This pneumatic air compressor pressure switch is a range and differential controller that opens or closes a circuit when pressure goes above or below the values you set. It comes as SNS-C103, C106, C110, C120 or C130X, rated 3kg, 6kg, 10kg, 20kg and 30kg, with a 7/16 special thread (adapter) and a 1/4 external thread, for air, oil, water and steam lines.
Features and benefits:
- Five pressure ratings from 3kg to 30kg - pick the model that matches the pressure of your tank or line
- Adjustable high and low set points - the gap between them is the minimum starting pressure, so you decide how often the compressor cycles
- Pure copper terminals - suited to AC220V and below
- Range and DIFF. indicators on the scale - see the two settings you are adjusting
- AUTO RESET marked on the label - the switch resets itself as pressure returns to the set band
- Suitable for air, oil, water and steam - one switch type across several fluid lines
- 80mm wide and 49mm high body - check these dimensions against the space in your control housing
Applications:
- Starting and stopping an air compressor from tank pressure
- Pressure control on pneumatic, hydraulic and water lines
- Replacing a worn pressure controller in a workshop
- Over and low pressure cut-out in machine control circuits
Note: Isolate the supply and release all pressure before fitting or adjusting. The switch is for AC220V and below only. Stay under the maximum working pressure of your chosen model, and match the model rating to your system before you order.
Adjustment range, SNS-130: -50 cm Hg to 3.0 Mpa. Maximum working pressure: 1.1 Mpa (SNS-103); 1.65 Mpa (SNS-106, SNS-110); 4.0 Mpa (SNS-120, SNS-130). Set value Off(on) / On(off), SNS-103: 0.05 Mpa / 0.15 Mpa. Set value Off(on) / On(off), SNS-106: 0.1 Mpa / 0.3 Mpa. Set value Off(on) / On(off), SNS-110: 0.4 Mpa / 0.6 Mpa. Set value Off(on) / On(off), SNS-120: 1.5 Mpa / 1.2 Mpa. Set value Off(on) / On(off), SNS-130: 2.0 Mpa / 1.5 Mpa. Thread: 7/16 special thread (about 11mm), adapter; 1/4 external thread. Applicable media: Air, oil, water, steam. Electrical rating: AC220V and below. Models: SNS-C103 (3kg), SNS-C106 (6kg), SNS-C110 (10kg), SNS-C120 (20kg), SNS-C130X (30kg). Maximum pressure: 3, 6, 10, 20 and 30 kgf/cm² by model. Adjustment range, SNS-103: -50 cm Hg to 0.3 Mpa. Adjustment range, SNS-106: -50 cm Hg to 0.6 Mpa. Adjustment range, SNS-110: -50 cm Hg to 1.0 Mpa. Adjustment range, SNS-120: -50 cm Hg to 2.0 Mpa. Body size: 80mm wide, 49mm high. Terminal material: Pure copper. Working principle: Set high and low pressure; the circuit is disconnected on over or low pressure. Pressure differential: Difference between high and reduced pressure equals the minimum starting pressure. Output pressure, SNS-103: 0.035 to 0.2 Mpa. Output pressure, SNS-106: 0.06 to 0.4 Mpa. Output pressure, SNS-110: 0.1 to 0.3 Mpa. Output pressure, SNS-120: 0.3 to 0.5 Mpa. Output pressure, SNS-130: 0.3 to 1.0 Mpa. Scale markings: RANGE and DIFF. indicators, AUTO RESET label. Q: How does an air compressor pressure switch work? A: You set a high and a low pressure, and the switch opens the circuit when pressure goes over the high value and closes it again when pressure drops to the low value. The gap between the two is the minimum starting pressure.. Q: How do I adjust the pressure switch on an air compressor? A: The scale carries RANGE and DIFF. markings: RANGE moves the working pressure and DIFF. changes the gap between stop and start. Isolate the power and release the air before you turn anything.. Q: Which model do I need for a 10kg system? A: Choose SNS-C110, rated 10kg with an adjustment range up to 1.0 Mpa. Pick the model whose rating and maximum working pressure sit above your system's normal pressure.. Q: Can this switch be used on water or oil lines? A: Yes, the applicable media are air, oil, water and steam.. Q: What thread does it have? A: A 7/16 special thread of about 11mm (adapter), plus a 1/4 external thread..