Overview

The Acme Electric TF-2-17437-S is a compact encapsulated control transformer engineered for industrial control circuits requiring stable low-voltage power. It converts higher supply voltages into a regulated 24 VAC output suitable for relays, solenoids, and contactor coils.

Built within Acme’s Industrial Control Transformer (ICT) range, this unit is optimized to maintain voltage integrity during high inrush conditions, ensuring consistent operation of electromagnetic devices in demanding environments.

Technical Specifications

Design and Functional Features

High Inrush Load Handling

Unlike general-purpose transformers, this unit is specifically designed for control circuits with high momentary current demand. It maintains secondary voltage stability during energization of contactors and solenoids, preventing nuisance dropouts or chatter.

Selectable Primary Configuration

The dual primary winding allows flexible installation:

• Series connection for 480 VAC systems

• Parallel connection for 240 VAC systems

This adaptability simplifies inventory management across facilities with mixed voltage levels.

Encapsulated Construction

The internal windings and magnetic core are fully sealed in an epoxy compound. This construction:

• Protects against moisture, dust, and oil vapors

• Enhances dielectric strength

• Reduces audible noise and mechanical vibration

It is well suited for harsh industrial panels and machinery enclosures.

Integrated Secondary Protection

Factory-installed fuse clips on the secondary side eliminate the need for external fuse holders. This reduces panel wiring complexity and helps meet control circuit protection requirements in accordance with standard electrical practices.

Installation Considerations

Compact Panel Integration

The transformer features a space-efficient footprint, making it suitable for dense control cabinets where component spacing is limited.

Wiring Simplicity

Clearly marked terminals and accessible fuse clip placement support fast installation and maintenance without additional accessories.

Thermal Performance

Designed for continuous duty operation, the unit maintains stable thermal characteristics under rated load conditions, ensuring long service life.

Application Scenarios

• Industrial control panels

• Motor starter circuits

• Relay and contactor power supply

• Packaging and automation machinery

• HVAC and building control systems

FAQ

What distinguishes this transformer from general-purpose types?

It is specifically engineered for high inrush loads, ensuring voltage stability when energizing electromagnetic devices.

Can it be used on both 240V and 480V systems?

Yes, the dual primary winding allows configuration for either voltage via proper wiring.

Is external fuse protection required?

No, the unit includes built-in secondary fuse clips, simplifying installation.

Is it suitable for harsh environments?

Yes, the encapsulated design protects internal components from contaminants and vibration.