31K illuminated selector switch is suitable for:
Industrial automation systems
Machine control panels
Motor control equipment
Factory production machinery
Operator interface stations
Electrical control cabinets
Technical Specifications
Specification Details Brand
EMAS
Model
B101SL31K
Type
Illuminated Selector Switch
Operation
Single Spring Return
Contacts
2NO
Selector Positions
II-0-I, 60°
Colour
Red
Mounting Size
22mm
Rated Voltage
250V AC
Rated Current
4A
Insulation Voltage
300V
Protection
IP50
Frequently Asked Questions
What is the EMAS B101SL31K used for?
The EMAS B101SL31K is used in industrial control panels, automation systems, and machinery applications requiring illuminated selector switching.
What type of selector mechanism does the B101SL31K use?
The B101SL31K features a single spring return selector mechanism with II-0-I three-position operation.
How many contacts does the EMAS B101SL31K have?
The selector switch includes two normally open contacts (2NO).
What mounting size is required for installation?
The EMAS B101SL31K is designed for standard 22mm panel mounting applications.
Specification Details Brand
EMAS
Model
B101SL31K
Type
Illuminated Selector Switch
Operation
Single Spring Return
Contacts
2NO
Selector Positions
II-0-I, 60°
Colour
Red
Mounting Size
22mm
Rated Voltage
250V AC
Rated Current
4A
Insulation Voltage
300V
Protection
IP50
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.
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Stock lines ready to ship
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Same day dispatches
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Customers supported
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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...