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Access Door (4)
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Relay (177)
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Functional Devices

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Product Image of Pluggable Replacement Relays for RIBR24D Series (Pack of 3)
$16.15 each
In Stock
Get 8 by Fri, Sep 25
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Product Image of Switch, 5A, 30 Vac/dc, 3 Position Maintained, On/Off/On, LED Indicator, Red Housing
$22.45 each
Out of Stock
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Product Image of 24.5" H x 12.5" W x 6.5" D Metal Enclosure with SP3803L Sub-Panel, NEMA 1
$252.90 each
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Product Image of Enclosed Low Input/Optoisolated Relay, 20A SPDT, 208-277 Vac Power Input, 5-25 Vac/dc Control Input, Hi/Lo Voltage Separation, NEMA 1 Housing
$65.75 each
Out of Stock
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Product Image of Enclosed Polarized Relay, 10A SPDT w/ 12 Vac/DC Coil, Red Housing
$53.70 each
Out of Stock
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Product Image of 24-1/2" x 12-1/2" x 6-1/2" Metal Housing, NEMA 1 w/ SP3804S Sub-Panel
$303.35 each
Out of Stock
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Product Image of Enclosed Low Input/Optoisolated Relay, 10A SPDT, 10-30 Vac/dc Power Input, 5-25 Vac/dc Control Input, Hi/Lo Voltage Separation, NEMA 1 Housing
$48.60 each
Out of Stock
Get it by Thu, Oct 8 - Thu, Oct 15
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Product Image of Enclosed Self-Powered Split Core Current Transformer with 333 mV Output (25A)
$143.60 each
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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
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Product Image of Enclosed Pilot Relay, 10 Amp SPDT, with 10-30 VAC/DC/120 VAC Coil - 100 Pack
$1,875.00 each
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Product Image of Current Transformer Integrator, Rogowski Coil, 2 Phase, 333mV Output, 70mV, DIN Rail Moun
$514.01 each
Out of Stock
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Product Image of Panel Manual Analog Override Switch + Monitor, 24 Vac/dc Power Input, 2-3/4" Track Mount
$96.25 each
Out of Stock
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Product Image of Enclosed Dry Contact Relay, 20A SPST-N/C + Override, Class 2 Dry Contact Input w/ 120 Vac Power Input, NEMA 1 Housing
$55.90 each
Out of Stock
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Product Image of Enclosed Power Relay 20A SPST-N/C + Override w/ 24 Vac/DC/208-277 Vac Coil, NEMA 1 Housing
$60.55 each
Out of Stock
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Product Image of Power Meter Kit, 120-277 Vac, 3-Phase, Disconnect Switch, Fuses and Fuse Holder
$994.50 each
Out of Stock
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Product Image of Enclosed Low Input/Optoisolated Relay, 20A DPDT, 120 Vac/dc Power Input, 5-25 Vac/dc Control Input, Hi/Lo Voltage Separation, NEMA 1 Housing
$143.40 each
Out of Stock
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Product Image of Transformer, 96VA, 480/277/240/208/120 to 24 Vac, Circuit Breaker, Foot and Dual Threaded Hub Mount
$58.70 each
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Product Image of 4-1/4" x 7" x 2" Plastic Housing, NEMA 4/4X, 3/4" MNPT Nipple, Transparent Lid
$51.35 each
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Product Image of 850VA UPS Backup Power Control Center, Status Contacts, 14" x 16" x 6" Metal Enclosure
$846.55 each
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Product Image of Enclosed Pilot Relay, 10A SPDT w/ 10-30 VDC Limited Inrush Coil, Red Housing
$31.70 each
Out of Stock
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Product Image of Enclosed Dual 100VA UL Class 2 Power Supply, 120 Vac to 24 Vac & 24 VDC
$506.60 each
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Product Image of DIN Rail Mount DC Power Supply Class 2 Relay Contact, Single Switching & Screw Terminals, 100-240 Vac to 24-28 Vdc, 10 Amp
$225.65 each
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Product Image of DIN Rail Mount DC Power Supply, Single Switching, 100-240 Vac to 24-28 Vdc, 3.8A, Screw Terminals
$125.05 each
Out of Stock
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Product Image of Power Panel Relay, 10A DPDT w/ 24 Vac/DC/208-277 Vac Coil, 4" Track Mount
$44.25 each
Out of Stock
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Product Image of 200 VA Power Supply, Five 40 VA Class 2 Outputs, 480/347/277/240/120 Vac to 24 Vac, Polymetal Subpanel Pre-Mounted
$375.65 each
Out of Stock
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Product Image of Enclosed Dry Contact Relay, 10A SPDT, Class 2 Dry Contact Input, 120-277 Vac Power Input Coil, NEMA 4X Clear Housing
$51.50 each
Out of Stock
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Product Image of 25" x 25" x 9-1/2" Metal Housing, NEMA 1 w/ Key Latch
$562.05 each
Out of Stock
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Product Image of 2.75" Track Mount Relay 15 Amp SPST & Override, Polarized w/ 24 VAC/DC Coil
$31.32 each
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Product Image of Switch, 20A, 2 Position Maintained, On/Off, 2 Wires, NEMA 1 Housing
$21.80 each
Out of Stock
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Product Image of 4" x 24" AdapTrack Mounting DIN Rail Track
$19.65 each
Out of Stock
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Product Image of Enclosed Polarized Relay, 10A SPDT-N/C + Override w/ 12 Vac/DC Coil, Red Housing
$36.30 each
Out of Stock
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Product Image of Switch, 20A, 3 Position Maintained, Center Off, 3 Wires, NEMA 1 Housing
$21.05 each
Out of Stock
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Product Image of Split Core, Adjustable Current Switch, 0.75-150 Amp, Terminal
$55.00 each
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Product Image of 4-1/4" x 7" x 2" Plastic Housing w/ 4" x 4" Mounting Track, NEMA 1, 3/4" MNPT Nipple, Gray Lid
$39.25 each
Out of Stock
Get it by Thu, Oct 8 - Thu, Oct 15
Out of Stock
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Product Image of Enclosed Pilot Relay, Hi/Lo Vertical Separation, 15 Amp SPDT, with 10-30 VAC/DC/120 VAC Coil
$35.25 each
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Product Image of Transducer & Relay Combination, 20A 3PST-N/O, 24 Vac/dc Coil, Analog, 0-20A, 0-10 Vdc Output, NEMA 1 Housing
$170.70 each
Out of Stock
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Product Image of Enclosed Self-Powered Split Core Current Transformer with 333 mV Output (400A)
$148.75 each
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Product Image of 2.75" Track Mount Pilot Relay, 15 Amp SPDT, with 12 VAC/DC Coil
$25.43 each
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Product Image of 36" x 25" x 9-1/2" Metal Housing, NEMA 1 w/ Key Latch
$729.70 each
Out of Stock
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Product Image of Single 40 VA Power Supply, UL Class 2, Secondary Wires, (120 Vac to 24 Vac Enclosure)
$173.85 each
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Product Image of Power Panel Relay, 30A 3PDT w/ 208-277 Vac Coil, 4" Track Mount
$144.10 each
Out of Stock
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Product Image of Split Core, Current Transducer, Multi-Range (0-20 Amp, 50 Amp, 100 Amp), 0-5 Vdc Output, Terminals
$59.90 each
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Product Image of Transformer, 20VA, 208 to 24 Vac, Foot and Dual Threaded Hub Mount
$21.00 each
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Product Image of Enclosed Single DC Power Supply, 120 Vac to 24 Vdc at 2.5 Amp
$315.10 each
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Product Image of Snap-On Pilot Panel Relay, 10A SPDT w/ 12 Vac/DC Coil, DIN Rail Mountable, 2-3/4" Track Mount
$36.70 each
Out of Stock
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Product Image of 19.00" H x 11.75" W x 0.13" Polymetal Sub-Panel, For Use with MH3800
$139.45 each
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Product Image of Enclosed Power Relay, 20A 3PST-N/C, 24 Vac/dc Coil, Hi/Lo Voltage Separation, NEMA 1 Housing
$161.90 each
Out of Stock
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Product Image of BACnet Network Relay 20 Amp SPDT w/ 24 VAC/DC Power Input
$283.76 each
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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.