Power Relays

Shop our selection of Functional Devices RIB (Relay in a Box) power relays—trusted for HVAC, lighting, and building automation control. These enclosed and track-mount relays come pre-wired in NEMA 1 housings and support a variety of coil voltages (12V to 480V) and contact types (SPST, SPDT, DPDT, 3PDT).

Choose models with LED indicators, manual overrides, or time delay functions to simplify installation and diagnostics. Ideal for fans, pumps, lighting, and system integration—whether you're wiring a panel or automating a building. UL listed. Made in the USA.

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Functional Devices

Functional Devices RIBT2401SBC : Enclosed Power Relay, 20 Amp Contact Rating, Relay Contact Type: SPDT + Override, 24 Vac/dc/120 Vac Coil, Hi/Lo Voltage Separation, NEMA 1 Housing

MSRP:

Was:

Now: (Inc. Sales Tax)

MSRP: $89.67

Was:

Now: $44.84
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Functional Devices

Functional Devices RIBT2402B : Enclosed Power Relay, 20 Amp Contact Rating, Relay Contact Type: SPDT, 24 Vac/dc/208-277 Vac Coil, Hi/Lo Voltage Separation, NEMA 1 Housing

MSRP:

Was:

Now: (Inc. Sales Tax)

MSRP: $61.29

Was:

Now: $30.65
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Functional Devices

Functional Devices RIBT2402SB : Enclosed Power Relay, 20 Amp Contact Rating, Relay Contact Type: SPST + Override, 24 Vac/dc/208-277 Vac Coil, Hi/Lo Voltage Separation, NEMA 1 Housing

MSRP:

Was:

Now: (Inc. Sales Tax)

MSRP: $73.93

Was:

Now: $36.97
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Functional Devices

Functional Devices RIBT2402SBC : Enclosed Power Relay, 20 Amp Contact Rating, Relay Contact Type: SPDT + Override, 24 Vac/dc/208-277 Vac Coil, Hi/Lo Voltage Separation, NEMA 1 Housing

MSRP:

Was:

Now: (Inc. Sales Tax)

MSRP: $99.96

Was:

Now: $49.98
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Functional Devices

Functional Devices RIBT242B : Enclosed Power Relays, 20 Amp Contact Rating, Relay Contact Type: 2 SPDT, 24 Vac/dc Coil, Hi/Lo Voltage Separation, NEMA 1 Housing

MSRP:

Was:

Now: (Inc. Sales Tax)

MSRP: $89.20

Was:

Now: $44.60
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Functional Devices

Functional Devices RIBT243P : Enclosed Power Relay, 20 Amp Contact Rating, Relay Contact Type: 3PST-N/O, 24 Vac/dc Coil, Hi/Lo Voltage Separation, NEMA 1 Housing

MSRP:

Was:

Now: (Inc. Sales Tax)

MSRP: $179.45

Was:

Now: $89.73
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Functional Devices

Functional Devices RIBT243P-NC : Enclosed Power Relay, 20 Amp Contact Rating, Relay Contact Type: 3PST-N/C, 24 Vac/dc Coil, Hi/Lo Voltage Separation, NEMA 1 Housing

MSRP:

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Now: (Inc. Sales Tax)

MSRP: $172.42

Was:

Now: $86.21
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Functional Devices

Functional Devices RIBT24B : Enclosed Power Relay, 20 Amp Contact Rating, Relay Contact Type: SPDT, 24 Vac/dc Coil, Hi/Lo Voltage Separation, NEMA 1 Housing

MSRP:

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Now: (Inc. Sales Tax)

MSRP: $54.12

Was:

Now: $27.06
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Functional Devices

Functional Devices RIBT24P : Enclosed Power Relay, 20 Amp Contact Rating, Relay Contact Type: DPDT, 24 Vac/dc Coil, Hi/Lo Voltage Separation, NEMA 1 Housing

MSRP:

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Now: (Inc. Sales Tax)

MSRP: $131.50

Was:

Now: $65.75
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Functional Devices

Functional Devices RIBT24Z : Enclosed Power Relay, 30 Amp Contact Rating, Relay Contact Type: SPST-N/O + SPST-N/C, 24 Vac/dc Coil, Hi/Lo Voltage Separation, NEMA 1 Housing

MSRP:

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Now: (Inc. Sales Tax)

MSRP: $133.23

Was:

Now: $66.62
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Functional Devices

Functional Devices RIBTD2401B : Time Delay Relay, 20 Amp SPDT, 24 Vac/dc/120 Vac Coil, NEMA 1 Housing

MSRP:

Was:

Now: (Inc. Sales Tax)

MSRP: $139.07

Was:

Now: $69.54

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