switching relays
Pneumatic HVAC switching relays. For controlling HVAC actuators, dampers, and valves in a pneumatic control system, using an electric control signal. Shop now!
View Details
243-0001 | Switching Relay, Pneumatic 3-Way, Adj Changeover, 1 / 8" NPT Thread Ports, 9PSI | Siemens
Brand: Siemens
SKU: 243-0001
View Details
243-0018 | Signal Selector, Highest Pressure, Pneumatic, DA, Dual Input, Single Output | Siemens
Brand: Siemens
SKU: 243-0018
View Details
243-0024 | Reverse Acting Relay, Pneumatic, Field Adjustable Spring Range | Siemens
Brand: Siemens
SKU: 243-0024
View Details
141-0575 | Airflow Switch, Differential Static Pressure, SPST, Manual Reset, 1" to 12" WC | Siemens
Brand: Siemens
SKU: 141-0575
View Details
141-0574 | Airflow Switch, Differential Static Pressure, SPDT, Auto Reset, 0.05-1.0 in. WC | Siemens
Brand: Siemens
SKU: 141-0574
View Details
134-1460 | Pressure Electric Switch, Heavy-Duty, SPDT, Snap-Acting, NC, Fixed Diff 2.0 psi | Siemens
Brand: Siemens
SKU: 134-1460
View Details
243-0020 | Signal Selector, Lowest Pressure, Pneumatic, DA, Dual Input, Single Output | Siemens
Brand: Siemens
SKU: 243-0020
View Details
243-0009 | Multi-Purpose Relay, Pneumatic, Heavy Duty, Two-Valve Design, DA and RA | Siemens
Brand: Siemens
SKU: 243-0009
View Details
141-0518 | Airflow Switch, Differential Static Pressure, SPDT, Auto Reset, 1 to 12" WC | Siemens
Brand: Siemens
SKU: 141-0518
View Details
786-0610 | Selector Switch, Commercial, 3-Position | Siemens
Brand: Siemens
SKU: 786-0610
View Details
786-0600 | Selector Switch, Commercial, 2-Position, Click stop for positive positioning | Siemens
Brand: Siemens
SKU: 786-0600
View Details
243-0019 | Signal Selector, Lowest / Highest, Pneumatic, DA, Six-Input, Dual Output | Siemens
Brand: Siemens
SKU: 243-0019
View Details
134-1451 | Pressure Electric Switch, Heavy-Duty, DPST, Snap-Acting, 1.5 to 10 psi | Siemens
Brand: Siemens
SKU: 134-1451
View Details
134-1450 | Pressure Electric Switch, DPST (NO) Switch Action | Siemens
Brand: Siemens
SKU: 134-1450
View Details
243-0011 | Analog Relay, Pneumatic, Heavy Duty, Multi-Function, 1 / 8" NPT Ports | Siemens
Brand: Siemens
SKU: 243-0011
View Details
243-0010 | Balance-Retard Relay, Pneumatic, Heavy Duty, Gradual-Acting, DA and RA | Siemens
Brand: Siemens
SKU: 243-0010
Committed to customer satisfaction
as experts in Switching Relays
Recently Viewed
Popular Products
View all →EP2100S | EP | Analog In | 3-15/0-20psi | Veris
Brand: Veris
SKU: EP2100SSCE-20H1608LP | NEMA 3R, 12, 4 | Nema 4 LP Enclosure, 20H x 16W x 8D | Saginaw
Brand: Saginaw
SKU: SCE-20H1608LPSCE-24N2406LP+SCE-24N24MPP | NEMA1 | 24H x 24W x 6D | Subpanel: Perforated | Knockouts: No | Keyed: No | Saginaw
Brand: Saginaw
SKU: SCE-24N2406LP+SCE-24N24MPPQFM3160 | Duct RH and Temp Sensor, 2 percent (high) accuracy, RH: 0-10 Vdc, T: 0-10 Vdc | Siemens
Brand: Siemens
SKU: QFM3160VG1275CP+943GGA | 1" 2W BALL VALVE 18.7CV; SS TRIM; SWEAT END CONN;PROP; SP CLOSED; W/O SW | Johnson Controls
Brand: Johnson Controls
SKU: VG1275CP+943GGAGRD221.1U | Damper Actuator | Spring Return | 120 VAC | On/Off | 30 lb-in | Siemens
Brand: Siemens
SKU: GRD221.1U