SOR 4BA Pressure Switch

Core Performance & Industrial Application

The SOR 4BA-KB4-M2-C1A-PP is a Big Hermet pressure switch with a force-balance piston-spring detection assembly sealed by a flexible diaphragm and static O-ring; switching capsule hermetically sealed in a steel can.

KB SPDT contact rated 15 A @250 VAC, 0.4 A @125 VDC (resistive); M2 housing; C1A pressure port; factory-sealed color-coded leads.

Piston-spring adjustable set point; typical dead band; overrange and proof pressure per KB4 range; field-adjustable via set-point nut.

It provides discrete pressure high/low alarm and interlock in hazardous industrial process service.

Technical Specifications

▶ Product type: Big Hermet mechanical pressure switch

▶ Brand: SOR Controls Group

▶ Model: 4BA-KB4-M2-C1A-PP; family 4BA

▶ Contact: KB SPDT; 15 A @250 VAC; 0.4 A @125 VDC resistive

▶ Sensing: Piston-spring; static O-ring diaphragm; 18 AWG color leads

▶ Housing: M2 aluminum Big Hermet; C1A pressure port

▶ Feature: Hermetic sealed switch capsule, field set-point adjustment

▶ Note: KB4 adjustable range, proof pressure and dead band confirmed from nameplate scale before ordering

▶ Country of origin: USA

▶ Compliance: UL, CSA certification

Industry Applications

Applied in oil, gas, water and process air pressure alarm/interlock service in harsh hazardous-area environments as spare switch replacement.

Note: Confirm adjustable range, differential and media compatibility against nameplate before ordering