Federal Signal 56-250-1 - Resonating Horn, 250VDC, Gray
Federal Signal

56-250-1

Alternate Item Number: 55-and-56-resonating-horns

UPC: 782979229704


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Installation InstructionsLine DrawingSpecification SheetWarranty

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Overview

The Federal Signal 250VDC Resonating Horn (SKU 56-250-1) is a DC-powered acoustic signaling device designed for industrial environments requiring high-volume sound output. Rated for 250 VDC operation, this gray metal horn provides consistent performance in factory automation, safety alert systems, and process control applications. Its resonating design amplifies sound for clear audible alerts over background noise. The unit features a compact, industrial-grade construction with corrosion-resistant gray finish, ensuring durability in harsh conditions. Designed for seamless integration into existing control panels and sound-distribution networks, it delivers reliable sound emission without compromising acoustic quality. Backed by Federal Signal’s manufacturing standards, this horn meets stringent reliability requirements for industrial safety and operational signaling.
  • 250 VDC voltage rating for industrial DC power systems
  • Gray metal housing with corrosion-resistant finish
  • Resonating design for high-volume, clear audible alerts
  • Compact, industrial-grade construction for harsh environments
  • Compatible with existing control panels and sound networks

Specifications

250
VDC
250VDC
V
Color
Gray
Enclosure
Type 3R
Mounting
Surface
Operating Temperature
-35D to +150DF (-37D to +66DC)
Series
Resonating Horn
Standard
CSA,UL
Type
Audible Signals
Voltage Rating
250 VDC
Package Dimensions (L x W x H)
8.25 IN x 23.38 IN x 9.38 IN
Package Dimensions (L x W x H)
20.955 cm x 59.3852 cm x 23.8252 cm
Package Weight (Imperial)
6.200 L
Package Weight (Metric)
2.812 kg
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Frequently Asked Questions

What is the operating voltage for Model 56-250-1?

Model 56-250-1 operates on 250VDC.

What is the operating current for Model 56-250-1?

Model 56-250-1 draws 0.25 amps during operation.

What is the sound output of Model 56-250-1?

Model 56-250-1 produces 112 dBA at 10 feet and 122 dBA at 1 meter.

What is the duty cycle for the 56-250-1 horn?

The 56-250-1 horn has a duty cycle of five minutes on, followed by five minutes off.

What is the operating temperature range?

The operating temperature range is -35°F to 150°F (-37°C to 66°C).

Can the 56-250-1 horn be used outdoors?

Yes, it is designed for indoor/outdoor use, weatherproof, water- and dust-tight with a Type 3R enclosure.

What size conduit connection does the horn use?

The housing is tapped for 1/2 inch conduit, using a 1/2 inch npt standard pipe thread.

What are the physical dimensions of the 56-250-1 horn?

The horn measures 7.56 inches in height, 7.56 inches in width, and 23.86 inches in length.

What is the net weight of the 56-250-1 horn?

The net weight of the horn is 5.0 lbs (2.3 kg).

What is the 56-250-1 product type?

The 56-250-1 is a resonating horn that produces sound by means of a diaphragm, resonating a column of air for a louder alert.

How to Install the 56-250-1 Resonating Horn

This guide provides step-by-step instructions for safely installing and configuring the 56-250-1 resonating horn.

Estimated time: 45m

Tools needed:

Screwdriver, Wrench, Wire strippers, Multimeter

Supplies needed:

1/4-20 bolts, Nuts, 3/8 bolts, Lockwashers, Mounting screws, Waterproof cable connector

  1. Mount the housing brackets

    Attach the housing brackets to the rear of the horn housing using the three 1/4-20 bolts and nuts provided.

  2. Install the wall bracket

    Secure the wall bracket to a solid support using suitable bolts or screws, ensuring it is free from vibrations.

  3. Assemble the swivel

    Connect the swivel to the wall bracket and housing bracket using the two 3/8 bolts and nuts provided. Insert lockwashers between the swivel and the brackets to secure the horn in place.

  4. Position the projector

    Aim the projector at least 10° downward to prevent moisture and dirt from entering the horn. Tighten the swivel bolts securely.

  5. Seal the conduit entrance

    If using rigid conduit, ensure it is not clamped closer than three feet from the horn. For flexible cable, ensure the conduit hole is facing down. Use a waterproof cable connector if conditions are dusty or damp.

  6. Verify installation

    After installation, check that all bolts and threaded joints are tightened. Test 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.