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Siemens 4EP3910-7AS20 — Line/Load Reactors

Siemens 4EP3910-7AS20 Mains Choke, 50A 3-Phase 500V

MPN4EP3910-7AS20

Siemens 4EP3910-7AS20 Netzdrossel mains choke, 3-phase AC, 50A max / 45A rated, 0.42mH, 500V, IP00, screw terminals.

Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

4EP3910-7AS20 specifications
ParameterValue
Type of voltageAC
Type of electrical connection for main current circuitscrew-type terminals
Operating voltage rated value500, 500V
Relative inductive drop in voltage on the measurement level current, voltage and frequency3%
Operating frequency rated value60 ... 50Hz
Phase number3
Ambient temperature rated value40°C
Depth0.123m
Width0.219m
Height0.179m
Thermal class acc. to IEC 60085B
Rated value45A
Protection class IPIP00
Inductivity rated value0.00042H

Product details

The Siemens 4EP3910-7AS20 is a Netzdrossel — a three-phase mains choke (line reactor) rated for 50 A maximum continuous current, 45 A rated, with 0.42 mH inductance per phase.

The screw-type terminals on the main circuit accept lugs or ring terminals; plan for panel space measuring 0.219 m wide by 0.179 m tall by 0.123 m deep. Thermal class B (130 °C) insulation per IEC 60085 means the winding can sustain continuous operation at 40 °C ambient without exceeding its rated temperature rise.

Frequently asked questions

Where can I buy 4EP3910-7AS20 and get a price?

This part is sourced to order against an RFQ through independent distribution channels. Submit a request for quote; availability and current pricing are confirmed at quote time.

What are the key ratings for 4EP3910-7AS20?

Maximum continuous current is 50 A, rated current is 45 A, inductance is 0.42 mH, operating voltage is 500 V AC, and the relative inductive voltage drop is 3 % at rated current. It is a 3-phase AC choke for 50/60 Hz lines.

What are the physical dimensions of 4EP3910-7AS20?

Width is 0.219 m, height is 0.179 m, depth is 0.123 m. The protection class is IP00, so it requires panel or cabinet mounting.

MPN
4EP3910-7AS20