LEGRAND 42651

Legrand 63VA Control and Safety Transformer Assembly

Description

This is a Legrand single-phase control, safety and isolating transformer, part number 426 51. It is designed to provide a safe and reliable low-voltage power source for control circuits in industrial machinery and automation panels. The unit is rated for 63VA and offers flexible primary voltage inputs of 230V or 400V, with a selectable secondary output of 24V or 48V. This assembly comes pre-mounted on a sturdy bracket with DIN rail and includes Legrand circuit protection components, making it a ready-to-install solution.

Specifications

• Manufacturer: Legrand
• Part Number: 426 51
• Power Rating: 63 VA
• Primary Voltage: 230/400 V AC (+/- 15V)
• Secondary Voltage: 24/48 V AC
• Frequency: 50/60 Hz
• Type: Single-phase, isolating
• Insulation Class: F

Label Info

• Brand: Legrand
• Model: TFCE
• PN: 063
• Protection: IP 2X

Application

Ideal for providing power to control circuits, relays, contactors, PLCs, and other automation components requiring a stable 24V or 48V AC supply. Its safety isolation feature is crucial for panels with frequent human interaction.

Country of Origin

This product is made in France.

CO2 Impact

Choosing this refurbished transformer over a new one saves an estimated 27.0 kg of CO2, which is comparable to the emissions from driving a standard car for 135 kilometers.

Availability

This unit is an obsolete model but is available from our stock. The modern equivalent is the Legrand 442 11. Order now from spareparts2day for expert support and fast delivery.

FAQ

How should the primary windings be connected for 230V versus 400V operation?

For 230V operation, the primary input should be connected across the 230V terminals as indicated on the device diagram. For 400V operation, the input should be connected across the 400V terminals. Always ensure the jumper or link configuration matches the selected input voltage to prevent damage.

What is the purpose of using a control and safety transformer like the Legrand 426 51?

This transformer provides galvanic isolation between the main power circuit and the control circuit. This is critical for safety, as it creates a separated extra-low voltage (SELV) system for operator controls. It also steps down the voltage to a standard control level (24V or 48V), protecting sensitive components.

Can this obsolete transformer be directly replaced by a modern equivalent like the Legrand 442 11?

Yes, the Legrand 442 11 is the recommended modern equivalent with the same primary/secondary voltage and power ratings. However, you should always check the physical dimensions (footprint and height) to ensure it fits in the existing panel space without modification.

Last Update: Friday, March 13, 2026

spareparts2day is not an authorized distributor, reseller or representative of the products featured on this website. All product names, trademarks, brands and logos used on this site are the property of their respective owners.