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Product Detailed Parameters
- Description：PWR XFMR LAMINATED 4.5VA CHAS MT
- Series：166
- Mfr：Hammond Manufacturing
- Package：Bulk
- Type：Laminated Core
- Voltage - Primary：115V
- Voltage - Secondary (Full Load)：9V
- Current - Output (Max)：500mA
- Primary Winding(s)：Single
- Secondary Winding(s)：Single
- Center Tap：Yes
- Power - Max：4.5VA
- Mounting Type：Chassis Mount
- Termination Style：Wire Leads
- Size / Dimension：60.45mm L x 35.05mm W
- Height - Seated (Max)：35.05mm
- Voltage - Isolation：2000Vrms
- Weight：0.4 lb (181.44 g)
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Overview
The Hammond Manufacturing 166G9 is a low voltage industrial power transformer designed for chassis mounting. It features a single primary winding rated at 115 VAC and a single secondary winding providing 9 VAC center-tapped output. The unit has a power rating of 4.5 VA with a maximum secondary current of 0.5 A. It operates at frequencies of 50 Hz or 60 Hz and supports an operating temperature range from 0°C to +130°C. Physical dimensions are 2.38 inches in length, 1.38 inches in width, and 1.38 inches in height. Termination is achieved via wire leads.
Feature Summary
- Chassis mount design with wire lead termination
- Single primary and single secondary winding configuration
- Low voltage operation suitable for industrial control applications
Applications
- Industrial control panels
- Equipment requiring isolated low voltage power
- General purpose power transformation
Procurement Notes
Verify the specific secondary voltage requirement matches the application needs, as the 166G9 provides a 9V CT output. Confirm that the 4.5 VA power rating is sufficient for the connected load current. Ensure the chassis mounting style and wire lead termination are compatible with the assembly design. Check RoHS compliance status if required by project specifications.
Selection Notes
Select this model when a compact, low-voltage transformer with a 9V center-tapped secondary is required. The 4.5 VA rating limits the available current to 0.5 A. Consider the 166G series variants if different voltage outputs such as 6.3V, 8V, or 115V are needed while maintaining similar physical footprints. Verify thermal management requirements given the +130°C maximum operating temperature.
Part Context
The 166G9 belongs to the Hammond 166 series of industrial control transformers. This series offers various voltage configurations including 6.3V, 8V, 9V, and higher voltages like 16V and 30V. All units in this line share similar chassis-mount construction and wire lead terminations, differing primarily in core size and electrical ratings to suit diverse power needs.
Replacement Considerations
Direct substitutes within the same series include the 166G6B (6.3V) and 166G8 (8V) for lower voltage needs, or the 166G16 (16V) for higher voltage requirements. Ensure the replacement maintains the 115V primary input and compatible physical dimensions for chassis installation.
