Federal Signal 31X-240 - Vibrating Horn, Explosion-Proof, UL and cUL CID1, 240VAC
Federal Signal

31X-240

Alternate Item Number: 31x-and-41x-horn

UPC: 782979225713


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Installation InstructionsLine DrawingSpecification SheetWarranty

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Overview

The Federal Signal 31X-240 vibrating horn is a UL and cUL CID1 certified explosion-proof device designed for hazardous industrial environments where flammable gases or combustible dusts are present. Operating at 240 VAC, this horn meets OSHA and industry regulations for audible signaling in high-risk zones such as chemical plants, oil refineries, offshore platforms, and mining operations. Its robust construction ensures reliable performance in harsh conditions, with a precise vibration mechanism delivering clear, high-output sound signals that cut through ambient noise. Certified for Class I, Division 1 hazardous locations, the 31X-240 provides dependable operation with minimal maintenance. The horn integrates seamlessly with standard industrial power systems and is built to withstand corrosion, temperature extremes, and mechanical stress. Ideal for emergency alerts, fire alarm systems, and process control interfaces, this Federal Signal product offers a proven solution for safety compliance and personnel protection in critical applications.
  • UL and cUL CID1 certified for Class I, Division 1 hazardous locations
  • Operates at 240 VAC for compatibility with industrial power systems
  • High-output vibrating horn delivers clear audible alerts in noisy environments
  • Robust explosion-proof construction withstands harsh industrial conditions
  • Low-maintenance design ensures long service life with minimal servicing

Specifications

-13 to 104
DEG F
0.10
AMP
100
dBa
110
dBa
240
VAC
240VAC
V
Application
Indoor/Outdoor
Brand Name
Federal Signal
Color
Gray
dBa at 10ft
100 dBa
dBa at 1M
110 dBa
Dimensions
7.625 H x 6.5 W x 6.5 D
Loudness
100 DB
Material
Corrosion-Resistant Cast Aluminum Housing
Mounting
3/4-Inch Pipe,Surface
Operating Current
0.1 AMP
Operating Temperature
-13 to 104 DEG F
Operating Voltage
240VAC 50-60Hz
Special Features
Five Minute Duty Cycle
Standard
UL Listed/cUL Listed/CSA Certified
Standard
CSA,UL,cUL
Sub Brand
Vibratone
Type
Explosion-Proof Vibrating Horn
Type
Audible Signals
Voltage Rating
240 Vac
Package Dimensions (L x W x H)
10.25 IN x 12 IN x 8.5 IN
Package Dimensions (L x W x H)
26.035 cm x 30.48 cm x 21.59 cm
Package Weight (Imperial)
8.100 L
Package Weight (Metric)
3.674 kg
Marine/Industrial Powered Loudspeaker, 15 Watt, 24VDC, 110/120VAC, 220/240VAC - 117 dBa at 1m. On-board choice of 15 tones. Remote tone selection. Dual cable entries. Integrated DC and AC voltages. Short horn version (8W). IP66 or IP67 enclosure. CE Certified.

MS1-112-14

Marine/Industrial Powered Loudspeaker, 15 Watt, 24VDC, 110/120VAC, 220/240VAC - 117 dBa at 1m. On-board choice of 15 tones. Remote tone selection. Dual cable entries. Integrated DC and AC voltages. Short horn version (8W). IP66 or IP67 enclosure. CE Certified.
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Frequently Asked Questions

What is the operating voltage for Model 31X-240?

Model 31X-240 operates on 240VAC at 50/60Hz.

What is the current draw for the 31X-240?

The 31X-240 draws 0.10 amps during operation.

What is the decibel output of the 31X-240 horn?

The 31X-240 produces 100 dBa at 10 feet and 110 dBa at 1 meter.

What are the hazardous location ratings for the 31X-240?

The 31X-240 is UL and cUL Listed for Class I, Division 1, Groups C and D; Class II, Division 1, Groups E, F, and G; and Class III.

What is the T-Code rating for the 31X-240?

The 31X-240 has a T6 T-Code rating at a maximum ambient temperature of 40°C for all listed hazardous locations.

What is the operating temperature range for the horn?

The operating temperature range for the horn is -13°F to 104°F (-25°C to 40°C).

What is the duty cycle for the 31X-240 horn?

The 31X-240 has a duty cycle of 5 minutes ON and 5 minutes OFF.

What are the mounting options for the 31X-240?

The 31X-240 can be mounted using a 3/4-inch pipe or surface mount. It is tapped for 3/4-inch conduit.

What materials are used in the horn's construction?

The horn features heavy-duty copper-free cast aluminum housing and a stainless steel diaphragm for corrosion resistance.

What are the dimensions of the 31X-240 horn?

The 31X-240 has a height of 7.63 inches, a depth of 6.5 inches, and a diameter of 6.5 inches.

How to Install the Model 31X Explosion-Proof Horn

This guide provides step-by-step instructions for safely installing and configuring the Model 31X explosion-proof horn in hazardous locations.

Estimated time: 45m

Tools needed:

Screwdriver, Hex wrench (1/8"), Mallet

Supplies needed:

Mounting screws, 3/4" pipe, Terminal connectors

  1. Unpack and Inspect the Horn

    Carefully unpack the Model 31X horn and inspect it for any damage that may have occurred during shipping. If damaged, do not install and file a claim with the carrier.

  2. Mount the Horn

    Secure the horn to a rigid surface using user-supplied mounting hardware. Ensure that the mating threads are clean and thread a 3/4" pipe into the horn outlet box.

  3. Make Electrical Connections

    WARNING: Do not connect wires when power is applied. Remove the set screw from the collar using a hex wrench. Rotate the collar counterclockwise with a screwdriver and mallet until it can be removed. Lift the horn mechanism from the housing and connect the fixture wires to the supply wires according to local building codes. Replace the horn mechanism and collar, tightening securely.

  4. Adjust Volume (if necessary)

    To adjust the volume, remove the horn mechanism as described in the previous step. Use a 1/4" wrench to turn the adjustment screw clockwise until the desired volume is reached. Replace the horn mechanism and collar as before.

  5. Final Checks

    Ensure all bolts and threaded joints are tightened. Establish a procedure for routine checks of the sound system for proper activation and operation.

Frequently Asked Questions about Federal Signal

What certifications and standards do Federal Signal products comply with?

Federal Signal products are certified across multiple international standards, including UL (Underwriters Laboratories) in the USA, CSA (Canadian Standards Association), CE (European Community), UKCA (United Kingdom), EAC (Russia), and C-Tick (Australia and New Zealand). Their products meet rigorous safety and performance standards for industrial environments, with specific compliance in electrical equipment enclosures, functional safety, and environmental protection ratings.

What is Federal Signal's warranty policy?

Federal Signal offers a comprehensive limited warranty covering most products for 1-5 years from the date of delivery, with specific terms varying by product category. Mechanical sirens, beacons, speakers, and sounders typically receive 5-year parts and labor coverage, while electronic sirens and controllers generally have 2-year warranties. All warranties require return to the factory for service, and on-site services are not included. Certain components like domes, lenses, lamps, and batteries are specifically excluded from warranty coverage.

What industries and applications are Federal Signal products used for?

Federal Signal products are used across multiple critical industrial and municipal sectors for notification, communication, and safety systems. Their product lines cover essential applications including fire alarm systems, public address and telephony, outdoor warning systems, visual and audible signals, and emergency communication networks. Key industries served include manufacturing, municipal emergency services, industrial facilities, and infrastructure environments where clear, reliable communication and safety signaling are paramount.

What technical support does Federal Signal offer?

Federal Signal offers comprehensive technical support through their dedicated [email protected] email and direct phone line at +1 708.534.4756. Their support covers a wide range of notification and communication solutions, including technical assistance for products in public address, telephony, fire alarm, visual and audible signals, outdoor warning systems, and intercoms.

What are the main product lines offered by Federal Signal?

Federal Signal offers comprehensive notification and communication solutions across multiple product lines, including Visual Signals, Audible Signals, Telephony, Intercoms, Fire Alarm, Outdoor Warning Systems, Public Address, and Initiating Systems. Their product range is designed to provide clear communications and critical process notifications that enhance safety and compliance in industrial and public environments.

What are the key features of Federal Signal products?

Federal Signal products are comprehensive notification solutions designed to enhance safety and communication across industrial environments. Their key features include visual and audible signals, fire alarm systems, outdoor warning systems, public address capabilities, telephony, and intercoms. These products provide critical process notifications, ensure safety compliance, and offer advanced technologies like secure encrypted communication, cloud-based control systems, and customizable emergency response interfaces.

What environmental ratings do Federal Signal products have?

Federal Signal products offer robust environmental ratings across multiple standards, including UL 508A, CSA, NEMA, and IEC 60529. Their enclosures are rated for Type 1, 2, 3, 4, 4X, 12, and 13 environments, with IP66 protection, and can operate in temperatures ranging from -40°F to 266°F. These ratings ensure superior protection against dust, water, corrosion, and extreme conditions for indoor and outdoor industrial applications.

What accessories are available for Federal Signal products?

Federal Signal offers multiple accessories for their signaling products, including coupling kits, cable entry adapters, indicator rings, legend plates, and mounting brackets. Key accessories include E-Box endcap kits with M20 and M25 openings, U-Brackets for dual configurations, and color-coded indicator rings in black, blue, green, magenta, red, and yellow. Additional options like adapters for NPT connections and specialized mounting hardware are also available for their Global Series signaling platforms.

What communication protocols do Federal Signal products support?

Federal Signal supports multiple industrial communication protocols including PROFIBUS DP, PROFINET, EtherNet/IP, CANopen, and Modbus RTU. These protocols enable flexible network integration across various industrial automation environments, supporting both traditional fieldbuses and modern Ethernet-based communication standards.

How are Federal Signal products typically installed?

Federal Signal products are typically installed using professional mounting configurations that include wall brackets, base stations, and specialized mounting hardware. Depending on the specific product line—such as outdoor warning systems, visual signals, or audible signals—installation involves precise mounting options like wall-mount antenna brackets, base station radio packages, and modular component assemblies. Each product configuration includes specific mounting accessories like endcaps, adapters, and terminal blocks to ensure secure and compliant installation in industrial and safety-critical environments.