Hammond 166L12B 12.6V CT 2A Power Transformer, 117V 50/60Hz Primary
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Create Free Business AccountKey Features
- 117V 50/60 Hz. primary; 12.6 V C.T. secondary rated 2 A RMS (25.2 VA)
- Open style, channel bracket, two-hole chassis mount
- Overall A x B x C: 3.25 x 2.00 x 2.00 in; 2.81 in hole-to-hole mounting (D)
- Dual bobbin design - no electrostatic shield required
- Class B (130 °C) insulation; UL listed as a Class A (105 °C) design
- Minimum 6 in long leads
- Hi-pot tested at 2,000V RMS; UL listed and CSA certified
- RoHS and REACH compliant
The 166L12B is a low voltage/filament power transformer from the 166 Series of economical single-primary, open style chassis mount transformers. It takes a 117V 50/60 Hz. primary and delivers a 12.6 V center-tapped (C.T.) secondary rated 2 A RMS, for a power rating of 25.2 VA. It suits OEM engineers, equipment builders and technicians who need a compact line-to-low-voltage transformer that bolts directly to a chassis. The series table lists the 166L12 as the 115V 60 Hz. model with a 2.5 A (31.5 VA) rating in the same A-B-C-D footprint; the 166L12B is the 117V 50/60 Hz. choice at 2 A.
Construction is open style with a channel bracket and two-hole chassis mounting. A dual bobbin design means no electrostatic shield is required, and the series uses Class B insulation (130 °C) for extra protection, while the design is UL listed as Class A (105 °C). Leads are a minimum of 6 in long.
Overall dimensions from the series table are A 3.25 in (83 mm), B 2.00 in (51 mm) and C 2.00 in (51 mm), with a D (hole-to-hole mounting) dimension of 2.81 in (71 mm); the mounting dimension column lists 0.19 in (5 mm) (mounting ref. C). Shipping weight is 2.04 lbs (0.93 kg).
The 166 Series is hi-pot tested at 2,000V RMS, UL listed and CSA certified, and this part is listed as RoHS and REACH compliant.
Ideal For
- Low voltage and filament supplies from a 117V 50/60 Hz. line
- Chassis-mounted power supplies needing 12.6 V C.T. at up to 2 A
- Circuits that use a center-tapped 12.6 V secondary
- OEM equipment and control panels requiring a 25.2 VA transformer
Mounting
| Mounting Style | Open style, channel bracket, two-hole chassis mount |
| Mounting Reference | C |
| Mounting Dimension (Series Table) | 0.19 in (5 mm) |
Overview
| Style | Open Style, Chassis Mount |
| Series | 166 Series - Low Voltage/Filament - Economical Single Primary |
| Part Number | 166L12B |
| Product Type | Power transformer, low voltage |
| Long Description | Power transformer, low voltage, 117V 50/60 Hz., 25.2VA, 12.6 C.T., 2A |
| Short Description | POWER TX 117VAC 12.6V@2A |
Dimensions
| Overall Dimension A | 3.25 in (83 mm) |
| Overall Dimension B | 2.00 in (51 mm) |
| Overall Dimension C | 2.00 in (51 mm) |
| Hole-to-Hole Mounting (D) | 2.81 in (71 mm) |
Electrical
| Insulation | Class B (130 °C); UL listed as a Class A (105 °C) design |
| Power Rating | 25.2 VA |
| Primary Voltage | 117V 50/60 Hz. |
| Electrostatic Shield | Not required (dual bobbin design) |
| Secondary Current (RMS) | 2 A |
| Secondary Voltage (RMS) | 12.6 C.T. VAC |
| Hi-Pot Test (Series Specification) | 2,000V RMS |
Identifiers
| UPC | 623980024776 |
| UNSPSC | 39121301 |
Packaging & Shipping
| Shipping Weight | 2.04 lbs (0.93 kg) |
Construction & Finish
| Leads | Minimum 6 in long |
| Bobbin | Dual bobbin design |
Compliance & Certifications
| UL | UL listed |
| CSA | CSA certified |
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
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Frequently Asked Questions
What input voltage does the 166L12B require?▾
The 166L12B has a single primary rated 117V 50/60 Hz..
What is the secondary output of the 166L12B?▾
It provides 12.6 VAC RMS with a center tap (C.T.) at 2 A, a power rating of 25.2 VA.
How is the 166L12B mounted and what are its dimensions?▾
It is an open style transformer with a channel bracket for two-hole chassis mounting. Overall dimensions are A 3.25 in (83 mm), B 2.00 in (51 mm), C 2.00 in (51 mm), with 2.81 in (71 mm) between mounting holes (D).
Is the 166L12B UL listed and CSA certified?▾
Yes. The 166 Series is UL listed (as a Class A, 105 °C design, while using Class B 130 °C insulation) and CSA certified. The 166L12B is also listed as RoHS and REACH compliant.
Does the 166L12B need an electrostatic shield?▾
No. The series uses a dual bobbin design, so no electrostatic shield is required. The series is hi-pot tested at 2,000V RMS.
How long are the leads on the 166L12B?▾
Leads are a minimum of 6 in long.
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