Designed for dependable source selection, the Lovato GX4051U rotary cam changeover switch delivers 1-pole, 40A performance in a compact GX series format.
SKU:GX4051U
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Designed for dependable source selection, the Lovato GX4051U rotary cam changeover switch delivers 1‑pole, 40A performance in a compact GX series format. This front‑mounted U version features a black handle and a 65X65mm front plate for a clean panel aesthetic. Using the GX square‑shaped contact block, SKU GX4051U provides straightforward changeover operation wherever reliable manual switching is required.
Rated IP65 at the front and tested to withstand 6 kV impulse voltage (Uimp), the GX40 designation ensures robust performance in demanding panels. Operating from -25 to +55 °C (storage -40 to +70 °C), it follows switching diagram 51 for 1‑pole changeover. Conformity includes IEC/EN/BS 60947-1/-3/-5-1 and IEC/EN/BS 61058-1, plus UL60947-4-1 and CSA C22.2 n° 14.
Key Benefits
1-pole, 40A changeover for straightforward source selection.
Front mounting with black handle streamlines panel assembly.
IP65 frontal protection guards against dust and water ingress.
Compliant with IEC/EN/BS, UL, and CSA standards for confidence.
What’s Included
Lovato GX4051U changeover switch, front mounting with black handle
Pre-fitted 65X65mm front plate
Panel mounting hardware
Product documentation link
Applications
Generator-to-mains changeover on single-pole circuits
Industrial control panels and switchboards
OEM machinery and equipment requiring manual source selection
Power distribution and maintenance bypass arrangements
HVAC and building services panels
Technical Specifications
HS Code
85365080
Product type designation
GX40
Rated impulse withstand voltage Uimp
6 kV
Operating temperature
-25 to +55 °C
Storage temperature
-40 to +70 °C
IP degree (frontal)
IP65
Frequently Asked Questions
What is the current rating of the GX4051U?
The IEC conventional free air thermal current Ith is 40 A.
Is the GX4051U suitable for front mounting?
Yes, mounting form U is for front mounting with a black handle and 65X65mm plate.
What is the ingress protection at the front?
The frontal degree of protection is IP65.
Which standards does this switch conform to?
It conforms to IEC/EN/BS 60947-1/-3/-5-1, IEC/EN/BS 61058-1, UL60947-4-1, and CSA C22.2 n° 14.
What are the operating temperature limits?
Operating temperature is -25 to +55 °C; storage is -40 to +70 °C.
Safety note: Install and commission only by qualified personnel in accordance with applicable standards. Isolate all power sources before wiring or maintenance.
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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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...