Federal Signal MSL3-120 - MicroStat Incandescent Status Indicator, 3-High, UL and cUL, 120VAC, All Lens Colors
Federal Signal

MSL3-120

Alternate Item Number: msl-microstat

UPC: 782979201885


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Installation InstructionsLine DrawingSpecification SheetWarranty

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Overview

The Federal Signal MSL3-120 MicroStat Incandescent Status Indicator is a 3-High unit designed for reliable status signaling in industrial control panels. It operates at 120VAC and features UL and cUL certification, ensuring compliance with safety standards for industrial applications. The MSL3-120 offers all lens color options, allowing for customizable visual alerts to match specific operational needs or safety protocols. Its incandescent technology provides bright, easily discernible illumination, ensuring status information is clear even in varied lighting conditions. Engineered for durability, this indicator is built to withstand typical industrial environments. The 3-High form factor provides a space-efficient mounting solution for densely populated control panels. Manufactured by Federal Signal, a trusted name in industrial components, the MSL3-120 delivers long-life performance and straightforward installation. It is suitable for monitoring system health, indicating fault conditions, or providing clear operational status in manufacturing facilities, power generation, and other industrial settings where dependable visual feedback is critical.
  • 3-High Incandescent Status Indicator
  • 120VAC Operating Voltage
  • UL and cUL Certified
  • Available in All Lens Colors
  • Compact, Space-Efficient Design

Specifications

0.6
A
12.5 H x 2.2 W x 2.2 D
IN
120
VAC
7,000
HR
Amperage
0.6 A
Amperage Rating
0.6 AMP
Application
Indoor
Brand Name
Federal Signal
Color
All Lens Colors
Connection Type
Screw Terminal
Depth
2.2 in
Depth
55.88 mm
Diameter
2.2 in (55.9 mm)
Enclosure
Type 4X
Environmental Conditions
32 to 104 DEG F
Flashing Pattern
Steady/Flashing
Frequency
60 Hz (Assumed standard)
Height
12.5 in
Height
317.5 mm
Lamp Life
7,000 HR
Lamp Type
Wedge
Lens Color
Amber, Blue, Clear, Green, Red;Polycarbonate
Lens Material
Polycarbonate
Material
Rugged Housing (Material not specified)
Mounting
3/4-Inch NPT Pipe/Surface;3/4-Inch Pipe,Surface
Mounting Type
Panel Mount
Operating Temperature
32D to +104DF (0D to +40DC)
Operating Voltage
120
Operating Voltage
120VAC
Series
MicroStat
Size
12.5 H x 2.2 W x 2.2 D IN
Size
3-High
Special Features
Optional Sound Module Model MSS
Standard
UL Listed/cUL Listed
Standard
UL,cUL
Sub Brand
MicroStat
Type
status Indicator
Voltage Rating
120VAC
Width
2.2 in
Width
55.88 mm
Package Dimensions (L x W x H)
20.25 IN x 4.25 IN x 4.25 IN
Package Dimensions (L x W x H)
51.435 cm x 10.795 cm x 10.795 cm
Package Weight (Imperial)
1.300 L
Package Weight (Metric)
0.590 kg
MicroStat Incandescent Status Indicator, 2-High, UL and cUL, 120VAC, Blue, Red

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MicroStat Incandescent Status Indicator, 2-High, UL and cUL, 120VAC, Blue, Red
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Frequently Asked Questions

What are the available voltage options?

The MicroStat is available in 24VAC/DC or 120VAC versions.

What is the diameter of the MicroStat?

The MicroStat has a small footprint with a diameter of 2.2 inches (55.9 mm).

How can the MicroStat be mounted?

It can be surface mounted or integrated with a 3/4-inch NPT pipe mount.

What are the available lens colors?

The five available lens colors are Amber, Blue, Clear, Green, and Red.

Is the MicroStat compatible with PLCs?

Yes, the MicroStat is PLC compatible and designed to work with PLC outputs, including Triacs.

What is the enclosure type of the MicroStat?

The MicroStat is a Type 4X status indicator. With an optional sounder, it is rated NEMA Type 1.

What is the operating temperature range?

The operating temperature range is 32°F to 104°F (0°C to 40°C).

What is the standard lamp life?

The standard wedge-type lamp (#655) has a lamp life of 7,000 hours.

Can an optional sound module be added?

Yes, an optional sound module can be installed in the top position as one of the five units.

What is the sound level of the optional sounder?

The optional sounder produces 93-95 dBa at 1 meter (83-85 dBa at 10 feet).

How to Install the MSL3-120 MicroStat™ Status Indicator

This guide provides step-by-step instructions for installing and configuring the MSL3-120 MicroStat™ Status Indicator, including mounting, wiring, and initial setup.

Estimated time: 45m

Tools needed:

Screwdriver, Wire strippers, Multimeter

Supplies needed:

Mounting screws, O-rings, Terminal connectors

  1. Unpack and Inspect the Unit

    Carefully unpack the MSL3-120 unit and inspect it for any damage that may have occurred during transit. Do not proceed with installation if any damage is found.

  2. Mount the Base

    Remove the colored lenses by twisting the bottom lens counter-clockwise to unlock it. Lift the bottom lens off the base. Remove the two Phillips head #6 screws to disassemble the sleeve from the base. Mount the base onto a 3/4" NPT pipe or a flat surface using the appropriate screws, ensuring it is securely fastened.

  3. Make Electrical Connections

    Feed the control wires through the NPT opening in the base. Connect the wires to the female terminal block plug according to the labeled terminals (1-5). Ensure that power is off during this process to avoid electrical shock hazards.

  4. Reassemble the Unit

    Reattach the sleeve to the base by sliding the printed circuit board into the channels. Secure the sleeve with the screws removed earlier. Ensure that O-rings are in place for watertight sealing before reassembling the colored lenses.

  5. Test the Installation

    Once the unit is fully assembled, restore power and test the MSL3-120 to ensure it operates correctly. Verify that all lights function as intended.

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.