Herga’s Pressure Switch family is a complete portfolio of miniature and mid-size pneumatic switches designed for precise, repeatable operation across low, medium, and differential pressure ranges.
With models spanning from the HPS-500-G and HPS-600-G miniature series to the 6731–6742 OEM-grade switches, this family provides flexible, long-life performance for medical, industrial, HVAC, and process applications.
| Function | Model | Pressure Range | Type | Electrical Rating | Mechanical Life | Typical Applications |
|---|---|---|---|---|---|---|
| Ultra-sensitive miniature | HPS-500-G | 0.25–1370 mbar | SPST-NO | 40 mA / 30V | 20×10⁶ | Medical & airflow systems |
| High-sensitivity OEM | HPS-600-G | 1.25–4144 mbar | SPDT | up to 15A / 250V | 10×10⁶ | HVAC, pneumatic actuation |
| Low-pressure OEM | 6731 / 6732 | 4–1137 mbar | SPCO / DPCO | up to 21A / 250V | 2×10⁶ | Pneumatic & water systems |
| Medium-pressure OEM | 6741 / 6742 | 100–8270 mbar | SPCO / DPCO | up to 21A / 250V | 1×10⁶ | Hydraulic & process systems |
The HPS-600-G is a miniature SPDT pressure switch engineered for very sensitive pressure actuation with long mechanical life.
Factory-adjustable or pre-set models allow OEMs to customize the switch for specific system requirements.
Pressure switching from 1.25 to 4144 mbar
Factory set or adjustable actuation setpoint
Miniature thermoplastic body with urethane diaphragm
Contact rating up to 15A / 250V AC
Long life – 10 million cycles
Operating temperature: +4°C to +65°C
Compact design ideal for OEM and embedded systems
Medical air or fluid control systems
HVAC, ventilation and safety devices
Low-pressure pneumatic actuation
Filter and airflow monitoring
The HPS-500-G is a highly sensitive SPST-NO miniature switch, capable of pressure, vacuum, and differential operation.
Its small footprint and high repeatability make it a perfect choice for tight-space OEM designs.
Adjustable actuation setpoint
Ranges from 0.25 to 1370 mbar
Proof pressure up to 1.7 bar (25 PSI)
Teflon or urethane diaphragm (model dependent)
Electrical rating: 40 mA resistive (30V max)
Mechanical life: 20 million cycles
Compact, lightweight housing
Differential pressure sensing
Airflow monitoring
Filter condition detection
Medical and laboratory instrumentation
The 6731 (single-pole) and 6732 (double-pole) are mid-size low-pressure switches with multiple microswitch configurations.
They are built primarily for OEM manufacturers who demand UL-approved, high-reliability components.
Pressure range: 4 to 1137 mbar
Electrical rating: up to 21A / 250V AC (2 HP)
Mechanical life: 2 million cycles
Thermoplastic body with Neoprene diaphragm
±10% setting accuracy
Brass 1/8” BSPT/NPT or 4 mm spout connections
Optional gold contacts for low-current circuits
Pneumatic safety interlocks
HVAC differential monitoring
Water and fluid control systems
Industrial and medical OEM equipment
The 6741 (single-pole) and 6742 (double-pole) are designed for medium pressure ranges with enhanced strength and repeatability.
They share the same high reliability as the 673x family, but with higher pressure capability and durable materials.
Pressure range: 100 to 8270 mbar
Body withstand pressure: up to 10 bar
Electrical rating: up to 21A / 250V AC
UL-approved versions available
Neoprene or Nitrile diaphragm
±10% setting accuracy
Suitable for gases, oils, and light liquids
Hydraulic and pneumatic control systems
Water pumps and filtration equipment
Gas and air handling systems
OEM process control
Herga’s range combines engineering precision, flexibility, and long-term durability, ensuring accurate operation across low and medium pressure environments.
Each switch is built for OEM integration, backed by decades of British manufacturing expertise and represented in Israel by Amironic Ltd., offering local support and technical guidance.
