Mechanical pressure switch LF08M

relativeNONC

Product description
LF08M is a manual reset pressure switch. The maximum pressure set point reaches 942.5 PSI (approx. 6.5 MPa). The switch can be configured normally open (NO) or normally closed (NC) and has a maximum rated current up to 6 A (AC). It is designed for protection and local pressure control in refrigeration, HVAC and industrial systems.

Applications

• Refrigeration units and cold-chain equipment
• Air conditioning and HVAC systems
• Air compressors
• Oil pumps and hydraulic units
• Other industrial equipment requiring pressure control/protection

Parameters
Pressure setting range (gauge): 0.02 MPa to 6.5 MPa (low pressure ≤ 1.0 MPa; high pressure > 1.0 MPa).
Operating pressure / Tolerance / Withstand maximum pressure:
0.2 ≤ p < 0.6 MPa — ±0.03 MPa — Withstand max: 1.5 MPa
0.6 ≤ p < 1.0 MPa — ±0.05 MPa — Withstand max: 2.0 MPa
1.0 ≤ p < 2.0 MPa — ±0.07 MPa — Withstand max: 3.0 MPa
2.0 ≤ p < 3.0 MPa — ±0.10 MPa — Withstand max: 4.0 MPa
3.0 ≤ p < 4.0 MPa — ±0.15 MPa — Withstand max: 5.5 MPa
4.0 ≤ p < 5.0 MPa — ±0.20 MPa — Withstand max: 6.5 MPa
5.0 ≤ p < 6.5 MPa — ±0.25 MPa — Withstand max: 8.0 MPa
Burst pressure (gauge): 34.5 MPa × 1 min, no damage or leakage.
Operating temperature (ambient): Low pressure -40℃ to 65℃; High pressure -40℃ to 120℃.
Operating temperature (medium): Low pressure -40℃ to 80℃; High pressure -40℃ to 135℃.

Electrical parameters
24–250 VAC / 0.02–6 A; 8–36 VDC / 0.02–3 A.

Compatible media
Air, water, oil, lubricants, refrigerants and similar hydrocarbons.

Service life & protection
Mechanical life: 100,000 cycles. Electrical life: 30,000 cycles (UL, CE). Ingress protection: IP67.

Documents & Drawings
Datasheet and dimensional drawing available in PDF format.

Technical specifications

• Model: LF08M
• Maximum pressure set point: 942.5 PSI (approx. 6.5 MPa)
• Pressure setting range: 0.02 MPa to 6.5 MPa
• Switch type: Manual reset; NO or NC
• Maximum rated current: up to 6 A (AC); up to 3 A (DC depending on voltage)
• Electrical parameters: 24–250 VAC (0.02–6 A); 8–36 VDC (0.02–3 A)
• Burst pressure: 34.5 MPa × 1 min (no damage/leakage)
• Operating temperature (ambient/medium): see parameters above
• Service life: Mechanical 100,000 cycles; Electrical 30,000 cycles (UL, CE)
• Ingress protection: IP67
• Compatible media: Air, water, oil, lubricants, refrigerants
• Brand: LEFOO