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Schaefer Inc.

45 South Street
Hopkinton, MA 01748
USA
508.435.6400
508.435.6401
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More Info on Schaefer Inc.

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Schaefer specializes in on-board and trackside rail applications. Our unique design and manufacturing allows flexibility in power conversion for an endless combination of input and output voltages. Extra rugged construction ensures long-life and reliable operation in even the most demanding applications, including on-board electronics, as well as other transit vehicles, mining vehicles, and switchers. DC/DC converters, DC/AC inverters, and battery chargers available from 50W to 40 KW+ include:

  • 36VDC, 74VDC or 110VDC inputs.
  • Ultra-wide input ranges to handle extremes.
  • Steady output power even during cranking conditions.
  • Buck, boost, or isolated topology.
  • High efficiency, lightweight, high power density for smaller package designs.

Products

Schaefer Inc.
cb5600 58457717e8e9e
Schaefer Inc.has introduced the C/B5600 Series of 6000 Watt DC/DC converter, AC/DC power supply and battery charging products.
Dec. 5, 2016
Schaefer Inc. has introduced the C/B3500 Series of 850 Watt DC-DC and AC-DC converter modules and battery charger.
Aug. 25, 2016
Compact 6U Module Up to 1250W Output Power Choice of AC/DC Power Supply, DC/DC Converter or Battery Charger Natural Convention
Sept. 30, 2015
Schaefer Inc.
TERa power supplies
Low profile Temperature range of –50ºC to 85ºC Parallel/series operation Power Factor Correction (PFC)
Jan. 16, 2015
Designed for rail usage EN50155(IEC751) and EN50121-3-2 compliant Offers 5, 12, 15 and 24VDC outputs Input voltages of either 72(43-101)VDC or 110(66-160)VDC
Jan. 20, 2014
500W of Power 24,48,48,110 VDC Inputs 5,12,24,48 VAC Outputs Meets EN50155 Version Meets EN60950 Version
Feb. 21, 2012
240W of Power 24,48,48,110 VDC Inputs 5,12,24,48 VAC Outputs Meets EN50155 Version Meets EN60950 Version
Feb. 21, 2012
120W of Power 24,48,48,110 VDC Inputs 5,12,24,48 VAC Outputs Meets EN50155 Version Meets EN60950 Version
Feb. 20, 2012
3000W of Power 24,36,48,72,110 VDC Inputs 115 or 230 VAC Outputs EN50155 Version
Feb. 20, 2012
1500W of Power 24-41 VDC Inputs 115 or 230 VAC Outputs Digital Display
Feb. 20, 2012

Press Releases

Schaefer Inc. has introduced a DC/AC Inverter Systems for trackside signal redundancy requirements and other applications including emergency lighting.
Nov. 10, 2017
Schaefer Inc.
cb5600 58457717e8e9e
Schaefer Inc. has introduced the C/B5600 Series of 6000 Watt DC/DC converter, AC/DC power supply and battery charging products.
Dec. 5, 2016
Schaefer Inc. has introduced the C/B3500 Series of 850 Watt DC-DC and AC-DC converter modules and battery charger.
Aug. 25, 2016
Schaefer Inc. introduced the C3700 Series of 1250 Watt DC-DC and AC-DC converter modules and battery charger.Utilizing industrial grade components, the compact 6U design provides...
Sept. 30, 2015
Schaefer Inc.
TERa power supplies
Schaefer Inc. unveiled the new low-profile TERa Series of Advanced Thermal Technology ac-dc power supplies.
Jan. 16, 2015
Schaefer Inc. announced the addition of the MTQZ50 Series by Minmax to its power product portfolio.
Jan. 27, 2014

Contacts

Sue Mayrand

Vice President

Additional content from Schaefer Inc.

250W of Power 12,24,48,72,115 VDC Inputs 230 VAC Outputs Compact Size
Feb. 20, 2012
750W of Power 12,24,48,72,110 VDC Inputs 115 or 230 VAC Outputs EN50155 Version
Feb. 20, 2012
Ideal for Dead Start Cranking Converts 600/750VDC to 24VDC 250 Watts Meets EN51055 Standards High Isolation - Up to 7000VDC
Oct. 10, 2011
Hermetically Sealed EnclosureControlled Air ManagementBattery Charger & DC Bus SupplyRigorous Environmental SpecificationsEngineered for Robust Shock & VibrationSelf Protecting...
May 15, 2011
Pure Sine Wave Inverter. 3-Phase Outputs. Power Ratings to 30kVA!
May 15, 2011
5KW of Power with Ten Standard DC Input Ranges.Single or Three Phase AC InputsBattery Charging Models Available. Single DC Output Voltages up to 400VDC.Rugged 6U Package!
May 15, 2011
Accepts 24VDC-41VDC Input 115VAC or 230VAC Output Models Available 1500W Pure Sine Wave Inverter Rugged Design Easy Installation
May 15, 2011
• Available in three standard DC input voltage ranges as well as 3-phase AC input voltages• Single outputs are available in six standard ranges from 23-200VDC
Oct. 4, 2007