SIEMENS 4EM4807-1CB00

Siemens 4EM4807-1CB00 Commutation Choke

Description

The Siemens 4EM4807-1CB00 is a high-quality commutation choke, also known as a line reactor, from the SIDAC-D series. It is engineered to protect power electronics by limiting the rate of current rise (di/dt) and smoothing current waveforms. This choke is essential for applications involving thyristor controllers and motor starters, enhancing system stability and component lifespan.

Specifications

• Manufacturer: Siemens
• Part Number: 4EM4807-1CB00
• Product Type: Commutation Choke
• Inductance (L): 6.05 mH
• Rated Current (In): 7.2 A
• Max. Thermal Current (Ith): 8.0 A
• Rated Voltage: 400V, 50Hz
• Max. System Voltage (U max): 690V
• Insulation Class: B (ta 40 deg C)
• Weight: 1.1 kg

Label Info

• Associated Component: Siemens 3RV1011-1KA10 / 10A
• Resistance (R): 117mOhm +-10%
• Standards: EN 61558, cURus

Application

This choke is specifically designed for use in industrial control cabinets with motor starters and variable frequency drives. It is particularly suitable for maintaining or repairing existing systems that utilize the Siemens SIRIUS 3RV1 motor protection series.

Country of Origin

Made in Germany.

CO2 Impact

Reusing this 1.1kg line reactor avoids the production of a new one, saving an estimated 2.2 kg of CO2. This saving is primarily due to averted steel and copper manufacturing emissions.

Availability

This is an obsolete item, available from our stock. Ideal for spare parts and maintenance. Order now from spareparts2day for expert support and fast delivery.

FAQ

Question?

What is the primary function of the 4EM4807-1CB00 choke?

Answer:

Its main function is as a commutation choke to limit the rate of current rise (di/dt) in power electronic circuits. This protects components like thyristors from damage and helps to reduce harmonic distortion on the power line.

Question?

Can this choke be used with a 60Hz supply?

Answer:

The label specifies operation at 400V 50Hz. Using it on a 60Hz supply will increase its impedance (Z = 2*pi*f*L), altering its performance characteristics. It is not guaranteed to perform to specification and should be used as rated for optimal results.

Question?

What does the associated part number 3RV1011-1KA10 signify?

Answer:

This indicates the choke is designed for optimal performance with a Siemens SIRIUS 3RV1011-1KA10 motor protection circuit breaker. This breaker has a setting range up to 10A, which is compatible with the choke’s 7.2A nominal current rating.

Last Update: Friday, March 13, 2026

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