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Control Relays

Ensure consistent performance and reliable operation in your electrical systems with our wide selection of control relays. Designed to provide safe and accurate switching, these essential components are used in motor control, automation, HVAC systems, and industrial machinery. Our offering includes general-purpose relays, timing relays, solid-state relays, and safety relays, available in multiple coil voltages and contact configurations to match your application. Built with durable materials and trusted designs, these relays deliver dependable performance while helping to protect equipment and extend system life. Whether you’re managing simple control circuits or complex automation systems, our control relays offer the reliability, flexibility, and efficiency professionals count on. With products from leading brands, it’s easy to find the right relay for your project.

: ControlAir (200)
Dwyer (366)

566 items

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Dwyer - SSRL240DC25 Sol State Relay

Dwyer - SSRL240DC25 Sol State Relay

MPN:SSRL240DC25

High Reliability Solid State Relay, 1-Phase, 24 Vac to 280 Vac Line Voltage, 25 A, 3 Vdc to 32 Vdc O/P, DC Control Signal, Screw Mount, SSRL Series, Each

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$44.45

Should ship between 04 Sep and 11 Sep

Subject to factory lead times

QTY:

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Dwyer - CH-50 4 Place Block For Nb2 Head

Dwyer - CH-50 4 Place Block For Nb2 Head

MPN:CH-50

Terminal Block for NB2 Type Connection Head, 4 Terminals, Ceramic Block with Nickel Plated Brass Terminals, 14 AWG, White, CH Series, Each

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$12.79

Should ship between 22 May and 29 May

Subject to factory lead times

QTY:

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Dwyer - DRTB-RAIL-8 Pre-Cut 35X7.5 Din Rail 6.75"

Dwyer - DRTB-RAIL-8 Pre-Cut 35X7.5 Din Rail 6.75"

MPN:DRTB-RAIL-8

Pre-Cut DIN Rail for 8 " Sub-Panel Width, Perforated Steel with Electrolytic Zinc Plating, DRTB-RAIL Series, Each

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$10.41

Should ship between 22 May and 29 May

Subject to factory lead times

QTY:

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Dwyer - BS10A Barrier Strip Rohs

Dwyer - BS10A Barrier Strip Rohs

MPN:BS10A

Barrier Strip, 10 Terminals, 16 AWG to 24 AWG, Standard, Each

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$22.19

Should ship between 21 Aug and 28 Aug

Subject to factory lead times

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Dwyer - AVK-4 Ft-Term-Blk 10Awg 30A 600V

Dwyer - AVK-4 Ft-Term-Blk 10Awg 30A 600V

MPN:AVK-4

Feed-Through Terminal Block, DIN Rail, 30 A, 600 Vac, 26 AWG to 10 AWG, 6 mm, Gray, 10 mm (0.39 "), AVK Series, Each

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$1.43

Should ship between 22 May and 29 May

Subject to factory lead times

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Dwyer - DRTB-RAIL-3575-1 Din Rail 35X7.5Mm Slotted 1M

Dwyer - DRTB-RAIL-3575-1 Din Rail 35X7.5Mm Slotted 1M

MPN:DRTB-RAIL-3575-1

Slotted DIN Rail 1.4 " x 0.3 " x 3.3 ', Perforated Steel with Electrolytic Zinc Plating, DRTB-RAIL Series, Each

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$6.70

Should ship between 22 May and 29 May

Subject to factory lead times

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Dwyer - AVK-2.5 Ft-Term-Blk 12Awg 20A 600V

Dwyer - AVK-2.5 Ft-Term-Blk 12Awg 20A 600V

MPN:AVK-2.5

Feed-Through Terminal Block, DIN Rail, 20 A, 600 Vac, 26 AWG to 12 AWG, 5 mm, Gray, 10 mm (0.39 "), AVK Series, Each

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$1.25

Should ship between 22 May and 29 May

Subject to factory lead times

QTY:

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Dwyer - SSRL240DC10 Solid State Relays

Dwyer - SSRL240DC10 Solid State Relays

MPN:SSRL240DC10

High Reliability Solid State Relay, 1-Phase, 24 Vac to 280 Vac Line Voltage, 10 A, 3 Vdc to 32 Vdc O/P, DC Control Signal, Screw Mount, SSRL Series, Each

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$38.18

Should ship between 04 Sep and 11 Sep

Subject to factory lead times

QTY:

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Dwyer - PUK-3 Tpl_Deck Term-Blk24A12Awg/G

Dwyer - PUK-3 Tpl_Deck Term-Blk24A12Awg/G

MPN:PUK-3

Feed Through Terminal Block, Multi-level, 24 A, 300 Vac, 24 AWG to 12 AWG, 6 mm (0.236 "), Gray, 9 mm (0.35 "), Three level feed through Terminal Block, PUK Series, Each

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$5.29

Should ship between 22 May and 29 May

Subject to factory lead times

QTY:

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Dwyer - CG-7211981 M20 Locknut Lt. Gray Pa

Dwyer - CG-7211981 M20 Locknut Lt. Gray Pa

MPN:CG-7211981

Locknut, Polyamide, Gray, M20, CG Series, Each

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$1.08

Should ship between 22 May and 29 May

Subject to factory lead times

QTY:

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Dwyer - ASK-2LD-DC Fuse Term-Blk6.3A 24Vdc #8 Led

Dwyer - ASK-2LD-DC Fuse Term-Blk6.3A 24Vdc #8 Led

MPN:ASK-2LD-DC

Fuse Terminal Block with LED Blown Fuse Indicator, 6.3 A, 24 Vdc, 26 AWG to 8 AWG, 8 mm (0.315 "), Gray, 12 mm (0.47 "), Fuse Size 5 mm x 20 mm & 5 x 25 mm, ASK T-Block Series, Each

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$9.74

Should ship between 22 May and 29 May

Subject to factory lead times

QTY:

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Dwyer - ASK-2S Fuse Term-Blk 6.3A 300V 8Awg

Dwyer - ASK-2S Fuse Term-Blk 6.3A 300V 8Awg

MPN:ASK-2S

Fuse Terminal Block, 6.3 A, 300 Vac, 26 AWG to 8 AWG, 8 mm (0.315 "), Gray, 12 mm (0.47 "), Fuse Size 5 mm x 20 mm & 5 mm x 25 mm, ASK T-Block Series, Each

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$5.87

Should ship between 22 May and 29 May

Subject to factory lead times

QTY:

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Dwyer - SSRL240DC25 Sol State Relay

Dwyer - SSRL240DC25 Sol State Relay

MPN:SSRL240DC25

High Reliability Solid State Relay, 1-Phase, 24 Vac to 280 Vac Line Voltage, 25 A, 3 Vdc to 32 Vdc O/P, DC Control Signal, Screw Mount, SSRL Series, Each

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$44.45

Should ship between 04 Sep and 11 Sep

Subject to factory lead times

QTY:

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Dwyer - CH-50 4 Place Block For Nb2 Head

Dwyer - CH-50 4 Place Block For Nb2 Head

MPN:CH-50

Terminal Block for NB2 Type Connection Head, 4 Terminals, Ceramic Block with Nickel Plated Brass Terminals, 14 AWG, White, CH Series, Each

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$12.79

Should ship between 22 May and 29 May

Subject to factory lead times

QTY:

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Dwyer - DRTB-RAIL-8 Pre-Cut 35X7.5 Din Rail 6.75"

Dwyer - DRTB-RAIL-8 Pre-Cut 35X7.5 Din Rail 6.75"

MPN:DRTB-RAIL-8

Pre-Cut DIN Rail for 8 " Sub-Panel Width, Perforated Steel with Electrolytic Zinc Plating, DRTB-RAIL Series, Each

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$10.41

Should ship between 22 May and 29 May

Subject to factory lead times

QTY:

Compare

Dwyer - BS10A Barrier Strip Rohs

Dwyer - BS10A Barrier Strip Rohs

MPN:BS10A

Barrier Strip, 10 Terminals, 16 AWG to 24 AWG, Standard, Each

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$22.19

Should ship between 21 Aug and 28 Aug

Subject to factory lead times

QTY:

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Dwyer - AVK-4 Ft-Term-Blk 10Awg 30A 600V

Dwyer - AVK-4 Ft-Term-Blk 10Awg 30A 600V

MPN:AVK-4

Feed-Through Terminal Block, DIN Rail, 30 A, 600 Vac, 26 AWG to 10 AWG, 6 mm, Gray, 10 mm (0.39 "), AVK Series, Each

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$1.43

Should ship between 22 May and 29 May

Subject to factory lead times

QTY:

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Dwyer - DRTB-RAIL-3575-1 Din Rail 35X7.5Mm Slotted 1M

Dwyer - DRTB-RAIL-3575-1 Din Rail 35X7.5Mm Slotted 1M

MPN:DRTB-RAIL-3575-1

Slotted DIN Rail 1.4 " x 0.3 " x 3.3 ', Perforated Steel with Electrolytic Zinc Plating, DRTB-RAIL Series, Each

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$6.70

Should ship between 22 May and 29 May

Subject to factory lead times

QTY:

Compare

Dwyer - AVK-2.5 Ft-Term-Blk 12Awg 20A 600V

Dwyer - AVK-2.5 Ft-Term-Blk 12Awg 20A 600V

MPN:AVK-2.5

Feed-Through Terminal Block, DIN Rail, 20 A, 600 Vac, 26 AWG to 12 AWG, 5 mm, Gray, 10 mm (0.39 "), AVK Series, Each

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$1.25

Should ship between 22 May and 29 May

Subject to factory lead times

QTY:

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Dwyer - SSRL240DC10 Solid State Relays

Dwyer - SSRL240DC10 Solid State Relays

MPN:SSRL240DC10

High Reliability Solid State Relay, 1-Phase, 24 Vac to 280 Vac Line Voltage, 10 A, 3 Vdc to 32 Vdc O/P, DC Control Signal, Screw Mount, SSRL Series, Each

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$38.18

Should ship between 04 Sep and 11 Sep

Subject to factory lead times

QTY:

Compare

Dwyer - PUK-3 Tpl_Deck Term-Blk24A12Awg/G

Dwyer - PUK-3 Tpl_Deck Term-Blk24A12Awg/G

MPN:PUK-3

Feed Through Terminal Block, Multi-level, 24 A, 300 Vac, 24 AWG to 12 AWG, 6 mm (0.236 "), Gray, 9 mm (0.35 "), Three level feed through Terminal Block, PUK Series, Each

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$5.29

Should ship between 22 May and 29 May

Subject to factory lead times

QTY:

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Dwyer - CG-7211981 M20 Locknut Lt. Gray Pa

Dwyer - CG-7211981 M20 Locknut Lt. Gray Pa

MPN:CG-7211981

Locknut, Polyamide, Gray, M20, CG Series, Each

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$1.08

Should ship between 22 May and 29 May

Subject to factory lead times

QTY:

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Dwyer - ASK-2LD-DC Fuse Term-Blk6.3A 24Vdc #8 Led

Dwyer - ASK-2LD-DC Fuse Term-Blk6.3A 24Vdc #8 Led

MPN:ASK-2LD-DC

Fuse Terminal Block with LED Blown Fuse Indicator, 6.3 A, 24 Vdc, 26 AWG to 8 AWG, 8 mm (0.315 "), Gray, 12 mm (0.47 "), Fuse Size 5 mm x 20 mm & 5 x 25 mm, ASK T-Block Series, Each

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$9.74

Should ship between 22 May and 29 May

Subject to factory lead times

QTY:

Compare

Dwyer - ASK-2S Fuse Term-Blk 6.3A 300V 8Awg

Dwyer - ASK-2S Fuse Term-Blk 6.3A 300V 8Awg

MPN:ASK-2S

Fuse Terminal Block, 6.3 A, 300 Vac, 26 AWG to 8 AWG, 8 mm (0.315 "), Gray, 12 mm (0.47 "), Fuse Size 5 mm x 20 mm & 5 mm x 25 mm, ASK T-Block Series, Each

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$5.87

Should ship between 22 May and 29 May

Subject to factory lead times

QTY:

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About NISCO Inc.

NISCO offers a wide range of pressure gauges & instruments, diaphragm seals, thermometers, valves, and flow control products to the industrial and commercial marketplaces, as well as other resellers like ourselves. We can also provide other value-added services such as gauge repair, NIST traceable calibration, diaphragm seal assembly, and valve automation. NISCO takes pride in providing extensive product knowledge, helpful customer service, and market competitive pricing to help fit whatever need you may have because it is our goal to be regarded by our customers as the best supplier of pressure, temperature, and flow control products.

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