SIEMENS 4EP4003-0DS00

Siemens Line Reactor 90A, 0.224mH – 4EP4003-0DS00

Description

The Siemens 4EP4003-0DS00 is a high-performance three-phase commutating reactor from the SIDAC-D series. It is engineered to limit current surges and reduce harmonics in 400V/50Hz power systems, commonly used with frequency converters and other power electronics. With a nominal current of 90A and an inductance of 0.224mH, it provides essential protection and improves the power quality of your industrial applications. Order now from spareparts2day for expert support and fast delivery.

Specifications

• Manufacturer: Siemens
• Type Number: 4EP4003-0DS00
• Product Family: SIDAC-D
• Nominal Current (ILn): 90A
• Maximum Current (Imax): 125A
• Inductance (Lx): 0.224 mH
• Rated Voltage: 400V
• Frequency: 50Hz
• Phases: 3
• Weight: 10.4 kg

Label Info

• Associated Product: Siemens 3VF3211-1BU41-0AA0 / 120A
• Ambient Temperature (ta): 40 deg C
• Resistance (R): 3x 1.39mOhm +/-10%
• Standards: EN 61558, cRUus, CE

Application

This line reactor is ideal for use in drive technology, power supplies, and with thyristor-based converters to smooth current and protect sensitive electronic components from line disturbances.

Country of Origin

Made in Germany.

CO2 Impact

Choosing this pre-owned Siemens line reactor prevents the emission of an estimated 416 kg of CO2 compared to manufacturing a new one. This saving is equivalent to driving a car for over 2000 kilometers.

Availability

This item is in stock and ready for immediate dispatch.

FAQ

Question?

What is the primary application for this 4EP4003-0DS00 reactor?

Answer:

This is a commutating or line reactor, primarily used with thyristor-based converters or frequency drives to limit the rate of current rise (di/dt), reduce line harmonics, and protect the power electronics from voltage spikes.

Question?

The label mentions “3VF3211-1BU41-0AA0”. What is the significance of this part number?

Answer:

This part number corresponds to a Siemens SENTRON 3VF3 series circuit breaker. The reactor is likely designed and rated to work in conjunction with this specific 120A circuit breaker for a complete and coordinated protection scheme.

Question?

Is this reactor suitable for a 60Hz system?

Answer:

The label explicitly states 400V 50Hz. While it may function on a 60Hz system, its inductive reactance will be 20% higher (X_L = 2*pi*f*L). This would need to be carefully evaluated for the specific application to ensure it does not negatively impact system performance or voltage drop.

Friday, March 13, 2026

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