Hammond Power Solutions FS250NJ - Single Phase Transformer 277V to 120V (Copper Windings)

FS250NJ

Hammond Power Solutions FS250NJ is a single-phase transformer designed for industrial power distribution applications. This unit features a primary voltage of 277V and secondary voltage of 120V with series connections, constructed with copper windings rated for 95°C temperature rise and 130°C insulation class. The compact Type 1/IP20 enclosure measures 4.3in/110mm(H) x 3.9in/100mm(W) x 6.6in/168mm(D) with Pantone 349C green finish and features terminal block primary termination. It complies with seismic standards including OSHPD and IBC 2018 (Sds=2.0, z/h=1, lp=1.5), making it suitable for commercial and industrial lighting systems, control circuits, and equipment power supplies requiring reliable voltage transformation. Key Features & Specifications

• Type: Single-phase transformer
• Primary Voltage: 277V
• Secondary Voltage: 120V
• Frequency: 50/60Hz
• EKVA: 0.332598
• Material: Copper windings
• Temperature Rise: 95°C
• Insulation Class: 130°C
• Enclosure Type: Type 1 / IP20
• Enclosure Dimensions: 4.3in/110mm(H) x 3.9in/100mm(W) x 6.6in/168mm(D)
• Seismic Compliance: OSHPD, IBC 2018 (Sds=2.0, z/h=1, lp=1.5)
• Primary Termination: Terminal Block

Specifications

• Part Number: FS250NJ
• Manufacturer : Hammond Power Solutions
• Brand : Hammond Power Solutions
• Category : Transformer
• Phase : 1
• Enclosure Grade : Standard
• Frequency : 50/60Hz
• Primary Voltage : 277
• Primary Connection : Series (V)
• Secondary Voltage : 120
• Secondary Connection : Series (V)
• Material : Copper
• Temperature Rise : 95°C
• Insulation Class : 130°C
• EKVA : 0.332598
• Seismic Compliance : OSHPD, IBC 2018 (Sds=2.0, z/h=1, lp=1.5)
• Enclosure Type : Type 1 / IP20
• Enclosure Finish : Pantone 349C Green
• Enclosure PN (NPL) : FS-N1
• Enclosure Dimensions : 4.3in/110mm(H), 3.9in/100mm(W), 6.6in/168mm(D)
• Nameplate : Standard
• Vector Configuration : 180°
• Seismic Standard Value : IBC 2018
• OSHPD : Yes
• Seismic IP : lp=1.5
• Seismic ZH : z/h=1
• Seismic SDS Value : Sds=2.0
• Enclosure IR Window : No
• Primary Termination (Std) : Terminal Block

Product Data

• UPC : 803423107925
• Weight : 8
• Certification : CSA, UL, CE

Documentation and Resources

• Engineering Drawing (PDF)
• Brochure
• Hammond Product Application Videos
• Frequently Asked Questions
• Troubleshooting Guide
• Enclosure CAD Drawing (PDF)