Audible signal device | 30mm | 230V | IP40 | black

Panel buzzer – an electrical signalling device designed to provide an audible indication of equipment status, faults, alarms, process completion or another event defined within a control system. The buzzer is powered by 230V AC and is intended for installation on the front of control panels, automation cabinets, machine control panels and other electrical systems.

The compact panel-mount design is intended for installation in an approximately Ø30mm mounting position. The diameter of the buzzer head is approximately Ø36.2mm, allowing the device to remain clearly visible while occupying minimal space on the control panel.

Application

The panel buzzer is designed to provide audible information to an operator or service personnel about the status of equipment or a technological process.

It can be used as an audible indicator for alarms, faults, emergency conditions, process completion, activation or other events defined by the control system.

Operating principle

When 230V AC is applied to the buzzer supply terminals, the device generates an audible signal. In this way, an electrical control signal is converted into a clearly audible warning for the operator.

The buzzer can be controlled via a controller output, relay, contactor, limit switch or another properly selected control element, depending on the electrical diagram of the particular system.

Panel mounting

The audible signalling device is designed for installation in a control panel or electrical cabinet door. The mounting section has an M30 thread, while the front head diameter is Ø36.2mm.

The maximum specified panel thickness is 5mm. Above the panel, the buzzer head protrudes by approximately 14.6mm, while the main body section below the panel surface is approximately 40mm long.

Main dimensions

Technical specification

IP40 protection

The IP40 protection degree means that the enclosure provides protection against the ingress of solid objects of a certain size, but does not provide protection against water.

For this reason, the buzzer is primarily suitable for use in control cabinets, panels and other locations where it is not directly exposed to water, rain or intensive moisture.

Main features

Advantages

Disadvantages / limitations

Suitable for

• Electrical control panels
• Automation cabinets
• Machine and equipment control panels
• Fault and alarm signalling
• Audible indication of technological process status
• Relay and PLC-controlled systems where the output circuit is suitable for a 230V AC load
• Industrial and building automation systems

Not suitable for

• Direct outdoor installation without additional protection against water
• 24V, 48V or other control circuits
• Locations requiring IP65 or a higher protection degree
• Environments outside the -25°C...+55°C operating temperature range
• Use as the only emergency safety measure

Practical application example

Installation

The buzzer is installed in a control panel or cabinet door using its M30 mounting section. Before installation, the panel opening dimensions must be checked and the panel thickness must not exceed the specified product limit.

The electrical connection must be made according to the 230V AC control circuit diagram. Before carrying out installation or wiring work, the circuit must be disconnected from the power supply.

Frequently asked questions (FAQ)

Panel buzzer – a 230V AC audible warning device for control and automation systems. Current consumption up to 20mA, operating frequency 50–60Hz, protection degree IP40, operating temperature from -25°C to +55°C. M30 panel mounting, front diameter Ø36.2mm.