| PartNumber | 266M18 | 266M16 | 266M12 |
| Description | Power Transformers DualPrimarySecondary 54VA, 18V CT @ 3A | Power Transformers DualPrimarySecondary 48VA, 16V CT @ 3A | Power Transformers DualPrimarySecondary 38VA, 12.6V CT @ 3A |
| Manufacturer | Hammond Manufacturing | Hammond Manufacturing | Hammond Manufacturing |
| Product Category | Power Transformers | Power Transformers | Power Transformers |
| Series | 266 | 266 | 266 |
| Type | Laminated Core | Laminated Core | Laminated Core |
| Termination Style | Wire Leads | Wire Leads | Wire Leads |
| Mounting Type | Chassis Mount | Chassis Mount | Chassis Mount |
| Size Dimension | 102.36mm L x 63.50mm W | 101.60mm L x 58.42mm W | 93.73mm L x 58.67mm W |
| Current Output Max | Parallel 6A, Series 3A | Parallel 6A, Series 3A | Parallel 6A, Series 3A |
| Power Max | 54 VA | 48 VA | 38 VA |
| Voltage Isolation | 2000Vrms | 2000Vrms | 2000Vrms |
| Height Seated Max | 66.80mm | 66.55mm | 58.67mm |
| Voltage Primary | 117V, 234V | 117V, 234V | 117V, 234V |
| Voltage Secondary Full Load | Parallel 9V, Series 18V | Parallel 8V, Series 16V | Parallel 6.3V, Series 12.6V |
| Primary Winding s | Dual | Dual | Dual |
| Secondary Winding s | Dual | Dual | Dual |
| Center Tap | No | No | No |