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Control Transformer

Compact, high-inrush capability transformers designed to provide stable control voltage for industrial panels, motor starters, and automation circuits.

High Inrush Compact
Regulation Excellent Load Regulation
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What It Does

In an electrical panel, the main power might be 415V, but the "brains" (Contactors, Timers, PLCs, Pilot Lights) typically run on safe, lower voltages like 110V, 24V, or 48V.

A **Control Transformer** steps down the main line voltage to the control voltage. Unlike standard transformers, it is specifically designed to handle the **high inrush currents** that occur when electromagnetic components (like large contactors) energize, without allowing the voltage to dip and cause system errors.

Performance Characteristics

Why not use a regular transformer? It's all about "Inrush":

1. The Spike: When a motor starter coil energizes, it pulls 5-10 times its normal current for a split second (Inrush).
2. Voltage Dip: A standard transformer would let the voltage drop significantly during this spike, causing other relays to "chatter" or drop out.
3. The Control Transformer Solution: It uses low-impedance windings and high-quality silicon steel cores to maintain a stable output voltage even during these massive momentary surges.

Key Features

High Inrush Capacity

Maintains voltage stability during the activation of heavy electromagnetic loads.

Safety Isolation

Isolates the control circuit from the high-power main lines, protecting operators.

Cool Running

Vacuum impregnated coils ensure excellent heat dissipation and moisture resistance.

Flexible Taps

Primary side usually has taps (e.g., 0-380-400-415-440V) for universal compatibility.

Technical Specifications

VA Rating 50 VA to 10 kVA
Input Voltage (Primary) 230V / 415V / 440V (Single or Two Phase)
Output Voltage (Secondary) 12V / 24V / 48V / 110V / 220V
Insulation Class Class B (130°C) or Class F (155°C)
Frequency 50/60 Hz
Winding Copper
Terminals Finger-safe terminal blocks

Ideal Applications

Motor Control Centers (MCC) Electrical Panels Industrial Automation Signaling Systems Elevators & Escalators HVAC Control Boards