The nVent HOFFMAN LI503 is a robust double bit 3 mm lock insert designed for use with compatible electrical enclosure locking systems. As part of the nVent HOFFMAN enclosure accessory range, it provides a dependable locking solution for securing industrial cabinets, control panels and electrical enclosures.
This lock insert enables reliable access control for enclosure doors, helping protect sensitive electrical components while allowing authorised personnel convenient access during installation and maintenance. Its compact construction supports straightforward integration into compatible enclosure locking mechanisms.
With a height of 16 mm and a depth of 20 mm, the nVent HOFFMAN LI503 provides a practical double bit 3 mm locking interface for industrial enclosure applications requiring secure and reliable cabinet access.
Key Advantages
Reliable double bit lock insert for industrial electrical enclosures.
3 mm double bit locking profile for compatible enclosure hardware.
Compact dimensions for efficient installation in enclosure doors.
Supports secure access management for electrical equipment.
Suitable for control cabinets, automation panels and industrial enclosures.
Designed for use with the trusted nVent HOFFMAN enclosure accessory range.
Key Features
nVent HOFFMAN LI503 lock insert.
Double bit 3 mm insert type.
Height: 16 mm.
Depth: 20 mm.
Designed for compatible enclosure locking systems.
Provides secure operation of electrical cabinet doors.
Suitable for industrial control and automation installations.
Reliable Locking Accessories for Industrial Enclosures
Industrial enclosure locking accessories help protect electrical components by providing controlled access to cabinets and control systems. The nVent HOFFMAN LI503 offers a dependable lock insert solution for enclosure doors where secure operation is required.
Designed for industrial panel building applications, this lock insert supports efficient enclosure configuration and helps engineers create safe, organised and reliable electrical installations.
Typical Applications
Industrial electrical enclosures.
Automation control cabinets.
Machine control panels.
Electrical distribution cabinets.
OEM equipment enclosures.
Industrial maintenance access systems.
Technical Specifications
Country of Manufacture
Sweden
Manufacturer
nVent HOFFMAN
Model
LI503
Product type
Lock insert
Lock type
Double bit
Insert size
3 mm
Height
16 mm
Depth
20 mm
Application
Electrical enclosure locking systems
Frequently Asked Questions
What is the nVent HOFFMAN LI503 used for?
The LI503 is a lock insert designed for compatible electrical enclosure locking systems to provide secure cabinet access.
What type of lock insert is the LI503?
The nVent HOFFMAN LI503 is a double bit 3 mm lock insert designed for enclosure locking applications.
What are the dimensions of the LI503?
The lock insert has a height of 16 mm and a depth of 20 mm.
Where is the LI503 installed?
The LI503 is installed in compatible industrial enclosure locking mechanisms used for electrical cabinets and control panels.
Who uses nVent HOFFMAN locking accessories?
nVent HOFFMAN locking accessories are used by panel builders, automation engineers and industrial manufacturers for secure enclosure solutions.
Trusted by Industrial Panel Builders Worldwide
nVent HOFFMAN enclosure accessories provide reliable solutions for secure electrical installations, helping engineers build safe, organised and efficient industrial control systems.
Country of Manufacture
Sweden
Manufacturer
nVent HOFFMAN
Model
LI503
Product type
Lock insert
Lock type
Double bit
Insert size
3 mm
Height
16 mm
Depth
20 mm
Application
Electrical enclosure locking systems
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.
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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...