Elca TM125-S24 | Control transformer 250 V.A “IN 220/380 – OUT 12/24”

Product Description
The Elca TM125-S24 is a single-phase dry-type control transformer rated at 250 VA, engineered for powering control circuits that require low, isolated AC voltages. Designed with a dual primary input (220 V or 380 V AC) and dual selectable secondary outputs (12 V or 24 V AC), this transformer offers reliable voltage conversion and electrical isolation in industrial and automation systems.
Its compact design, durable construction, and thermal protection features make it ideal for integration into electrical control panels, machinery, and safety circuits.
Technical Specifications
Transformer Type: Single-phase, dry-type
Rated Power: 250 VA
Primary Voltage (Input): 220 V / 380 V AC (selectable via terminal wiring)
Secondary Voltage (Output): 12 V AC or 24 V AC (selectable)
Frequency: 50/60 Hz
Insulation Class: Class B (130°C) or better
Cooling Method: Natural air-cooled (AN)
Winding Material: Copper
Core Material: Low-loss laminated magnetic steel
Protection Degree: IP20 (standard open type)
Mounting Type: Base or panel mount
Connection Type: Screw terminals for easy and secure wiring
Key Features
Dual Output Voltage (12 / 24 V AC)
Supports a wide range of control devices and signaling components.
Flexible Input Voltage (220 / 380 V AC)
Can be used in different regions or systems with varying supply voltages.
Electrical Isolation
Ensures safety and protection by isolating the control circuits from the main power source.
Compact and Durable Design
Space-saving, robust, and ideal for continuous industrial operation.
Low Maintenance
No moving parts, long operational life, and designed for easy installation and servicing.
Typical Applications
Supplying control circuits in machines and electrical panels
Powering push buttons, pilot lamps, relays, and safety interlocks
Providing voltage reduction for automation devices
Ensuring safe and isolated low-voltage AC for control components
Commonly used in HVAC units, elevator systems, industrial automation panels, and conveyor controls






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