SKU GX1666O48 is Lovato’s GX series rotary cam voltmeter switch for phase‑neutral and phase‑phase voltages. Part of our voltmeters and ammeters range, it provides a 16 A conventional free air thermal current (Ith) and installs on 35 mm DIN rail via the O48 modular service cover with black handle. A compact 45 x 54 mm front plate ensures tidy panel integration and clear operator control.
Engineered for dependable service, the GX16 designation features the GX square‑shaped contact block and IP65 frontal protection. It withstands 6 kV impulse voltage (Uimp) and operates from −25 to +55 °C, with storage down to −40 °C and up to +70 °C. Designed to IEC/EN/BS 60947 and IEC/EN/BS 61058-1, plus UL and CSA references, it suits demanding industrial panels.
Key Benefits
Voltmeter switch for phase‑neutral and phase‑phase voltage selection.
16 A Ith rating for reliable industrial measurement switching.
O48 modular service cover for 35 mm DIN rail mounting.
IP65 frontal protection for demanding operating environments.
6 kV impulse withstand voltage enhances insulation robustness.
Operates from −25 to +55 °C ambient temperature.
GX series, square‑shaped contact block for compact panels.
What’s Included
Lovato GX1666O48 voltmeter switch (GX series)
O48 modular service cover with black handle (integral)
Installation leaflet
Downloadable datasheet
Applications
Phase‑neutral and phase‑phase voltmeter selection in control panels
Switchboards and electrical distribution panels
Motor control centres and machinery panels
Generator, UPS, and standby power monitoring
HVAC and building services plant rooms
Technical Specifications
HS Code
85365080
Product type designation
GX16
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 does switching diagram 66 indicate?
It denotes a voltmeter switch for phase‑neutral and phase‑phase voltages.
What is the current rating of this switch?
It has an IEC conventional free air thermal current (Ith) of 16 A.
How is the GX1666O48 mounted?
It mounts on a 35 mm DIN rail using the O48 modular service cover with black handle.
What is the frontal protection rating?
The frontal degree of protection is IP65.
Which standards does it conform to?
It conforms to IEC/EN/BS 60947-1/-3/-5-1 and IEC/EN/BS 61058-1, plus UL60947-4-1 and CSA C22.2 n° 14.
Safety note: Installation and operation must be performed by qualified personnel. Isolate all power before work, verify ratings and environmental suitability, and follow applicable IEC/EN/BS, UL and CSA standards.
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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...