KBN4L12 – KEY OP. ANGLED ‘T’ 1NA+2NC SLOW BREAK

Q: What is the Lovato KBN4L12 used for?

The Lovato KBN4L12 is used as a key-operated safety limit switch for machine guards, protective doors and industrial safety interlock applications.

Q: What contact arrangement does the KBN4L12 have?

The KBN4L12 features one normally open and two normally closed slow-action contacts.

Q: What type of actuator does the KBN4L12 use?

The KBN4L12 uses an angled "T" key actuator designed for key-operated safety switching.

Q: What cable entry does the KBN4L12 use?

The KBN4L12 uses a bottom M20 cable entry connection for industrial electrical installations.

Lovato Electric KBN4L12 electrical installation component for professional commercial and industrial assemblies, suitable for maintenance, replacement and panel building applications.

SKU: KBN4L12MPN: KBN4L12

List Price £86.11 ex VAT

Your Price (ex VAT)

£86.11

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.

Quantity:

SUBTOTAL (EX VAT) £86.11

Trade pricing is personalised to your account

Manufacturer Lead Time

£86.11

Lovato KBN4L12 Angled T Key Plastic Safety Switch 1NO+2NC

The Lovato Electric KBN4L12 is a professional key-operated safety limit switch from the K series, designed for dependable machine safety, industrial automation and protective guarding applications. Featuring an angled "T" key actuator, polymer thermoplastic housing and 1NO+2NC slow-action contacts, the KBN4L12 provides reliable switching performance for safety interlock circuits, machine guards and industrial control systems.

Designed to EN 50047 dimensional standards, the KBN4L12 features a bottom M20 cable entry, forced opening capability and self-releasing screw terminal connections. Its compact plastic body construction provides a reliable solution for monitoring machine doors, access points and protective guards in industrial environments.

Why Choose the Lovato Electric KBN4L12?

Genuine Lovato Electric component: Designed for reliable industrial safety and automation applications.
Key-operated safety design: Suitable for machine doors, guards and access point monitoring.
1NO+2NC slow-action contacts: Provides flexible switching for safety and control circuits.
Angled "T" key actuator: Designed for secure mechanical operation in safety interlock applications.
Durable thermoplastic housing: Provides dependable performance in industrial environments.

Product Specifications

Manufacturer	Lovato Electric
Product Code	KBN4L12
Product Type	Safety Limit Switch
Series	KBN
Actuator Type	Angled "T" Key
Contact Configuration	1NO + 2NC Slow Action
Housing Material	Polymer Thermoplastic
Cable Entry	M20 Bottom Entry
Cable Connection	Self-releasing screw terminal
Thermal Current Ith	10A
Rated Insulation Voltage Ui	690V
Rated Impulse Withstand Voltage Uimp	6kV
IEC/EN 60947-5-1 Designation	A600 Q600
Insulation Class	Class II
Mechanical Life	100,000 cycles
Forced Opening	Yes
Operating Temperature	-25°C to +70°C
Protection Rating	IP65
Dimensions	30 x 30 x 93mm
Weight	94g
EAN	8013975115381

Applications

Machine guard safety monitoring
Industrial automation equipment
Safety interlock circuits
Manufacturing machinery protection
Industrial control panels

Technical Specifications

Weight [g]	96
Qty. per package	1
Multiple qty. of packs per order	1
Package dimensions [mm]	100X044X032
Volume [cm³]	140.8
Bar code [EAN13]	8013975115381
Product designation	Key operated
Product type designation	KBN
Housing Material	Polymer thermoplastic
Key shape	Angled "T"
Type of contact	1NO+2NC Slow action
Thermal current Ith	10
IEC/EN 60947-5-1 designation	A600 Q600
Rated insulation voltage Ui [V]	690
Rated impulse withstand voltage Uimp	6
Insulation class	II
Short-circuit protection with fuse	10 gG/SC QUICK FUSE
min	16
max	14
IEC Conventional free air thermal current Ith	10
Resistance per pole (average value)	<10
Mechanical life	100000
B10d	100000
Mechanical operation	3600
Operating head fixing	Locking bayonet insert
min [mm²]	1.5
max [mm²]	2.5
Cable connection	Self-releasing screw terminal
Cable entry	M20 on the bottom
Pollution degree	3
min [°C]	-40
max [°C]	+70
ETIM 8.0	EC000030 - End switch
HS Code	85365080
Housing Material	Plastic
Connection	M20 cable entry

Frequently Asked Questions

What is the Lovato KBN4L12 used for?

The Lovato KBN4L12 is used as a key-operated safety limit switch for machine guards, protective doors and industrial safety interlock applications.

What contact arrangement does the KBN4L12 have?

The KBN4L12 features one normally open and two normally closed slow-action contacts.

What type of actuator does the KBN4L12 use?

The KBN4L12 uses an angled "T" key actuator designed for key-operated safety switching.

What cable entry does the KBN4L12 use?

The KBN4L12 uses a bottom M20 cable entry connection for industrial electrical installations.

Weight [g]	96
Qty. per package	1
Multiple qty. of packs per order	1
Package dimensions [mm]	100X044X032
Volume [cm³]	140.8
Bar code [EAN13]	8013975115381
Product designation	Key operated
Product type designation	KBN
Housing Material	Polymer thermoplastic
Key shape	Angled "T"
Type of contact	1NO+2NC Slow action
Thermal current Ith	10
IEC/EN 60947-5-1 designation	A600 Q600
Rated insulation voltage Ui [V]	690
Rated impulse withstand voltage Uimp	6
Insulation class	II
Short-circuit protection with fuse	10 gG/SC QUICK FUSE
min	16
max	14
IEC Conventional free air thermal current Ith	10
Resistance per pole (average value)	<10
Mechanical life	100000
B10d	100000
Mechanical operation	3600
Operating head fixing	Locking bayonet insert
min [mm²]	1.5
max [mm²]	2.5
Cable connection	Self-releasing screw terminal
Cable entry	M20 on the bottom
Pollution degree	3
min [°C]	-40
max [°C]	+70
ETIM 8.0	EC000030 - End switch
HS Code	85365080
Housing Material	Plastic
Connection	M20 cable entry

UK delivery

Delivery options

Free UK delivery on orders over £200 ex VAT. Order in-stock items before 2pm Monday to Friday for next-day delivery.

This product Lead time on request

Please contact us for a delivery time before you order

Standard delivery

£8 ex VAT · free over £200

UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.

Heavier items may be charged at a weight-based or pallet rate, shown at checkout.

Collect from our showroom

Mon–Fri, 8am–5pm

Order and pay online, then collect from our showroom.

Please allow 15–30 minutes after ordering for us to prepare your order.

Northern Ireland, ROI & export

Priced at checkout

We deliver to Northern Ireland, the Republic of Ireland and overseas.

Delivery is calculated at checkout based on your destination.

Orders with mixed availability

Shipped complete

If part of your order is on a lead time, we hold it and send everything together.

Need the in-stock items sooner? Ask us and we can split the delivery.

Business customer returns

Returns & order support

Need to return an item? Find the guidance for your order below, then contact our team before sending anything back.

Stocked items

Request within 30 days

Changed your mind or ordered the wrong item? Request a return within 30 days of receipt. There is no restocking charge.

Items must be unused, in resalable condition and in their original packaging, and returns need our approval first. Return carriage is at your cost, and the original delivery charge is not refunded.

Faulty or damaged items

Tell us as soon as possible

Faulty, damaged on delivery or the wrong product supplied? Contact our team as soon as possible with the details.

We will review the issue and arrange an appropriate resolution under our terms and conditions and your statutory rights.

Made-to-order items

Manufacturer approval needed

Manufactured, configured and special-order products can only be returned with the manufacturer’s approval. Any handling charge is agreed with you when you request the return.

This does not affect claims for faulty goods or items that do not meet the agreed specification.

LED Controls showroom with electrical products on display

Let’s get your return sorted.

Send your order number, product details and reason for return. For faults or delivery damage, include photographs if available. We will confirm the next steps.

Email returns team 01706 242050

The 30-day return request period applies to change-of-mind returns for stocked items. It does not limit your statutory rights for faulty or non-conforming goods.

● 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?

What are your delivery times and costs?

What about warranties, returns and faulty items?

● 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…

by admin | Aug 11, 2026 | News

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

by admin | Jan 17, 2026 | Product Spotlight

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