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146 Series Pressure Control Switch
Brand: Qualitrol Company
Designed to provide operating control, limit or alarm functions for transformers and load tap changers.
Contacts can be factory set or adjusted as needed.
The snap-action switch automatically resets when pressure returns to pre-set conditions.
Pressure and/or vacuum switches can be combined on a common manifold and protected by optional enclosure.
Optional pressure indicators (dial gauges) are available on select models.
Features- Reliable alarming for rising or falling pressure
- Compact design is easy to install
- Numerous configurations available for many applications
- Available with cut off valve for field testing of switches
- Tested and certified to be reliable
- Reliable snap-action switch resets automatically – no manual reset is required
- Single pole double throw (SPDT) switches are UL and CSA listed
- Switches may be applied on systems using steam, air and other non-combustible gases
- Pressure settings can be factory-set and/or adjustable by equipment manufacturer on select models
- The high electrical rating of the snap-action switch often saves on the need for expensive relays
Specifications
Brand
Electrical Connectors Type
- Screw Terminal
Enclosure
- IP11 (NEMA 2)
Housing & Cover
- Powder-Coated Aluminum
Mounting
- Center Back Vertical Mounting
Number of Switches
- 1
Pressure Connection Material
- Brass
Standard Operating Temperature
- -29° to 74° C (-20° to 165° F)
Switch Rating
- 1/2 A at 125 Vdc, Resistive
- 1/4 A at 250 Vdc, Resistive
- 15 A at 115, 250 Vac
Switch Type
- SPDT
Tank Connection
- 1/4”-18 NPT
Vibration Resistance
- Not Affected when Subjected to 60 Hz or Whole Multiples Thereof