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Hammond Manufacturing 278X High Voltage Transformer

The 278X high-voltage isolation transformer provides a power rating of 229 VA with an 800 VAC secondary at 230 mA. Designed for power management and industrial use, it features a 115 VAC primary input operating at 60 Hz. The enclosure is a four-hole chassis mount with at least 6 inches of lead length, suitable for vertical mounting. It offers full-wave bridge or CT operation, Class-A insulation rated at 105°C, and withstands high-pot testing of 2000 Vrms. Safety note: never connect grey and black wires simultaneously to prevent transformer damage.

Authorized Distributors
Source:Newark
Part No:278X
Stock:8
Inv Date:06-11-2026
Price: Unit price: $192.87
Buy/RFQ:
Source:DigiKey
Part No:278X
Stock:0
Inv Date:06-11-2026
Price: Unit price: $193.29
Buy/RFQ:
Part No:278X
Stock:2
Inv Date:06-12-2026
Price: Unit price: $187.25
Buy/RFQ:
Part No:278X
Stock:0
Inv Date:06-11-2026
Price: Unit price: $191.41
Buy/RFQ:
Part No:278X
Stock:0
Inv Date:06-11-2026
Price: Unit price: $171.57
Buy/RFQ:
Part No:278X
Stock:0
Inv Date:06-11-2026
Price: Unit price: $171.57
Buy/RFQ:
Part No:278X
Stock:5
Inv Date:06-11-2026
Price: Unit price: $171.5
Buy/RFQ:

Hammond Manufacturing 278X High Voltage Transformer Specifications:

  • Power Rating: 229 VA
  • Primary Input: 115 VAC, 60 Hz
  • Secondary Voltage: 800 VAC at 230 mA
  • Mounting: Enclosed, 4-hole chassis mount
  • Lead Length: Minimum 6 inches
  • Operation: Full-wave bridge or CT
  • Insulation Class: A (105°C)
  • High-Pot Test Voltage: 2000 Vrms
  • Enclosure Material: Metal
  • Safety: Warning against connecting grey and black wires simultaneously

Buy the Buy Hammond High Voltage Transformer Part Number 278X Online

Purchase the Hammond High Voltage Transformer 278X online today to ensure your industrial equipment and power systems operate safely and efficiently. With a robust 229 VA power rating and an 800 VAC secondary, this unit offers dependable performance in power management applications. Its enclosure features four mounting holes and at least 6 inches of lead length for flexible installation. Rated for Class-A insulation at 105°C, it supports full-wave bridge or CT operation and has passed high-pot testing of 2000 Vrms. Buy now for quality and safety.

Order your Hammond High Voltage Transformer 278X today and ensure reliable power isolation for industrial and power management projects.

Frequently Asked Questions

Where can I buy Hammond Manufacturing 278X?

You can click on the BUY or RFQ button to purchase 278X from an authorized Hammond Manufacturing distributor.

How do I troubleshoot issues or seek technical support for part 278X?

You can download the 278X datasheet or visit the Hammond Manufacturing website for support.

Who is the manufacturer of 278X?

Hammond Manufacturing

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