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LF 12 is three phase pressure switch, used for air compressor and water pump to regulate pressure between two preset values. It is available with an unloader value, which prevents compressor from starting under load and an On-Off knob for manual cut off the compressor or pump. A four port manifold style is available, which makes easy mounting of other partsfor air compressor, like valve and gauge. LF12 is available with thermal relay for overload protection. The relay will cut of the motor power timely to prevent the motor from burning when motor is overloaded.
Medium | water, air | Operating temperature | -40~82℃(fluid) |
Contact | Multi-pole single-throw(normally closed) | Protection class | P54 |
Electrical rating | Single-phase 120VAC/10A; 230VAC/10A | Cable Specifications | 10AWG-14AWG |
Contact material | Static contact:silver alloy; moving contact: silver alloy | ||
Three-phase 120VAC/10A; 230VAC/10A; 400VAC/7.5A; 400VAC/11A; 500VAC/6A; 500VAC/9A; 690VAC/4.5A; 690VAC/6.5A | Appendix | Chinese/English manual | |
Air tightness | No leakage when the switch is held at 1.2 times the maximum working pressure for one minute | ||
Usage frequency | It takes 30 minutes to cool down for the thermal relay to start | ||
Motor cycle frequency more than 5 minutes |
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