Federal Signal 31X-120-3 - Vibrating Horn, Explosion-Proof, UL and cUL CID1, 120VAC
Federal Signal

31X-120-3

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

UPC: 782979225706


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Overview

The Federal Signal 31X-120-3 is an explosion-proof vibrating horn designed for critical audible signaling in hazardous industrial environments. Certified to UL and cUL Class I, Division 1, Groups C & D; Class II, Division 1, Groups E, F, & G; and Class III, this horn ensures safe operation where flammable gases, dust, or fibers may be present. Operating at 120 VAC, it integrates easily with standard industrial power supplies. The robust, copper-free cast aluminum housing is corrosion-resistant and tapped for 3/4" conduit, facilitating installation. It produces a loud 100 dBa at 10' (110 dBa at 1m) sound output, ensuring audibility over ambient noise. The stainless steel diaphragm guarantees long life. With a 5-minute duty cycle, the 31X-120-3 is suitable for applications such as fire alarm notification systems, gas leak detection, and general process alarms in oil and gas, chemical processing, and mining operations. Trust Federal Signal for reliable, compliant safety signaling.
  • Explosion-proof design for Class I, II, III Division 1 hazardous locations
  • UL and cUL Listed for Groups C, D, E, F, G
  • 120 VAC operating voltage for easy integration
  • Produces 100 dBa @ 10' (110 dBa @ 1m) for clear audibility
  • Corrosion-resistant cast aluminum housing with stainless steel diaphragm

Specifications

-13 to 104
DEG F
0.20
AMP
100
dBa
110
dBa
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
0.2 AMP
Operating Temperature
-13 to 104 DEG F
Operating Voltage
120VAC 50-60Hz
Special Features
Five Minute Duty Cycle
Standard
UL Listed/cUL Listed/CSA Certified
Standard
CSA,UL,cUL
Sub Brand
Vibratone
Type
Audible Signals
Type
Explosion-Proof Vibrating Horn
Voltage Rating
120 VAC
Package Dimensions (L x W x H)
8.5 IN x 10 IN x 12 IN
Package Dimensions (L x W x H)
21.59 cm x 25.4 cm x 30.48 cm
Package Weight (Imperial)
8.100 L
Package Weight (Metric)
3.674 kg
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Frequently Asked Questions

What is the primary use of the 31X horn?

The 31X explosion-proof vibrating horn is constructed for safe use in hazardous environments.

What material is the 31X horn's housing made from?

The 31X horn is enclosed in a heavy-duty copper-free cast aluminum housing.

Is the 31X horn corrosion resistant?

Yes, the 31X is a corrosion resistant vibrating horn with a stainless steel diaphragm.

Does the 31X model include volume control?

Yes, the Model 31X features an internal volume control.

What is the duty cycle for the 31X horn?

The 31X horn has a duty cycle of 5 minutes ON/5 minutes OFF.

What is the sound output level of the horn?

The horn produces 100 dBa at 10 feet (110 dBa at 1 meter).

What are the mounting options for the horn?

The horn can be mounted using 3/4-inch pipe or surface mount.

What certifications does the 31X horn have?

The 31X horn is CSA Certified.

What hazardous locations is the 31X horn rated for?

It 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 operating voltage for model 31X-120-3?

Model 31X-120-3 operates on 120VAC 50/60Hz.

How to Install the 31X Explosion-Proof Horn

This guide provides step-by-step instructions for installing and wiring the 31X Explosion-Proof Horn in hazardous locations.

Estimated time: 45m

Tools needed:

Screwdriver, Mallet, 1/8" Hex Wrench, 1/4" Wrench

Supplies needed:

Mounting screws, 3/4" pipe, Terminal connectors

  1. Unpack and Inspect the Horn

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

  2. Mount the Horn

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

  3. Make Electrical Connections

    Ensure power is off before connecting wires. Remove the set screw from the collar using a 1/8" hex wrench, then rotate the collar counterclockwise to remove it. 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)

    If volume adjustment is needed, remove the horn mechanism again. Use a 1/4" wrench to turn the adjustment screw clockwise to increase volume. Replace the mechanism and collar as previously described.

  5. Final Checks

    After installation, 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.