The Lovato BFX42 is a compact and reliable mechanical interlock accessory designed for use with compatible Lovato BF series contactors. It prevents two contactors from being energised simultaneously, providing a safe and dependable solution for electrical interlocking applications in industrial motor control systems.
Designed for use with BF09–BF38 contactors, the BFX42 provides a simple mechanical solution for creating interlocked contactor assemblies. It is commonly used in applications such as reversing motor starters, changeover systems and other control arrangements where two contactors must not operate at the same time.
The BFX42 improves the safety and reliability of industrial control panels by providing positive mechanical separation between linked contactors. Its compact design allows straightforward integration into Lovato BF contactor assemblies without requiring additional control wiring.
Key Advantages
Provides mechanical interlocking between compatible contactors.
Prevents simultaneous operation of two contactors.
Designed for Lovato BF09–BF38 series contactors.
Ideal for reversing and changeover contactor assemblies.
Improves operational safety in industrial control systems.
Simple installation as a dedicated contactor accessory.
Reliable Contactor Interlocking for Industrial Systems
Mechanical interlocks are used in contactor assemblies where two switching devices must never close at the same time. They provide a physical barrier that prevents incorrect simultaneous operation, helping protect equipment and improve system reliability.
The Lovato BFX42 provides a dedicated interlocking solution for BF series contactors, making it suitable for motor reversing circuits, transfer applications and other industrial control systems requiring coordinated contactor operation.
Typical Applications
Forward and reverse motor starters.
Electrical changeover systems.
Industrial motor control panels.
Automation and machine control systems.
Power switching assemblies.
Industrial electrical distribution equipment.
Technical Specifications
HS Code
85365080
Manufacturer
Lovato Electric
Series
BFX
Model
BFX42
Product type
Mechanical interlock
Application
Contactor interlocking
Compatible contactors
BF09–BF38 series
Mounting type
Between contactors
Accessory function
Mechanical prevention of simultaneous contactor operation
Frequently Asked Questions
What is the Lovato BFX42 used for?
The BFX42 is a mechanical interlock accessory used to prevent two compatible Lovato BF series contactors from operating simultaneously.
Which contactors are compatible with the Lovato BFX42?
The BFX42 is designed for use with Lovato BF09–BF38 series contactors.
Does the BFX42 require electrical wiring?
No. The BFX42 provides mechanical interlocking between contactors and does not require an electrical connection.
Where is the Lovato BFX42 typically used?
The BFX42 is typically used in reversing motor starters, changeover systems and industrial automation panels.
Why use a mechanical interlock?
A mechanical interlock provides physical prevention of simultaneous contactor operation, helping improve safety and reliability in control systems.
Trusted Industrial Control Accessories
Lovato BFX accessories provide reliable solutions for configuring contactor assemblies, improving safety, flexibility and performance in industrial electrical control systems.
HS Code
85365080
Manufacturer
Lovato Electric
Series
BFX
Model
BFX42
Product type
Mechanical interlock
Application
Contactor interlocking
Compatible contactors
BF09–BF38 series
Mounting type
Between contactors
Accessory function
Mechanical prevention of simultaneous contactor operation
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.
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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...