Skip to main content
Siemens 4EU3951-4UB00-0A — Line/Load Reactors

Siemens 4EU3951-4UB00-0A Mains Choke, 560A, 690V, 50Hz

MPN4EU3951-4UB00-0A

Siemens SENTRON 4EU3951-4UB00-0A mains choke for frequency converters, 3-phase, 560 A max / 504 A rated, 690 V AC, 50 Hz, 4 % voltage drop, IP00, flat-type terminals.

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

4EU3951-4UB00-0A — Inductance & Impedance
ParameterValue
Rated inductance0.00009H
Relative inductive voltage drop4%
4EU3951-4UB00-0A — Identification
ParameterValue
Product designationNetzdrossel f. FU
4EU3951-4UB00-0A — Electrical
ParameterValue
Rated operating voltage690V
Number of phases3
Voltage typeAC
Rated operating frequency50Hz
4EU3951-4UB00-0A — Losses & Thermal
ParameterValue
Power loss, coil (W)540W
Power loss, iron core (W)200W
Rated ambient temperature40°C
4EU3951-4UB00-0A — Approvals
ParameterValue
Thermal class (IEC 60085)H
4EU3951-4UB00-0A — Mechanical
ParameterValue
Main-circuit connection typeflat connector
IP protection ratingIP00
Height0.385m
Width0.41m
Depth0.229m

Product details

It carries a maximum current of 560 A and a rated continuous current of 504 A at 690 V AC, 50 Hz — the rated figure is the one that governs thermal sizing in a continuous-duty application; the 560 A maximum covers short-duration overloads the drive might draw during acceleration. That impedance limits harmonic currents and reduces the peak-to-peak ripple on the DC bus of the connected drive. A 4 % choke is a common choice for general-purpose drive applications where harmonic mitigation is needed without excessive voltage drop under load. Power loss splits between the coil (540 W) and the iron core (200 W), totaling 740 W at rated conditions. Thermal class H insulation (180 °C rated) gives headroom for hot spots and overload conditions.

This choke is sized for a 690 V AC three-phase line feeding a frequency converter. Physical dimensions are 0.41 m wide by 0.385 m tall by 0.229 m deep, so it needs a panel floor or mounting plate with that footprint plus clearance for ventilation and busbar routing. The IP00 protection class means the choke is open-frame; it must be installed inside a cabinet that provides the required ingress protection for the overall assembly. No washdown or outdoor exposure is permitted without an additional enclosure.

This is not a part you will find on a distributor shelf in high volume.

Frequently asked questions

What are the key ratings for 4EU3951-4UB00-0A?

It is a 3-phase mains choke rated 504 A continuous (560 A max) at 690 V AC, 50 Hz, with a 4 % voltage drop. Power loss is 740 W total at rated conditions. Thermal class H insulation. IP00 open-frame construction.

What compliance documentation does this choke carry?

It is UL and CSA recognized per EN 61558-2-20, the standard for reactors and chokes. The IP00 rating and thermal class H per IEC 60085 are also documented.

Where can I buy 4EU3951-4UB00-0A?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

MPN
4EU3951-4UB00-0A