167N70

Overview

The Hammond Manufacturing 167N70 is a low voltage, enclosed chassis mount power transformer with a 280 VA rating. It features a single primary winding rated at 115 VAC and a single secondary winding providing 70 VAC center-tapped output at 4 A. The unit utilizes a laminated core design and connects via wire leads. Physical dimensions are 3.75 inches in length, 4.5 inches in width, and 4.56 inches in height, weighing approximately 3.8 kg. It operates at 50/60 Hz with a maximum operating temperature of +130°C.

Feature Summary

• Enclosed chassis mount construction for industrial environments
• Dual bobbin design to minimize leakage inductance
• Center-tapped secondary winding configuration
• Laminated core structure for efficient power transfer

Applications

• Industrial control panels requiring low voltage isolation
• Chassis-mounted equipment needing 70V filament supply
• Automation systems utilizing 280VA power distribution
• Enclosed machinery with standard 115VAC input requirements

Procurement Notes

Verify the manufacturer part number 167N70 against official Hammond Manufacturing documentation to ensure authenticity. Confirm that the specific order matches the 280VA rating and 70VCT secondary specification. Check RoHS compliance status as indicated in current datasheets. Ensure physical mounting hole patterns align with the chassis design before procurement.

Selection Notes

Select this component when a 280 VA capacity is required for chassis-mounted applications. The 115 VAC primary and 70 VCT secondary combination suits specific low voltage control circuits. Verify that the 3.75 x 4.5 inch footprint fits the available enclosure space. Consider the 4A secondary current limit for load calculations. Ensure the operating temperature range up to +130°C meets environmental conditions.

Part Context

This transformer belongs to the Hammond 167 Series, which offers various volt-ampere ratings from 0.63VA to 640VA. The series is characterized by enclosed designs suitable for industrial automation and control applications. The 167N70 specifically addresses needs for higher power density within a standard chassis mount form factor.

Replacement Considerations

Cross-reference with Hammond 167G100 for similar series alternatives. Verify electrical compatibility including VA rating, voltage levels, and physical dimensions before substitution. Ensure mounting hole patterns and lead lengths match the existing assembly requirements.