Barrier Strips Tri-Barriers DESCRIPTION/APPLICATION TRI-BARRIER STRIPS The Tri-Barrier product is an original Thomas & Betts design and we set new terminal block standards with its introduction. In recent years, some of our competition has copied this design. Its easy to see why were copied. Our Tri-Barrier blocks help contain stray or frayed wire ends. This prevents electrical shorts not only between positions on the same block, but also between other components immediately adjacent to the block. With todays high-density PCB designs, this has become an increasingly important feature. APPLICATIONS Industrial controls and automation Machine tools HVAC/R Power supplies Security/Irrigation Transformers CONNECTOR INDEX DESIGN ADVANTAGES 0.250 Pitch, Series 3....................................................56-59 Back barriers to safeguard field 0.250 Pitch, Series RSB2..............................................60, 61 wiring 0.325 Pitch, Series 4....................................................62-65 Fast wiring backed-out wire- 0.325 Pitch, Series RSB3 ..............................................66-69 ready screws 0.375 Pitch, Series 6....................................................70-73 Interupted thread prevents screws 0.375 Pitch, Series RSB6 ..............................................74-77 from falling out 0.375 Pitch, Series BC6, Panel Mount..........................78-79 Standoffs allow flux and solvents to 0.375 Pitch, Series MB6, Double Level ........................80, 81 drain during cleaning 0.4375 Pitch, Series 8 ..................................................82, 83 Molded-to-length or cut-to-length versions available Slotted or phil-slot screws available Thomas & Betts Electronics/OEM Division Tel: 901-252-7766 Fax: 901-252-1312 55 Barrier Strips Tri-Barriers 0.325 PITCH SERIES 4 TRI-BARRIER PHYSICAL PROPERTIES HOUSING MATERIAL: Polyamide FLAMMABILITY: UL94V-0 COLOR: Black TERMINAL TERMINALS: Bright acid tin over copper alloy SCREWS: 4-40 steel, zinc plating with clear chromate coating. Wire clamping screw standard. Binding head screw with undercut optional. 4PCV-06 MECHANICAL PITCH (TERMINAL SPACING): 0.325 RECOMMENDED PCB HOLE DIA.: 1.8mm (.073) RECOMMENDED TIGHTENING TORQUE: 7 in.-lbs. max. ELECTRICAL PROPERTIES MAXIMUM CURRENT: 20A OPERATING VOLTAGE: 150V/300V (limited rating) 9,0 (For Dual Pin Configuration) WIRE RANGE: 14-22 AWG .351 1,8 4,6 Dia. ENVIRONMENTAL PROPERTIES 8,3 (.073) (.18) 5,8 OPERATING TEMPERATURE RANGE: 105C max. (.325) (.23) 6,3 (.25) 3,8 Dia. (.150) Right Angle Vertical Printed Circuit Board Layout 4,8 (.19) Suggested Panel Cutout 3,8 4,6 Dia. (.15) (.18) 3,5 6,3 (.25) (.14) 8,6 (.34) 1,4 (.055) 4,8 5,8 (.19) (.23) 6,3 3,8 Dia. (.25) (.15) Right Angle Center Printed Circuit Board Layout LR30811 E54800 Thomas & Betts Electronics/OEM Division Tel: 901-252-7766 Fax: 901-252-1312 Dimensions shown are for reference only. Dimensions are in millimeters (inches.) 62