Universal Air Pressure Switch Waterproof 30Pa 60Pa For Boiler
A4s Pressure Switches
The A4s is a universal air pressure switch for the boiler and water heater, which pressure is 39 Pa for ON, and 60Pa for OFF.
Universal Air Pressure Switch Features
The A4s is a universal air pressure switch for the boiler and water heater, which pressure is 39 Pa for ON, and 60Pa for OFF. Unlike the traditional pressure switch, it can reduce temperature error and control it in a small range.
Meanwhile, the A4S can work well in extreme humidity or extremely cold environments, which is also better than the previous generation. So you can use it with satisfaction in the device.
Besides, the AS4 series is not only high precision but also sealed structure in a positive/ negative chamber, which is dustproof and waterproof. For more pressure & flow products information, welcome to visit our product page.
Standard Air Pressure Switch Specification
| Model Number | A4S Standard Air Pressure Switch |
| Working Medium | Air or Gas tail gas |
| Circuitry | SPST-NO, SPST-NC, SPDT |
| Rating | 1(0.5)A @ 24VDC (125/250 VAC) |
| Initial Resistance | ≤100mΩ |
| Withstand Voltage | 3000Pa (0.5Pso) |
| Mechanical Cycles | 1000000 cycles |
| Electrical Cycles | 250000 cycles |
| Working Temperature | 40T110 |
