Apply to be a TradeMaster!
Filter menu expanded

Filters

666 items
Reset

SORT

Product Availability

Show In Stock Only (231)

Product Type

Access Door (4)
Control Module (6)
Electrical Part (423)
Light Switch (1)
Relay (173)
Replacement Part (2)
Switching Relay (5)
Transformer (52)

Mount

DIN Rail (2)
Foot (38)
Hub (36)
Panel (2)
Remote (1)

Price Range

Under $1 (2)
$1 to $5 (9)
$5 to $10 (11)
$10 to $15 (6)
$15 to $20 (12)
$20 to $25 (27)
$25 to $30 (19)
$30 to $35 (28)
$35 to $40 (37)
$40 to $45 (40)

Functional Devices

Help Face
Need a little help?
666 items
Grid
List
Compare
Product Image of Enclosed Current Switch, Fixed, 0.50-30A, NEMA 1 Housing
Enclosed Current Switch, Fixed, 0.50-30A, NEMA 1 Housing
SKU: RIBXF
$52.10 each
Out of Stock
Get it by Tue, Aug 25 - Tue, Sep 1
Out of Stock
Get it by Tue, Aug 25 - Tue, Sep 1
Compare
Product Image of Enclosed Low Input/Optoisolated Relay, 20A DPDT + Override, 208-277 Vac Power Input, 5-25 Vac/dc Control Input, Hi/Lo Voltage Separation, NEMA 1 Housing
$166.75 each
Out of Stock
Get it by Tue, Aug 25 - Tue, Sep 1
Out of Stock
Get it by Tue, Aug 25 - Tue, Sep 1
Compare
Product Image of 850VA UPS Backup Power Control Center, Status Contacts, 14" x 16" x 6" Metal Enclosure
$846.55 each
Out of Stock
Get it by Tue, Aug 25 - Tue, Sep 1
Out of Stock
Get it by Tue, Aug 25 - Tue, Sep 1
Compare
Product Image of 4" Track Mount Pilot Relay, 15 Amp 2 SPDT, with 10-30 VAC/DC/120 VAC Coil
$44.80 each
Backorder
Get it by Wed, Sep 9 - Wed, Oct 7
Backorder
Get it by Wed, Sep 9 - Wed, Oct 7
Compare
Product Image of Split Core AC Transducer, 0-10 Amp, 0-5 Vdc Output, Terminals
$40.15 each
Backorder
Get it by Wed, Sep 9 - Wed, Oct 7
Backorder
Get it by Wed, Sep 9 - Wed, Oct 7
Compare
Product Image of Current Switch and Relay Combination, 20 Amp 3PST-N/O, 24Vac/dc Coil, Internal Adjustable, 0.5-20 Amp
$175.60 each
Backorder
Get it by Wed, Sep 9 - Wed, Oct 7
Backorder
Get it by Wed, Sep 9 - Wed, Oct 7
Compare
Product Image of Power Meter, 120-277 Vac, 3-Phase, 2.75" Track Mount
$568.10 each
Out of Stock
Get it by Tue, Aug 25 - Tue, Sep 1
Out of Stock
Get it by Tue, Aug 25 - Tue, Sep 1
Compare
Product Image of Pilot Panel Relay, 15A SPDT + Override w/ 12 Vac/DC Coil, 4" Track Mount
$29.15 each
Out of Stock
Get it by Tue, Aug 25 - Tue, Sep 1
Out of Stock
Get it by Tue, Aug 25 - Tue, Sep 1
Compare
Product Image of Single 100 VA, UL Class 2, Secondary Wires, 10A Main Breaker (120 Vac to 24 Vac Enclosure)
$186.75 each
Backorder
Get it by Wed, Sep 9 - Wed, Oct 7
Backorder
Get it by Wed, Sep 9 - Wed, Oct 7
Compare
Product Image of DIN Rail Mount DC Power Supply, Single Switching, 100-240 Vac to 24-28 Vdc, 3.8A, Screw Terminals, Class 2
$136.50 each
Out of Stock
Get it by Tue, Aug 25 - Tue, Sep 1
Out of Stock
Get it by Tue, Aug 25 - Tue, Sep 1
Compare
Product Image of Enclosed Single 75VA Power Supply, Multi-tap to 24 Vac
$262.64 each
In Stock
Get 1 by Wed, Aug 12
In Stock
Get 1 by Wed, Aug 12
Compare
Product Image of Coin Locking Key Latch Assembly for Use with All Metal Enclosures Except MH3300K
$21.65 each
Out of Stock
Get it by Tue, Aug 25 - Tue, Sep 1
Out of Stock
Get it by Tue, Aug 25 - Tue, Sep 1
Compare
Product Image of General Purpose Latching Panel Logic Circuit Board, 1 Latching/Fault Input, 1 Relay Output, 24 Vac/dc Power Input, 2-3/4" Track Mount
$56.50 each
Out of Stock
Get it by Tue, Aug 25 - Tue, Sep 1
Out of Stock
Get it by Tue, Aug 25 - Tue, Sep 1
Compare
Product Image of 500 VA Power Supply, 100 VA Class, Exterior Receptacle and Circuit Breakers Switches (120 Vac to 24 Vac Enclosure)
$721.15 each
In Stock
Get 4 by Tue, Aug 11
In Stock
Get 4 by Tue, Aug 11
Compare
Product Image of Enclosed Power Relay, Hi/Lo Separation, 20 Amp SPDT with 24 VAC/DC/120 VAC Coil
$43.25 each
Backorder
Get it by Wed, Sep 9 - Wed, Oct 7
Backorder
Get it by Wed, Sep 9 - Wed, Oct 7
Compare
Product Image of EnOcean 902 MHz Wireless Vacancy / Occupancy Sensor - Ceiling Mount
$228.54 each
Out of Stock
Get it by Tue, Aug 25 - Tue, Sep 1
Out of Stock
Get it by Tue, Aug 25 - Tue, Sep 1
Compare
Product Image of Solid Core, Current Transducer, Analog, 0-5 Vdc Output, 0-100 Amp, Terminals
$36.10 each
Backorder
Get it by Wed, Sep 9 - Wed, Oct 7
Backorder
Get it by Wed, Sep 9 - Wed, Oct 7
Compare
Product Image of Enclosed BACnet MS/TP Network Relay Device, One Binary Output, One Binary Input, 24Vac/dc/208-277Vac Power Input, NEMA 1 Housing
$171.95 each
In Stock
Get 2 by Tue, Aug 11
In Stock
Get 2 by Tue, Aug 11
Compare
Product Image of Power Meter, 120-277 Vac, 3-Phase, NEMA 1 Housing
$614.80 each
Out of Stock
Get it by Tue, Aug 25 - Tue, Sep 1
Out of Stock
Get it by Tue, Aug 25 - Tue, Sep 1
Compare
Product Image of 4" x 4" Mounting Snap Track
$2.90 each
Out of Stock
Get it by Tue, Aug 25 - Tue, Sep 1
Out of Stock
Get it by Tue, Aug 25 - Tue, Sep 1
Compare
Product Image of 14.5" H x 7.7" W x 3.9" D Metal Enclosure, NEMA 1
$92.70 each
Backorder
Get it by Wed, Sep 9 - Wed, Oct 7
Backorder
Get it by Wed, Sep 9 - Wed, Oct 7
Compare
Product Image of Split Core, Adjustable Current Switch, 0.75-150 Amp, Wire Leads (120-277 Vac)
Split Core, Adjustable Current Switch, 0.75-150 Amp, Wire Leads (120-277 Vac)
SKU: RIBXG21A
Functional Devices
SKU: RIBXG21A
$80.95 each
In Stock
Get 1 by Tue, Aug 11
In Stock
Get 1 by Tue, Aug 11
Compare
Product Image of Current Switch & Relay Combination, 10A SPST + Override, 10-30 Vac/dc Coil, Fixed, 0.50-10A, NEMA 1 Housing
Current Switch & Relay Combination, 10A SPST + Override, 10-30 Vac/dc Coil, Fixed, 0.50-10A, NEMA 1 Housing
SKU: RIBXLSF
Functional Devices
SKU: RIBXLSF
$78.20 each
Out of Stock
Get it by Tue, Aug 25 - Tue, Sep 1
Out of Stock
Get it by Tue, Aug 25 - Tue, Sep 1
Compare
Product Image of Single 100 VA, UL Class 2, 10A Main Breaker w/input Extension Cord (120 Vac to 24 Vac Enclosure)
$220.20 each
Backorder
Get it by Wed, Sep 9 - Wed, Oct 7
Backorder
Get it by Wed, Sep 9 - Wed, Oct 7
Compare
Product Image of DIN Rail Mount Relay 10 Amp DPDT w/ Override, 24 VAC/DC Coil
$61.50 each
Backorder
Get it by Wed, Sep 9 - Wed, Oct 7
Backorder
Get it by Wed, Sep 9 - Wed, Oct 7
Compare
Product Image of Transformer, 20VA, 277 to 24 Vac, Foot and Single Threaded Hub Mount
$21.10 each
In Stock
Get 4 by Tue, Aug 11
In Stock
Get 4 by Tue, Aug 11
Compare
Product Image of Power Control Center, 10A Switch / Circuit Breaker, 120 Vac, 2 Outlets, Wires, NEMA 1 Housing
$68.45 each
Out of Stock
Get it by Tue, Aug 25 - Tue, Sep 1
Out of Stock
Get it by Tue, Aug 25 - Tue, Sep 1
Compare
Product Image of DIN Rail Mount Relay, 10 Amp DPDT, 24 VAC/DC Coil
$41.85 each
Backorder
Get it by Wed, Sep 9 - Wed, Oct 7
Backorder
Get it by Wed, Sep 9 - Wed, Oct 7
Compare
Product Image of Panel I/O Expander, 2 Outputs, 24 Vac/dc Power Input, 0-10 Vdc / 0-5 Vdc Control Input, 2-3/4" Track Mount
$158.57 each
Out of Stock
Get it by Tue, Aug 25 - Tue, Sep 1
Out of Stock
Get it by Tue, Aug 25 - Tue, Sep 1
Compare
Product Image of 2-3/4" x 4" Mounting Snap Track
$2.75 each
Out of Stock
Get it by Tue, Aug 25 - Tue, Sep 1
Out of Stock
Get it by Tue, Aug 25 - Tue, Sep 1
Compare
Product Image of Current Transducer, Split Core, Analog, 4-20 mA, 0-100A, Wire Leads
$91.25 each
Out of Stock
Get it by Tue, Aug 25 - Tue, Sep 1
Out of Stock
Get it by Tue, Aug 25 - Tue, Sep 1
Compare
Product Image of BACnet MS/TP Network Input Device, Twelve Binary Inputs (Voltage or Dry Contacts), 2.75" Track Mount
$254.28 each
Out of Stock
Get it by Tue, Aug 25 - Tue, Sep 1
Out of Stock
Get it by Tue, Aug 25 - Tue, Sep 1
Compare
Product Image of Enclosed Power Relay, Hi/Lo Voltage Separation, 20 Amp DPDT, with 24 VAC/DC Coil
$111.85 each
Backorder
Get it by Wed, Sep 9 - Wed, Oct 7
Backorder
Get it by Wed, Sep 9 - Wed, Oct 7
Compare
Product Image of Transformer, 40 VA, 24 to 24 Vac, Foot and Single Threaded Hub Mount
$27.75 each
Backorder
Get it by Wed, Sep 9 - Wed, Oct 7
Backorder
Get it by Wed, Sep 9 - Wed, Oct 7
Compare
Product Image of 12-1/8" x 12-1/8" x 6" Metal Housing, NEMA 1
$166.00 each
In Stock
Get 6 by Tue, Aug 11
In Stock
Get 6 by Tue, Aug 11
Compare
Product Image of Enclosed Low Input/Optoisolated Relay, 20A SPST + Override, 24 Vac/dc Power Input, 5-25 Vac/dc Control Input, Hi/Lo Voltage Separation, NEMA 1 Housing
$80.25 each
In Stock
Get 1 by Fri, Aug 14
In Stock
Get 1 by Fri, Aug 14
Compare
Product Image of 600 VA UPS Backup Power Control Center, BACnet MS/TP Network, 12" x 14" x 6" Metal Enclosure
$617.05 each
Out of Stock
Get it by Tue, Aug 25 - Tue, Sep 1
Out of Stock
Get it by Tue, Aug 25 - Tue, Sep 1
Compare
Product Image of Single 75 VA Power Supply, Multi-tap 480/277/240/208/120 to 24 Vac, UL Class 2, Secondary Wires, Metal Enclosure
$223.70 each
Out of Stock
Get it by Tue, Aug 25 - Tue, Sep 1
Out of Stock
Get it by Tue, Aug 25 - Tue, Sep 1
Compare
Product Image of DIN Rail Mount Relay, 10 Amp SPDT w/ Override, 10-30 VAC/DC Coil
$40.45 each
Backorder
Get it by Wed, Sep 9 - Wed, Oct 7
Backorder
Get it by Wed, Sep 9 - Wed, Oct 7
Compare
Product Image of Enclosed Low Input/Optoisolated Relay, 20A DPDT + Override, 120 Vac Power Input, 5-25 Vac/dc Control Input, Hi/Lo Voltage Separation, NEMA 1 Housing
$180.05 each
Out of Stock
Get it by Tue, Aug 25 - Tue, Sep 1
Out of Stock
Get it by Tue, Aug 25 - Tue, Sep 1
Compare
Product Image of Enclosed Power Relays, 20A 2 SPDT, 24 Vac/dc Coil, Hi/Lo Voltage Separation, NEMA 1 Housing
$71.30 each
Out of Stock
Get it by Tue, Aug 25 - Tue, Sep 1
Out of Stock
Get it by Tue, Aug 25 - Tue, Sep 1
Compare
Product Image of Pilot Panel Relay, 15A SPDT w/ 10-30 Vac/DC/208-277 Vac Coil, 4" Track Mount
$31.95 each
In Stock
Get 11 by Fri, Aug 14
In Stock
Get 11 by Fri, Aug 14
Compare
Product Image of Current Switch & Relay Combination, 20A SPST + Override, 24Vac/dc Coil, Adjustable, .50-20A, 4" Track Mount
$103.25 each
In Stock
Get 5 by Tue, Aug 11
In Stock
Get 5 by Tue, Aug 11
Compare
Product Image of DIN Rail Mount DC Power Supply, Single Switching, 100-240 Vac to 24-28 Vdc, 2.5A, Screw Terminals, Class 2
$97.50 each
Out of Stock
Get it by Tue, Aug 25 - Tue, Sep 1
Out of Stock
Get it by Tue, Aug 25 - Tue, Sep 1
Compare
Product Image of Current Switch and Relay Combination, 10A SPDT Relay, 10-30v Coil, Fixed, 0.5-10A
$67.60 each
Backorder
Get it by Wed, Sep 9 - Wed, Oct 7
Backorder
Get it by Wed, Sep 9 - Wed, Oct 7
Compare
Product Image of Enclosed Power Relay, 30A SPST-N/O + SPST-N/C, 24 Vac/dc Coil, Hi/Lo Voltage Separation, NEMA 1 Housing
$113.95 each
Out of Stock
Get it by Tue, Aug 25 - Tue, Sep 1
Out of Stock
Get it by Tue, Aug 25 - Tue, Sep 1
Compare
Product Image of Solid Core, Current Transducer, Analog, 0-5 Vdc Output, 0-50 Amp, Terminals
$31.20 each
Backorder
Get it by Wed, Sep 9 - Wed, Oct 7
Backorder
Get it by Wed, Sep 9 - Wed, Oct 7
Compare
Product Image of Solid Core, Current Transducer, Analog, 0-5 Vdc Output, 0-20 Amp, Terminals
$30.95 each
Backorder
Get it by Wed, Sep 9 - Wed, Oct 7
Backorder
Get it by Wed, Sep 9 - Wed, Oct 7
Resources
FAQs, Manuals & Videos
Articles
More About Functional Devices
Functional Devices, Inc. has been designing and manufacturing quality electronic devices in the USA since 1969. Current product offerings include relays, current sensors, power control, enclosures, power supplies, transformers, and accessories. Functional Devices has established itself as a leader in the HVAC, Building Controls, Energy Management, Energy Savings, Lighting Controls, and Wireless industries.