Spellman's world headquarters is located in a 9,290 m² (100,000 ft²) building in Hauppauge, New York. Home to the industry's largest dedicated engineering staff, and world-class manufacturing facilities. Spellman has set the standard for excellence in design and manufacturing of high voltage power supplies.

A few Spellman features:

• ISO 14001-2015 Certification
• ISO 9001:2015 Certification
• Detailed Quality System
• ERP System including shop floor control and bar coding
• Vertically Integrated Manufacturing
• Environmental Stress Screening (ESS, Thermal & Vibrational) capabilities used in HALT and HASS
• Partial Discharge and Environmental Test Capabilities
• EMC Test Capabilities, CE Self Certification Capabilities
• UL/ETL/CSA/TUV Safety Agency Approval on selected products
• Sophisticated encapsulation and oil processing equipment
• Domestic Sales Satellite offices in: Wisconsin and California