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| Part Number | 166N12B | 166N12 | 166N12B-BULK | 166N12-BULK |
| Manufacturer | Hammond Manufacturing | Hammond Manufacturing | Hammond Manufacturing | Hammond Manufacturing |
| Series | 166 | 166 | 166 | 166 |
| Packaging | Box | Bulk | Bulk | Bulk |
| Product Status | Active | Active | Active | Active |
| Type | Laminated Core | Laminated Core | - | - |
| Voltage - Primary | 117V | 115V | 115V | 115V |
| Voltage - Secondary (Full Load) | 12V | 12.6V | 12V | 12V |
| Current - Output (Max) | 4A | 4A | 4A | 4A |
| Primary Winding(s) | Single | Single | Single | Single |
| Secondary Winding(s) | Single | Single | Single | Single |
| Center Tap | Yes | Yes | Yes | Yes |
| Power - Max | 48VA | 50.4VA | 48VA | 50.4VA |
| Mounting Type | Chassis Mount | Chassis Mount | Chassis Mount | Chassis Mount |
| Termination Style | Wire Leads | Wire Leads | Wire Leads | Wire Leads |
| Size / Dimension | 93.73mm L x 50.80mm W | 93.73mm L x 50.80mm W | 93.73mm L x 50.80mm W | 93.73mm L x 54.10mm W |
| Height - Seated (Max) | 58.67mm | 58.67mm | 58.67mm | 58.67mm |
| Voltage - Isolation | 2000Vrms | 2000Vrms | 2000Vrms | 2000Vrms |
| Weight | 2 lbs (907.2 g) | 2 lbs (907.2 g) | - | - |
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