Product Details
The YK-03L Low Pressure Switch is a compact capsule safety control designed for direct mounting within air conditioning and commercial refrigeration systems. Engineered with an automatic reset mechanism, this switch protects compressors against loss of charge and low suction pressure by opening the electrical circuit at 5 ± 4 PSI (~0.34 bar) and automatically resetting when pressure rises back to 20 ± 7 PSI (~1.38 bar). Featuring a 1/4in female flare brass connection with an internal valve depressor and pre-wired insulated leads, it provides reliable, factory-calibrated pressure safety for refrigeration engineers and OEMs.
Technical Specifications
| Model Series | YK-03L |
| Part Number | 018-005D020G |
| Component Type | Low Pressure Switch (Capsule Type) |
| Reset Action | Auto Reset (Automatic) |
| Cut-Out Pressure (OPEN) | 5 ± 4 PSI (~0.34 bar) |
| Cut-In Pressure (CLOSE) | 20 ± 7 PSI (~1.38 bar) |
| Electrical Rating | 250V AC, 6A |
| Pressure Connection | 1/4in Female Flare (SAE Thread) |
| Fitting Construction | Brass Coupling with Internal Valve Depressor |
| Wiring Type | Pre-wired Insulated Flying Leads |
| Media Compatibility | Standard Commercial Refrigerants and Synthetic/Mineral Oils |