28 Volt AC Center Tap Transformer 4 AmpElectrical Specifications at 25 Degree C1. Maximum Power: 112.0 VA2. Primary: 115 Volt 50/60 Hz3. Secondary: 28.0 Volt CTat 4.0 Amps4. Voltage Regulation: 5 % Typical at full load to no load5. Temperature Rise: 35 Degree C Typical (45 Degree C Maximum Allowed)Description:Chassis Mount: Single SecondaryThe F-187U is part of a series which has a long history of reliable service in thefield,.Made from a proven design and constructed with UL recognized materials.Wound on a single channel nylon bobbin. Materials are UL recognized, Class B(130 DegreeC) rated.Dimensions in Inches:3.3″ (L) x 2.82″ (W) x 3.38″ (H)Mounting Holes Center to Center: 2.75″ (L) x 2.5″ (W)Leads areabout 7 Inches Long Magnetek TriadF-187 U