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Product Detailed Parameters
- Description：PWR XFMR LAMINATED 40VA CHAS MT
- Series：166
- Mfr：Hammond Manufacturing
- Package：Bulk
- Type：Laminated Core
- Voltage - Primary：115V
- Voltage - Secondary (Full Load)：20V
- Current - Output (Max)：2A
- Primary Winding(s)：Single
- Secondary Winding(s)：Single
- Center Tap：Yes
- Power - Max：40VA
- Mounting Type：Chassis Mount
- Termination Style：Wire Leads
- Size / Dimension：93.73mm L x 47.75mm W
- Height - Seated (Max)：58.67mm
- Voltage - Isolation：2000Vrms
- Weight：1.6 lbs (725.7 g)
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Overview
The Hammond Manufacturing 166L20 is a laminated core industrial power transformer designed for chassis mounting. It features a single primary winding rated at 115 VAC and a single secondary winding providing 20 VAC center-tapped output. The unit has a power rating of 40 VA with a maximum secondary current of 2 A. Operating frequencies include 50 Hz and 60 Hz. Physical dimensions are approximately 82.6 mm in length, 41.4 mm in width, and 42.9 mm 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 output suitable for rectifier applications
Applications
- Industrial control panels
- Filament heating circuits
- Low voltage rectifier systems
Procurement Notes
Verify the specific suffix or variant against the official datasheet to ensure compatibility with required voltage and current specifications. Confirm that the wire lead length and insulation type meet the installation constraints. Check RoHS compliance status if environmental regulations apply to the final assembly. Ensure the chassis mounting holes align with the mechanical drawing provided by the manufacturer.
Selection Notes
Select this model when a 40 VA capacity is required for low voltage AC distribution. The 20 VAC center-tapped secondary is ideal for full-wave rectification requiring dual polarity supplies. Consider the physical footprint and weight constraints relative to the enclosure design. Verify that the operating temperature range meets the environmental conditions of the application site.
Part Context
This component belongs to the Hammond 166 series of industrial power transformers. The series offers various power ratings and voltage configurations for general-purpose industrial use. These transformers are characterized by their robust laminated core construction and standardized chassis mounting dimensions, facilitating integration into custom control enclosures.
Replacement Considerations
Consult the official Hammond Manufacturing cross-reference list for verified substitutes. Ensure any replacement part matches the 40 VA rating, 115 VAC primary, and 20 VAC CT secondary specifications. Mechanical compatibility must be confirmed by comparing mounting hole patterns and overall dimensions.
