855H-BA20ED

Overview of Allen Bradley 855H-BA20ED

The Allen Bradley 855H-BA20ED is a high-performance industrial electronic horn designed for reliable audible signaling in demanding environments. Operating at 230 VAC, this model delivers a powerful sound output of approximately 110 dBA at 10 feet, making it effective for alerting personnel over significant ambient noise levels. The unit features a durable, UV-stable plastic enclosure rated at IP66, ensuring resistance to dust and water ingress. With up to 45 selectable tones adjustable by dip switch and support for multiple output stages, the 855H-BA20ED is versatile for diverse industrial signaling applications. Its robust construction meets tough shock and vibration standards, suitable for harsh industrial settings. This horn is often used where clear, loud notifications are essential for safety and process control.

Key Features of Allen Bradley 855H-BA20ED

• Operates on 230 VAC power supply for wide industrial compatibility.
• Sound output reaches up to 110 dBA at 10 feet to ensure audibility.
• Selectable multi-tone output with up to 45 tones via dip switches.
• Three output stages allow flexible alarm signaling patterns.
• IP66-rated UV-stable plastic enclosure provides protection against dust and water.
• Meets UL Type 13/3R for reliable performance in industrial environments.
• Withstands mechanical shock up to 15 G peak and vibration up to 3 G peak.
• Standard base mount with back feed or conduit feed options for easy installation.
• Suitable for applications requiring clear, high-decibel audible alarms.

Technical Specs of 855H-BA20ED

Specification	Details
Power Supply	230 VAC
Sound Output	Approx. 110 dBA at 10 feet
Tones Available	Up to 45 selectable tones
Output Stages	Up to 3 stages
Ingress Protection	IP66
Enclosure Material	UV-stable plastic (ABS cover and base)
Operating Temperature	-25 to +55 °C (-13 to +131 °F)
Shock Resistance	15 G peak
Vibration Resistance	3 G peak
Mounting	Standard Base Back Feed or Conduit Feed

Applications / Use Case

Allen Bradley 855H-BA20ED electronic horns are widely employed in industrial facilities for audible alerting and warning systems. Their strong sound output and multiple tones make them suitable for environments such as manufacturing plants, processing facilities, and warehouses where clear alarms are critical for worker safety and equipment status notification. The IP66 rating allows operation in dusty, wet, or outdoor locations without compromising performance. Common applications include emergency signaling, equipment fault alerts, startup warnings, and evacuation alarms. These horns integrate easily with control systems, offering reliable performance in both routine and critical signaling scenarios.

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