Product Description

Siemens 8WN4420-0HA00 Buzzer Element – 24V AC/DC, Pulsating Sound, 70mm

The Siemens 8WN4420-0HA00 is a buzzer element for the Siemens 8WN44 signalling-column system, designed to provide a pulsating/discontinuous audible signal. The exact article operates on 24 V AC/DC, is designed for the 70 mm diameter modular signalling-column system, and has a black thermoplastic enclosure with IP65 protection as part of the 8WN44 system. Siemens product data identifies 8WN4420-0HA00 as the 24 V AC/DC pulsating-tone buzzer element.

For SB Smart, this product is positioned as a Siemens industrial signalling component for machine alarms, warning indication, control panels, switchboards, equipment status signalling, maintenance and replacement requirements.

Siemens 8WN4420-0HA00 Buzzer Element

The 8WN4420-0HA00 belongs to the Siemens 8WN44 signalling-column family, which uses modular elements with a 70 mm diameter. The system includes audible buzzer elements and LED light elements that can be combined into one signalling column. Siemens documentation specifies that up to five elements can be mounted in the modular system.

The exact article is the 24 V AC/DC pulsating-tone buzzer version.

24 V AC/DC Operation

The 8WN4420-0HA00 is designed for 24 V AC/DC operation. The product specification and current product listings confirm the auxiliary supply as 24 Vac/dc.

The control voltage should always be matched with the actual signalling circuit before installation.

Pulsating / Discontinuous Sound

The defining function of the 8WN4420-0HA00 is its pulsating or discontinuous audible sound. Siemens lists this article under the pulsating tone buzzer category.

An intermittent sound can make a warning or attention condition more noticeable compared with a continuous tone, particularly when combined with visual signalling elements.

70 mm Signalling-Column System

The product is designed for the Siemens 8WN44 signalling-column system with 70 mm diameter. The system uses modular thermoplastic elements that can be combined according to the required signalling configuration.

This makes the buzzer suitable for installation with compatible 8WN44 LED and mounting elements.

IP65 Protection

Siemens documentation specifies an IP65 degree of protection for the 8WN44 signalling-column system. The system uses a thermoplastic enclosure and is intended for industrial signalling applications where protection from dust and water jets is required.

The final protection level depends on correct installation and assembly of the complete signalling column.

Thermoplastic Enclosure

The buzzer is part of the 8WN44 system using a thermoplastic enclosure. Siemens product documentation identifies the 70 mm signalling-column system with thermoplastic construction.

The black enclosure provides the housing for the audible signalling element.

Modular Signalling Column

The 8WN4420-0HA00 is a buzzer element, not a complete signalling column.

It can be combined with compatible:

• Continuous LED light elements

• Blinking LED light elements

• Other buzzer/signalling elements

• Connection elements

• Covers

• Mounting accessories

Siemens specifies up to five elements in one 8WN44 modular signalling column.

Audible Alarm Applications

The buzzer element can be used for compatible conditions such as:

• Equipment alarm

• Fault indication

• Machine warning

• Operator attention

• Process-status notification

• Electrical-panel alarm

• Industrial equipment status

The actual alarm logic is determined by the control circuit connected to the buzzer.

Industrial Signalling Applications

The 8WN4420-0HA00 can be considered for applications such as:

• Industrial control panels

• Electrical switchboards

• Machine panels

• Factory signalling systems

• Equipment warning systems

• Industrial machinery

• Process indication systems

• Maintenance and replacement installations

Its pulsating sound is particularly suitable where an intermittent warning signal is required.

Continuous vs Pulsating Buzzer

Within the Siemens 8WN44 range, the buzzer function is available in different sound types and voltages.

For 24 V AC/DC:

• 8WN4420-0GA00 – Continuous tone

• 8WN4420-0HA00 – Pulsating tone

The 0HA00 version is therefore appropriate when an intermittent audible warning is required.

Compatible LED Light Elements

The 8WN44 modular system also includes LED light elements in different colours and operating modes.

For 24 V AC/DC continuous-light elements, Siemens lists:

• Red – 8WN4420-5AB00

• Green – 8WN4420-5AC00

• Yellow – 8WN4420-5AD00

• Clear – 8WN4420-5AE00

• Blue – 8WN4420-5AF00

Blinking LED versions are also available for the same voltage range.

Mounting and Connection Accessories

Siemens lists accessories for assembling an 8WN44 signalling column, including:

• 8WN4408-0AF00 – Connection element

• 8WN4408-0AG00 – Cover

• 8WN4408-0DH00 – Foot with 60 mm pipe

• 8WN4408-0DJ00 – Foot with 80 mm pipe

• 8WN4408-0DA00 – Foot with 110 mm pipe

• 8WN4408-0CC00 – Wall-mounting bracket

• 8WN4408-0CF00 – Mounting with feet and pipe

• 8WN4408-0CG00 – Fold-out support/pivoting base

The correct mounting arrangement depends on the required installation.

Replacement and Maintenance

The 8WN4420-0HA00 can be useful when an existing Siemens 8WN44 signalling column requires replacement of a 24 V AC/DC pulsating buzzer element.

Before ordering, verify:

• 8WN44 system compatibility

• Supply voltage

• Pulsating versus continuous sound

• Signalling-column diameter

• Existing connection arrangement

• Mounting accessories

This helps avoid selecting the similar-looking continuous-tone article.

Related Buzzer Versions

Siemens lists the 8WN44 pulsating-tone buzzer range as:

• 8WN4420-0HA00 – 24 V AC/DC

• 8WN4440-0HA00 – 110 V AC/DC

• 8WN4450-0HA00 – 220 V AC

The voltage must be matched to the signalling circuit.

Standard Package Quantity

The Siemens 8WN44 selection data specifies 1 unit as the standard package quantity for the buzzer element.

This makes it suitable for individual replacement and maintenance procurement.

Current Product Status

Current product information identifies 8WN4420-0HA00 as an active Siemens product (PLM PM300: Active Product), with a listed standard lead time in the referenced product data.

Availability and delivery should still be confirmed at the time of purchase.

Suitable for Electrical Panel Builders and Industrial Buyers

The Siemens 8WN4420-0HA00 is relevant for:

• Electrical panel builders

• Industrial buyers

• Maintenance departments

• Electrical contractors

• Machine builders

• OEM maintenance teams

• Electrical product dealers

• Replacement-part procurement

For SB Smart, the product is positioned around industrial electrical product supply and procurement, without claiming automation integration or automation-service work.

Key Features

• Siemens 8WN44 signalling-column element

• Article number 8WN4420-0HA00

• Buzzer element

• Pulsating / discontinuous sound

• 24 V AC/DC

• 70 mm diameter

• Black thermoplastic enclosure

• IP65 8WN44 system

• Modular signalling-column design

• Up to 5 elements can be mounted in one column

• Standard package quantity: 1 unit

• Current product status: Active Product

Benefits

• 24 V AC/DC operation: Suitable for common industrial signalling control circuits.

• Pulsating sound: Provides a noticeable intermittent audible alarm.

• 70 mm modular format: Fits the Siemens 8WN44 signalling-column platform.

• IP65 system: Suitable for many industrial environments when correctly assembled.

• Modular construction: Can be combined with LED light elements and other accessories.

• Easy replacement: Individual packaging is convenient for maintenance requirements.

• Active product: Supports current procurement and replacement needs.

Why Choose Siemens 8WN4420-0HA00?

The Siemens 8WN4420-0HA00 is a 24 V AC/DC pulsating-tone buzzer element for the 70 mm Siemens 8WN44 signalling-column system. Siemens product data identifies it as the pulsating-tone version, while the 8WN44 system provides IP65 protection, modular construction and support for up to five signalling elements.

It is suitable for customers looking to buy or source Siemens signalling buzzer elements for industrial alarm indication, machine warning systems, electrical panels, switchboards, maintenance and replacement requirements.

For SB Smart, this product is best presented as a Siemens industrial signalling component for supply and procurement across India.

Delivery Across India

SB Smart supplies Siemens industrial electrical products and signalling accessories across Faridabad, Gurgaon/Gurugram, Delhi NCR, Haryana, Noida, Punjab, Mumbai and other major Indian cities.

Major delivery locations include:

• Faridabad

• Delhi

• Gurgaon/Gurugram

• Delhi NCR

• Noida

• Greater Noida

• Haryana

• Punjab

• Mumbai

• Pune

• Ahmedabad

• Bengaluru

• Hyderabad

• Chennai

• Kolkata

• Jaipur

• Chandigarh

• Lucknow

• Indore

• Surat

• Vadodara

• Nagpur

• Coimbatore

• And other major cities across India

Frequently Asked Questions

1. What is Siemens 8WN4420-0HA00?

The 8WN4420-0HA00 is a Siemens buzzer element with pulsating/discontinuous sound for the 8WN44 70 mm signalling-column system.

2. What is the operating voltage?

The operating voltage is 24 V AC/DC.

3. What type of sound does it produce?

It produces a pulsating or discontinuous sound.

4. What is the diameter?

It belongs to the 70 mm diameter 8WN44 signalling-column system.

5. What is the protection rating?

The Siemens 8WN44 signalling-column system is specified with IP65 protection.

6. Can it be combined with LED lights?

Yes. The 8WN44 system is modular and supports buzzer and LED light elements in the same signalling column.

7. How many elements can be mounted in one column?

Siemens specifies up to five elements in the modular 8WN44 system.

8. What is the difference between 8WN4420-0GA00 and 8WN4420-0HA00?

8WN4420-0GA00 provides a continuous tone, while 8WN4420-0HA00 provides a pulsating tone.

9. What is the standard package quantity?

The standard package quantity is 1 unit.

10. Is 8WN4420-0HA00 an active product?

Current product information identifies it as PLM PM300: Active Product.

11. Where can I buy Siemens 8WN4420-0HA00 in India?

SB Smart supplies Siemens industrial signalling products and 8WN44 signalling-column accessories in India for industrial buyers, panel builders, maintenance requirements and replacement procurement.