Hammond 167G55 55V CT 0.5A Enclosed Chassis Transformer, 27.5 VA
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Create Free Business AccountKey Features
- 27.5 VA rating with 55 V C.T. secondary at 0.5 A (RMS)
- 115 VAC, 60 Hz primary
- Enclosed housing with 4 hole chassis mount
- Compact A 1.88 x B 2.44 x C 2.50 in body with 0.19 x 0.31 in mounting slots
- Class B insulation (130 °C); hi-pot tested at 2,000V RMS
- Dual bobbin design - no electrostatic shield required
- UL listed (# E50394) and CSA certified (209651); RoHS and REACH compliant
- Leads minimum 6 in long; shipping weight 1.3 lbs (0.59 kg)
The 167G55 is an enclosed, chassis mount power transformer that converts a 115 VAC, 60 Hz primary into a 55 V centre-tapped secondary at 0.5 A. Rated 27.5 VA (listed as 28VA in the manufacturer's description), it suits low-current rectifier and bias supplies in OEM, instrumentation and hobby builds.
It follows the 167 Series construction: an enclosed housing, a dual bobbin design that needs no electrostatic shield, Class B insulation rated 130 °C, and a hi-pot test of 2,000V RMS. All secondaries in the series are centre tapped, and leads are a minimum of 6 in long. The 55 V C.T. winding gives two 27.5 V halves referenced to the centre tap.
The ordering table lists the 167G55 at A 1.88 in (48 mm), B 2.44 in (62 mm), C 2.50 in (64 mm), D 1.50 in (38 mm) and E 1.56 in (40 mm), with 0.19 x 0.31 in (5 x 8 mm) mounting slots for its 4 hole chassis mount. Shipping weight is 1.3 lbs (0.59 kg).
The transformer is UL listed (# E50394) and CSA certified (209651), and it is declared RoHS and REACH compliant. Confirm your supply matches the 115 VAC, 60 Hz primary before installing.
Ideal For
- Rectified DC power supplies
- Split 27.5 V rails from a 55 V C.T. winding
- Control and instrumentation circuits
- OEM chassis-mounted equipment power
Mounting
| Mounting Style | Enclosed, 4 hole chassis mount |
| Mounting Slot G | 0.19 in (5 mm) x 0.31 in (8 mm) |
Overview
| Style | Enclosed, chassis mount |
| Series | 167 Series |
| Product Type | Power Transformer - Low Voltage, Filament |
| Short Description | FIL-RECT 28VA 115 55VCT |
| Manufacturer Description | Power transformer, low voltage, enclosed chassis mount, 28VA 115 55VCT |
Dimensions
| Dimension A | 1.88 in (48 mm) |
| Dimension B | 2.44 in (62 mm) |
| Dimension C | 2.50 in (64 mm) |
| Dimension D | 1.50 in (38 mm) |
| Dimension E | 1.56 in (40 mm) |
Electrical
| Hi-Pot Test | 2,000V RMS |
| Power Rating | 27.5 VA |
| Primary Voltage | 115 VAC, 60 Hz. |
| Winding Construction | Dual bobbin design - no electrostatic shield required |
| Secondary Current (RMS) | 0.5 A |
| Secondary Voltage (RMS) | 55 VAC C.T. (center tapped) |
Identifiers
| UPC | 623980244709 |
| UNSPSC | 39121301 |
| Part Number | 167G55 |
Packaging & Shipping
| Shipping Weight | 1.3 lbs (0.59 kg) |
Construction & Finish
| Leads | Minimum 6 in long |
| Insulation Class | Class B (130 °C) |
Compliance & Certifications
| UL | UL listed (# E50394) |
| CSA | CSA certified (209651) |
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
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Frequently Asked Questions
What is the output of the 167G55?▾
The 167G55 provides a 55 V centre-tapped (C.T.) RMS secondary rated at 0.5 A, for a power rating of 27.5 VA.
What input voltage does the 167G55 accept?▾
The primary is rated 115 VAC, 60 Hz.
How is the 167G55 mounted?▾
It is an enclosed transformer with a 4 hole chassis mount; the mounting slots measure 0.19 x 0.31 in (5 x 8 mm).
What certifications does it carry?▾
It is UL listed (# E50394) and CSA certified (209651), and it is RoHS and REACH compliant.
What insulation and testing does it have?▾
It uses Class B insulation (130 °C) and is hi-pot tested at 2,000V RMS. The dual bobbin design means no electrostatic shield is required.
Why does the description show a different figure from the rating?▾
The manufacturer's short description reads "FIL-RECT 28VA 115 55VCT", while the listed power rating is 27.5 VA with a 55 V C.T. secondary at 0.5 A; the attribute and ordering-table values are used on this page.
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