The AtlasIED HLE-3T Explosion-Proof Compression Driver is a 60-watt, 70.7V loudspeaker driver engineered for industrial paging, voice communication, and electronic signaling in approved hazardous locations. Featuring a rugged die-cast aluminum housing, factory-installed T-18 transformer, and UL-listed construction, the HLE-3T provides reliable audio performance in environments where combustible gases or vapors may be present.
Designed for hazardous-area communication systems, the HLE-3T is approved for Class I, Division 1, Groups B, C, and D applications within the conditions of its listing. This includes certain industrial environments where hydrogen and other classified gases or vapors may be present.
The HLE-3T features a built-in 60-watt transformer with selectable 2.5W, 5W, 10W, 20W, 40W, and 60W taps for integration into compatible 70.7V distributed audio systems.
Its heavy-duty aluminum enclosure incorporates a factory-provided pipe seal with integral field wiring leads and an adjustable mounting bracket for installation flexibility.
For directional sound coverage, the HLE-3T accepts two compatible AtlasIED horn projectors: the HLE/MLE-30 wide-angle horn and the HLE/MLE-32 circular-dispersion horn.
Both horn models are UL-listed for use with the HLE/MLE explosion-proof driver series and are sold separately.
AtlasIED HLE-3T Key Features
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60-Watt Explosion-Proof Compression Driver: Designed for industrial voice communication and electronic signaling.
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70.7V Distributed Audio Compatibility: Includes a factory-installed T-18 transformer for constant-voltage speaker systems.
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Six Selectable Power Taps: Supports 2.5W, 5W, 10W, 20W, 40W, and 60W settings.
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Class I, Division 1, Groups B, C, and D: Listed for specified hazardous gas and vapor environments.
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UL 1203 Safety Listing: Designed for use in approved hazardous-location installations.
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Heavy-Duty Aluminum Housing: Rugged die-cast enclosure protects the compression driver.
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Factory-Installed Transformer: Required for maintaining the applicable UL-listed configuration.
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Adjustable Mounting Bracket: Allows positioning for effective sound coverage.
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Integral Field Wiring Leads: Provides connections for installation into an approved electrical system.
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Two Compatible Horn Options: Supports AtlasIED HLE/MLE-30 and HLE/MLE-32 horn projectors.
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High Speech Intelligibility: Designed for paging, announcements, and industrial signaling.
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Professional Industrial Applications: Suitable for appropriately classified hazardous-area communication systems.
Designed for Hazardous Industrial Environments
The AtlasIED HLE-3T is engineered for communication systems installed in locations where combustible gases or vapors may create hazardous operating conditions.
Its explosion-proof construction and UL listing make it suitable for specified Class I, Division 1, Groups B, C, and D environments when installed in accordance with applicable requirements.
Potential applications include industrial processing facilities, chemical plants, petroleum facilities, and other locations requiring hazardous-area-rated audio equipment.
The HLE-3T is intended for voice and signaling applications where dependable communication is essential.
Important: The installation location, hazardous-area classification, complete loudspeaker configuration, and wiring methods must comply with the manufacturer's listing and applicable electrical codes.
Built-In 70.7V Transformer with Selectable Power Taps
The HLE-3T includes a factory-installed AtlasIED T-18 transformer for use with compatible 70.7V distributed audio systems.
Available power taps include:
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2.5 watts
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5 watts
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10 watts
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20 watts
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40 watts
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60 watts
These settings allow installers to configure loudspeaker power according to the requirements of the paging or signaling system.
The factory-installed transformer is an important part of the HLE-3T's hazardous-location-approved configuration.
Compatible AtlasIED Explosion-Proof Horns
The HLE-3T compression driver is designed for use with two approved AtlasIED horn projectors.
AtlasIED HLE/MLE-30 Wide-Angle Horn
The HLE/MLE-30 is a polycarbonate projector designed for wide-area sound coverage.
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Wide-angle horn design
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120° horizontal × 60° vertical coverage, per AtlasIED's horn product listing
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Polycarbonate construction
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UL-listed for use with compatible HLE/MLE explosion-proof drivers
This horn is useful where broad directional coverage is needed for paging and announcements.
AtlasIED HLE/MLE-32 Circular-Dispersion Horn
The HLE/MLE-32 is a spun-aluminum bell projector designed for circular sound distribution.
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16.5-inch diameter horn
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95° circular dispersion
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Spun-aluminum construction
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UL-listed for use with compatible HLE/MLE explosion-proof drivers
This configuration is useful where a circular coverage pattern is preferred.
Important: Only the HLE/MLE-30 and HLE/MLE-32 horn projectors are UL-listed by AtlasIED for use with the HLE/MLE explosion-proof driver series.
Both horns are sold separately.
AtlasIED HLE-3T Technical Specifications
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Specification
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Details
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Manufacturer
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AtlasIED
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Model
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HLE-3T
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Product Type
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Explosion-proof compression driver
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Rated Power
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60 watts continuous
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Distributed Audio Voltage
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70.7V
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Transformer
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Factory-installed AtlasIED T-18
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Power Taps
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2.5W, 5W, 10W, 20W, 40W, 60W
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Frequency Response
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250 Hz–12 kHz
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Sensitivity with HLE/MLE-30
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108 dB
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Sensitivity with HLE/MLE-32
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111 dB
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Hazardous Location Classification
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Class I, Division 1, Groups B, C, D
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Safety Listing
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UL 1203
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Housing Material
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Die-cast aluminum
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Wiring
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Integral field wiring leads and pipe seal
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Mounting
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Adjustable mounting bracket
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Compatible Horns
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HLE/MLE-30 and HLE/MLE-32
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HLE/MLE-30 Dispersion
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120° × 60°, per horn product listing
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HLE/MLE-32 Dispersion
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95° circular
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HLE/MLE-32 Diameter
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16.5 inches
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Warranty
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60 months from purchase
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Horn Included
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No — sold separately
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Recommended Applications
Industrial Paging Systems
Provide voice announcements and paging in appropriately classified hazardous locations.
Chemical Processing Facilities
Support communication systems in areas requiring explosion-proof audio equipment.
Petroleum and Gas Facilities
Deliver voice and electronic signaling in approved hazardous gas environments.
Manufacturing Plants
Integrate into industrial communication systems where hazardous-location equipment is required.
Industrial Safety Communications
Support audible communication and signaling as part of a properly engineered facility system.
Why Buy the AtlasIED HLE-3T from Audio Supply?
Audio Supply offers AtlasIED industrial audio equipment for professional communication systems. We can help you identify the correct explosion-proof driver and compatible horn projector for your installation.
Need a Compatible Explosion-Proof Horn?
The AtlasIED HLE-3T requires a compatible horn projector, which is sold separately.
Choose from the AtlasIED HLE/MLE-30 Wide-Angle Horn or the AtlasIED HLE/MLE-32 Circular-Dispersion Horn, depending on the required coverage pattern.
Contact Audio Supply for assistance selecting the appropriate horn for your application.
