CBM Pressostat commande moteur B71A

3G-CBM-03580 Pressure switches for single-phase / two-phase motors direct control Pressure controls suitable to control directly the electric motors of the pumps, compressors, domestic or industrial autoclaves groups. Suitable as well for fluids (gas or liquids) chemically compatible with the friction diaphragm. 92 67 Dimensiones (mm) 95 Range Differential Max. differential Protection range beginning range ending of the sensible element degree bar bar bar bar B71 1,5 ÷ 4,5 1,0 ÷ 2,1 1,2÷ 2,3 6 IP40 1 Bar = 100Kpa *The differential must be deducted from the range value. ELECTRICAL FEATURES Double breaking switch for each pole, contacts in silver alloy. EXAMPLE OF ELECTRICAL WIRING for direct control of the electric motor When pressure rises the contacts are opening Nominal insulation tension Ui 415V~ Continuous duty nominal current Ith 15A Operating nominal current in AC-1 le 12A Operating nominal current in AC-3 le 3A two-phase motor three-phase motor HOMOLOGATION AND STANDARDS Complies with EN 60947-5-1 standards. INSTALLATION Direct installation on the pipe. OPERATION Contacts are opening when pressure rises. Bipolar contact allows the control of electric motors up to 3A, without contactor. 6 5,5 5 4,5 Pressure at disconnection (contacts opening) 4 3,5* 3 2,5* Pressure at connection (contacts closing) 2 1,5 * EXAMPLE: Pressure at disconnection 3,5 bar Pressure at connection 2,5 bar Pressure differential Pressure regulation at regulation at connection: pressure value disconnection rises on screwing FEATURES Sensitive element with friction membrane. Adjustable differential. Flange connection G 1/4. Cover in shockproof thermoplastic material. The metallic parts are in stainless steel. Earth clamp. Output connections with two cable glands. Maximum temperature of the controlled fluid: 70°C. Pressure switch body admissible temperature: -15 ÷ 60°C. Storage and transport temperature: -15 ÷ 60°C. Unit weight: 0,35 Kg.