Optim JM

• 1-50HP
• Totally Enclosed IP54 Design
• 60Hz, 230/460V (Usable on 208V), or 575V
• Horizontal F1 Mount
• 3600, 1800 & 1200 RPM
• NEMA Premium Efficiency
• 1.15 S.F. Sine Wave Power; 1.0 S.F. VFD Power
• Class B Temperature Rise
• Continuous Duty
• 40°C Ambient
• Class F Insulation
• Max Elevation 3300ft
• Shielded Bearings Frames 140T-280T and Open Bearings with Regreaseable Provisions Frames 280JP(2Pole), 320JP(2,4&6Pole) and Larger
• Shielded Bearings Frames 140JM(2,4&6Pole)-280JM(4&6Pole) and Open Bearings with Regreaseable Provisions Frames 280JM(2Pole), 320JM
• Polyrex EM Grease in all Regreaseable Bearings, Multemp SRL Grease in Sealed Bearings
• Dynamically Balanced Die-Cast Aluminum Rotor

• Cast-Iron Frame and End Brackets
• Cast-Iron Fan Cover and Terminal Box
• Non-Sparking Plastic Fan
• Number of Leads 230/460V: 9 Leads 1-5HP; 12 Leads 7.5 and Larger; 575V: 3 Leads
• Solderless Lug Terminals on All Leads
• Grounding Terminal Inside Main Terminal Box
• Interchangeable F1 and F2 mounting
• Paint System: Phenolic Rust Proof Base with Lacquer Top Coat
• Stainless Steel Nameplate
• Rubber Flinger on DE Frames 140JM(2,4&6Pole)-280JM(4&6Pole); Steel Flinger on Both Ends 280JM(2Pole), 320JM
• Phenolic Alkyd Resin Varnish
• *HPE™ High Pulse Endurance Spike Resistant Wire
• JM Pump Shaft
• CSA Certified for Class I, Division 2, Groups B, C & D (Class I, Zone 2, Groups IIB+H2, IIB and IIA)
• *Speed Ranges up to 10:1 CT, and 20:1 VT. Refer to data sheet for rating specific turn down ratios
• *Meets NEMA MG1 Part 31.4.4.2

* Precautions should be taken to eliminate or reduce voltage spikes and shaft currents that may be imposed on the motor by the VFD as stated per NEMA MG1, Part 31.4.4.